CODES

ADOPTS WITH AMENDMENTS:

International Residential Code 2015 (IRC 2015)

Part I ‒ Administrative

Chapter 1 Scope and Administration

Chapter 1 General Requirements

Part II ‒ Definitions

Chapter 2 Definitions

Part III ‒ Building Planning and Construction

Chapter 3 Building Planning

Chapter 4 Foundations

Chapter 5 Floors

Chapter 6 Wall Construction

Chapter 7 Wall Covering

Chapter 8 Roof-Ceiling Construction

Chapter 9 Roof Assemblies

Chapter 10 Chimneys and Fireplaces

Part IV ‒ Energy Conservation

Chapter 11 [RE] Energy Efficiency

Part V ‒ Mechanical

Chapter 12 Mechanical Administration

Chapter 13 General Mechanical System Requirements

Chapter 14 Heating and Cooling Equipment and Appliances

Chapter 15 Exhaust Systems

Chapter 16 Duct Systems

Chapter 17 Combustion Air

Chapter 18 Chimneys and Vents

Chapter 19 Special Appliances, Equipment and Systems

Chapter 20 Boilers and Water Heaters

Chapter 21 Hydronic Piping

Chapter 22 Special Piping and Storage Systems

Chapter 23 Solar Thermal Energy Systems

Part VI ‒ Fuel Gas

Chapter 24 Fuel Gas

Part VII ‒ Plumbing

Chapter 25 Plumbing Administration

Chapter 26 General Plumbing Requirements

Chapter 27 Plumbing Fixtures

Chapter 28 Water Heaters

Chapter 29 Water Supply and Distribution

Chapter 30 Sanitary Drainage

Chapter 31 Vents

Chapter 32 Traps

Chapter 33 Storm Drainage

Part VIII ‒ Electrical

Chapter 34 General Requirements

Chapter 35 Electrical Definitions

Chapter 36 Services

Chapter 37 Branch Circuit and Feeder Requirements

Chapter 38 Wiring Methods

Chapter 39 Power and Lighting Distribution

Chapter 40 Devices and Luminaires

Chapter 41 Appliance Installation

Chapter 42 Swimming Pools

Chapter 43 Class 2 Remote-Control, Signaling and Power-Limited Circuits

Part IX ‒ Referenced Standards

Chapter 44 Referenced Standards

Appendix A Sizing and Capacities of Gas Piping

Appendix B Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods, Category I Appliances, and Appliances Listed for Use With Type B Vents

Appendix C Exit Terminals of Mechanical Draft and Direct-Vent Venting Systems

Appendix D Recommended Procedure for Safety Inspection of an Existing Appliance Installation

Appendix E Manufactured Housing Used as Dwellings

Appendix F Radon Control Methods

Appendix G Piping Standards for Various Applications

Appendix H Patio Covers

Appendix I Private Sewage Disposal

Appendix J Existing Buildings and Structures

Appendix K Sound Transmission

Appendix L Permit Fees

Appendix M HOME DAY CARE—R-3 OCCUPANCY

Appendix N Venting Methods

Appendix O Automatic Vehicular Gates

Appendix P Sizing of Water Piping System

Appendix Q Reserved

Appendix R Light Straw-Clay Construction

Appendix S Strawbale Construction

Appendix T Recommended Procedure for Worst-Case Testing of Atmospheric Venting Systems Under N1102.4 or N1105 Conditions ≤ 5ACH50

Appendix U SOLAR-READY PROVISIONS—DETACHED ONE- AND TWO-FAMILY DWELLINGS, MULTIPLE SINGLE- FAMILY DWELLINGS (TOWNHOUSES)

(The provisions contained in this appendix are not mandatory unless specifically referenced in the adopting ordinance.)

AJ1 Administration

AMENDMENT
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AJ101.1 General Scope

AMENDMENT
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The purpose of these provisions is to encourage the continued use or reuse of legally existing buildings and structures. These provisions are intended to permit work in existing buildings that is consistent with the purpose of this code. Compliance with these provisions shall be deemed to meet the requirements of this code. The provisions of this appendix shall apply to the repair, alteration, change of occupancy, addition and relocation of existing buildings.

AJ101.1.1 Buildings Not Previously Occupied

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
A building or portion of a building that has not been previously occupied or used for its intended purpose shall comply with the provisions of this code for new construction.

AJ101.1.2 Compliance With Other Codes

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs, alterations, change of occupancy, existing buildings to which additions are made, historic buildings and relocated buildings complying with the provisions of the 2015 IRC, IBC, IPC, IMC, IFGC, and IFC, as applicable, shall be considered in compliance with the provisions of this appendix.

AJ101.2 Classification of Work Intent

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
For purposes of this appendix, work in existing buildings shall be classified into the categories of repair, renovation, alteration and reconstruction. Specific requirements are established for each category of work in these provisions. The purpose of these provisions is to encourage the continued use or reuse of legally existing buildings and structures. These provisions are intended to permit work in existing buildings that is consistent with the purpose of the 2015 IRC. Compliance with these provisions shall be deemed to meet the requirements of the 2015 IRC

AJ101.3 Multiple Categories of Work

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Work of more than one category shall be part of a single work project. Related work permitted within a 12-month period shall be considered to be a single work project. Where a project includes one category of work in one building area and another category of work in a separate and unrelated area of the building, each project area shall comply with the requirements of the respective category of work. Where a project with more than one category of work is performed in the same area or in related areas of the building, the project shall comply with the requirements of the more stringent category of work.

AJ102.1 General Existing Buildings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Regardless of the category of work being performed, the work shall not cause the structure to become unsafe or adversely affect the performance of the building; shall not cause an existing mechanical or plumbing system to become unsafe, hazardous, insanitary or overloaded; and unless expressly permitted by these provisions, shall not make the building any less compliant with this code or to any previously approved alternative arrangements than it was before the work was undertaken. The legal occupancy of any building existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the 2015 IFC or the 2015 IPMC.

AJ102.1.1 Additions, Alterations and Repairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions, alterations or repairs to any structure shall conform to that required by this code without requiring the existing structure to comply with all the requirements of this code, unless otherwise stated. Additions, alterations or repairs shall not cause an existing structure to become unsafe or adversely affect the performance of the building.

AJ102.2 Requirements by Category of Work Existing Installations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs shall conform to the requirements of Section AJ301. Renovations shall conform to the requirements of Section AJ401. Alterations shall conform to the requirements of Section AJ501 and the requirements for renovations. Reconstructions shall conform to the requirements of Section AJ601 and the requirements for alterations and renovations. Provisions in this code shall not require the removal, alteration or abandonment of, or prevent the continued use and maintenance of, an existing building envelope, mechanical, service water-heating, electrical distribution or illumination system lawfully in existence at the time of the adoption of this code.

AJ102.3 Smoke Detectors Nonconforming Features

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Regardless of the category of work, smoke detectors shall be provided where required by Section R314.2.2. Nothing in this appendix shall be construed to permit the continuation of existing building features which were installed in conflict with any codes or laws in effect at the time of construction or installation. Additions or alterations shall not be made to an existing building or structure which will cause the existing building or structure to be in violation with any of the provisions of this code.

AJ102.4 Replacement Windows Correction of Violations of Other Codes.

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Regardless of the category of work, where an existing window, including the sash and glazed portion, or safety glazing is replaced, the replacement window or safety glazing shall comply with the requirements of Sections AJ102.4.1 through AJ102.4.3, as applicable. Repairs or alterations mandated by any property, housing or fire safety maintenance code or mandated by any licensing rule or ordinance adopted pursuant to law shall conform only to the requirements of that code, rule or ordinance and shall not be required to conform to this code unless the code requiring such repair or alteration so provides.

AJ102.4.1 Energy Efficiency

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Replacement windows shall comply with the requirements of Chapter 11.

AJ102.4.2 Safety Glazing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Replacement glazing in hazardous locations shall comply with the safety glazing requirements of Section R308.

AJ102.4.3 Emergency Escape and Rescue Openings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where windows are required to provide emergency escape and rescue openings, replacement windows shall be exempt from the maximum sill height requirements of Section R310.2.2 and the requirements of Sections R310.2.1 and R310.2.3 provided that the replacement window meets the following conditions:
  1. The replacement window is the manufacturer's largest standard size window that will fit within the existing frame or existing rough opening. The replacement window shall be permitted to be of the same operating style as the existing window or a style that provides for an equal or greater window opening area than the existing window.
  2. The replacement window is not part of a change of occupancy.
  3. Window opening control devices complying with ASTM F 2090 shall be permitted for use on windows required to provide emergency escape and rescue openings.

AJ102.4.4 Window Control Devices

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where window fall prevention devices complying with ASTM F 2090 are not provided, window opening control devices complying with ASTM F 2090 shall be installed where an existing window is replaced and where all of the following apply to the replacement window:

1. The window is operable.

2. The window replacement includes replacement of the sash and the frame.

3. The top of the sill of the window opening is at a height less than 24 inches (610 mm) above the finished floor.

4. The window will permit openings that will allow passage of a 4-inch-diameter (102 mm) sphere where the window is in its largest opened position.

5. The vertical distance from the top of the sill of the window opening to the finished grade or other surface below, on the exterior of the building, is greater than 72 inches (1829 mm).

The window opening control device, after operation to release the control device allowing the window to fully open, shall not reduce the minimum net clear opening area of the window unit.

AJ102.5 Flood Hazard Areas Home Occupations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Work performed in existing buildings located in a flood hazard area as established by Table R301.2(1) shall be subject to the provisions of Section R105.3.1.1. It shall be prohibited to conduct a home occupation in a dwelling unit except as provided for in Section AJ102.5.1. A home occupation shall be conducted wholly within the primary structure on the premises. No provision of this section shall be construed to repeal, modify or constitute an alternative to any lawful zoning regulation which is more restrictive than this section.

AJ102.5.1 Conditions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
  1. The home occupation shall meet all requirements for habitable space and shall not exceed 15 percent of the floor area of the primary structure.
  2. No more than one person not residing in the dwelling unit may be employed in the home occupation.
  3. Inventory and supplies shall not occupy more than 50 percent of the area permitted to be used as a home occupation.
  4. The home occupation shall not involve any operation considered to be hazardous.

AJ102.6 Equivalent Alternatives Lead -based Paint

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Work performed in accordance with the International Existing Building Code shall be deemed to comply with the provisions of this appendix. These provisions are not intended to prevent the use of any alternative material, alternative design or alternative method of construction not specifically prescribed herein, provided that any alternative has been deemed to be equivalent and its use authorized by the building official. In addition to requirements of this code, 40 CFR 745 (titled “Lead-based Paint Poisoning Prevention in Certain Residential Structures”), a regulation issued and enforced by the Federal Environmental Protection Agency, applies to certain activities in buildings that may contain lead-based paint, including renovations performed for compensation in “target housing” and “child-occupied facilities,” “abatement” of lead-based paint hazards and other “lead-based paint activities” (as those terms are defined in 40 CFR Part 745).

AJ102.7 Other Alternatives Evacuation notices

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where compliance with these provisions or with this code as required by these provisions is technically infeasible or would impose disproportionate costs because of construction or dimensional difficulties, the building official shall have the authority to accept alternatives. These alternatives include materials, design features and operational features. In addition to but not in limitation of any other requirement of this Section, all one-family dwellings converted for use as a bed and breakfast dwelling and all existing bed and breakfast dwellings undergoing an alteration or addition to create an additional guest room or rooms shall have a fire-safety notice affixed to the occupied side of the entrance door of each converted, altered, or new guest for transient use indicating:
  1. Location of nearest exits and fire alarms;
  2. Procedures to be followed when a fire or smoke detector gives warning; and
  3. Procedures to be followed in the event of fire or smoke development.

AJ102.8 More Restrictive Requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings or systems in compliance with the requirements of this code for new construction shall not be required to comply with any more restrictive requirement of these provisions.

AJ102.9 Features Exceeding Code Requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Elements, components and systems of existing buildings with features that exceed the requirements of this code for new construction, and are not otherwise required as part of approved alternative arrangements or deemed by the building official to be required to balance other building elements not complying with this code for new construction, shall not be prevented by these provisions from being modified as long as they remain in compliance with the applicable requirements for new construction.

Section AJ103 Preliminary Meeting Applicability

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ103.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
If a building permit is required at the request of the prospective permit applicant, the building official or his or her designee shall meet with the prospective applicant to discuss plans for any proposed work under these provisions prior to the application for the permit. The purpose of this preliminary meeting is for the building official to gain an understanding of the prospective applicant's intentions for the proposed work, and to determine, together with the prospective applicant, the specific applicability of these provisions. Where in any specific case, different sections of this appendix specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall be applicable.

AJ103.2 Other Laws

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The provisions of this appendix shall not be deemed to nullify any provisions of local, state or federal law.

AJ103.3 Referenced Codes and Standards

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The codes and standards referenced in this appendix shall be considered part of the requirements of this appendix to the prescribed extent of each such reference. Where differences occur between provisions of this appendix and referenced codes and standards, the provisions of this appendix shall apply.

AJ103.4 Partial invalidity

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
In the event that any part or provision of this appendix is held to be illegal or void, this shall not have the effect of making void or illegal any of the other parts or provisions.

Section AJ104 Evaluation of an Existing Building Energy Efficiency

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ104.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The building official shall have the authority to require an existing building to be investigated and evaluated by a registered design professional in the case of proposed reconstruction of any portion of a building. The evaluation shall determine the existence of any potential nonconformities to these provisions, and shall provide a basis for determining the impact of the proposed changes on the performance of the building. The evaluation shall use the following sources of information, as applicable:

1. Available documentation of the existing building.

1.1. Field surveys.

1.2. Tests (nondestructive and destructive).

1.3. Laboratory analysis.

Exception: Detached one- or two-family dwellings that are not irregular buildings under Section R301.2.2.2.5 and are not undergoing an extensive reconstruction shall not be required to be evaluated.
Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall govern. The provisions of Article 11 of the New York State Energy Law shall apply as to limit any applicability as found therein.

AJ104.1.1 Additions, Alterations, or Renovations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions, alterations, or renovations to an existing building, building system or portion thereof shall conform to the provisions of Section N1107 of this code as they relate to new construction without requiring the unaltered portion(s) of the existing building or building system to comply with this chapter. An addition shall be deemed to comply with this chapter if the addition alone complies or if the existing building and addition comply with this chapter as a single building. Additions, alterations, or renovations shall not create an unsafe or hazardous condition or overload existing building systems.
Exception: The following need not comply provided the energy use of the building is not increased:
  1. Storm windows installed over existing fenestration.
  2. Glass only replacements in an existing sash and frame provided the U-factor and the solar heat gain coefficient (SHGC) will be equal to or lower than before the glass replacement.
  3. Alterations, renovations or repairs to roof/ceiling, wall or floor cavities which are insulated to full depth with insulation having a minimal nominal value of R-3.0/inch.
  4. Alterations, renovations or repairs to walls and floors, where the existing structure is without framing cavities and no new framing cavities are created.
  5. Reroofing where neither the sheathing nor the insulation is exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
  6. Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates a conditioned space from the exterior shall not be removed.
  7. An alteration that replaces less than 50 percent of the luminaires in a space, provided that such alteration does not increase the installed interior lighting power.
  8. An alteration that replaces only the bulb and ballast within the existing luminaires in a space provided that such alteration does not increase the installed interior lighting power.

AJ104.1.2 Change in Occupancy or Use

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy shall comply with Section N1111 of this code.

AJ104.1.3 Change in Space Conditioning

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Any non-conditioned space that is altered to become conditioned space shall comply with the provisions of this chapter for an addition

Section AJ105 Permit Preliminary Meeting

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ105.1 Identification of Work Area Preliminary Meeting

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The work area shall be clearly identified on the permits issued under these provisions. The code enforcement official is authorized to require that the prospective applicant meet to discuss plans for the proposed work or change of occupancy under these provisions prior to the issuance of a permit in order to establish the specific applicability of the provisions of this appendix.

Section AJ106 Evaluation of an Existing Building

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ106.1 Building Evaluation

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The code enforcement official is authorized to require an existing building to be investigated and evaluated by a registered design professional based upon the circumstances agreed upon at the preliminary meeting to determine the existence of any potential nonconformance with the provisions of this code. The building evaluation shall include, but not be limited to, structural, mechanical, plumbing and electrical systems. The evaluation shall be limited to those areas of the existing dwelling that are directly affected by the type of work under consideration. The building evaluation shall be certified by the design professional.

The evaluation shall utilize the following sources of information, as applicable:
  1. Available documentation of the existing building.
    1. Field surveys.
    2. Tests (nondestructive and destructive).
    3. Laboratory analysis.

AJ2 Definitions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ201 Definitions General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ201.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
For purposes of this appendix, the terms used are defined as follows.

ALTERATION. The reconfiguration of any space; the addition or elimination of any door or window; the reconfiguration or extension of any system; or the installation of any additional equipment.

CATEGORIES OF WORK. The nature and extent of construction work undertaken in an existing building. The categories of work covered in this appendix, listed in increasing order of stringency of requirements, are repair, renovation, alteration and reconstruction.

DANGEROUS. Where the stresses in any member; the condition of the building, or any of its components or elements or attachments; or other condition that results in an overload exceeding 150 percent of the stress allowed for the member or material in this code.

EQUIPMENT OR FIXTURE. Any plumbing, heating, electrical, ventilating, air-conditioning, refrigerating and fire protection equipment; and elevators, dumb waiters, boilers, pressure vessels, and other mechanical facilities or installations that are related to building services.

LOAD-BEARING ELEMENT. Any column, girder, beam, joist, truss, rafter, wall, floor or roof sheathing that supports any vertical load in addition to its own weight, or any lateral load.

MATERIALS AND METHODS REQUIREMENTS. Those requirements in this code that specify material standards; details of installation and connection; joints; penetrations; and continuity of any element, component or system in the building. The required quantity, fire resistance, flame spread, acoustic or thermal performance, or other performance attribute is specifically excluded from materials and methods requirements.

RECONSTRUCTION. The reconfiguration of a space that affects an exit, a renovation or alteration where the work area is not permitted to be occupied because existing means-of-egress and fire protection systems, or their equivalent, are not in place or continuously maintained; or there are extensive alterations as defined in Section AJ501.3.

REHABILITATION. Any repair, renovation, alteration or reconstruction work undertaken in an existing building.

RENOVATION. The change, strengthening or addition of load-bearing elements; or the refinishing, replacement, bracing, strengthening, upgrading or extensive repair of existing materials, elements, components, equipment or fixtures. Renovation does not involve reconfiguration of spaces. Interior and exterior painting are not considered refinishing for purposes of this definition, and are not renovation.

REPAIR. The patching, restoration or minor replacement of materials, elements, components, equipment or fixtures for the purposes of maintaining those materials, elements, components, equipment or fixtures in good or sound condition.

WORK AREA. That portion of a building affected by any renovation, alteration or reconstruction work as initially intended by the owner and indicated as such in the permit. Work area excludes other portions of the building where incidental work entailed by the intended work must be performed, and portions of the building where work not initially intended by the owner is specifically required by these provisions for a renovation, alteration or reconstruction.

Section AJ202 General Definitions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
ADDITION. An extension or increase in floor area, number of stories, or height of a building or structure.

ALTERATION. Any construction or renovation to an existing structure other than repair or addition. Alterations are classified as Level 1 and Level 2.

BED AND BREAKFAST DWELLING. An owner-occupied residence resulting from a conversion of a one-family dwelling, used for providing overnight accommodations and a morning meal to not more than 10 transient lodgers, and containing not more than five bedrooms for such lodgers.

CHANGE OF OCCUPANCY. A change in the occupancy or use of a building, such as a change from a one-family dwelling to a two-family dwelling, or from an occupancy regulated by the 2015 IBC to a detached one-or two-family dwelling or multiple single-family dwellings (townhouses) regulated by this code.

CONVERSION. A change of occupancy or use of a building from a one-family dwelling to a bed and breakfast dwelling.

DANGEROUS. Any building or structure or any individual member with any of the structural conditions or defects described below shall be deemed dangerous:
  1. The stress in a member or portion thereof due to all factored dead and live loads is more than one and one third the nominal strength allowed in this code for new buildings of similar structure, purpose or location.
  2. Any portion, member or appurtenance thereof likely to fail, or to become detached or dislodged, or to collapse and thereby injure persons.
  3. Any portion of a building, or any member, appurtenance or ornamentation on the exterior thereof is not of sufficient strength or stability, or is not anchored, attached or fastened in place so as to be capable of resisting a wind pressure of two thirds of that specified in this code for new buildings of similar structure, purpose or location without exceeding the nominal strength permitted in this code for such buildings.
  4. The building, or any portion thereof, is likely to collapse partially or completely because of dilapidation, deterioration or decay; construction in violation of the Uniform Code; the removal, movement or instability of any portion of the ground necessary for the purpose of supporting such building; the deterioration, decay or inadequacy of its foundation; damage due to fire, earthquake, wind or flood; or any other similar cause.
  5. The exterior walls or other vertical structural members list, lean or buckle to such an extent that a plumb line passing through the center of gravity does not fall inside the middle one third of the base.

EQUIPMENT OR FIXTURE. Any plumbing, heating, electrical, ventilating, air conditioning, refrigerating and fire protection equipment, and elevators, dumb waiters, boilers, pressure vessels, and other mechanical facilities or installations that are related to building services.

EXISTING BUILDING. A building or structure that has been issued a certificate of occupancy or has been legally occupied.

FLOOD HAZARD AREA. The greater of the following two areas:
  1. The area within a flood plain subject to a 1-percent or greater chance of flooding in any year.
  2. The area designated as a flood hazard area on a community's flood hazard map, or otherwise legally designated.

HISTORIC BUILDING. Any building or structure that is listed in the State or National Register of Historic Places; designated as a historic property under local or state designation law or survey; certified as a contributing resource within a National Register listed or locally designated historic district; or with an opinion or certification that the property is eligible to be listed on the National or State Registers of Historic Places either individually or as a contributing building to a historic district by the State Historic Preservation Officer or the Keeper of the National Register of Historic Places.

HOME OCCUPATION. The use of a portion of a dwelling unit for nonresidential purposes by a resident thereof.

LOAD-BEARING ELEMENT. Any column, girder, beam, joist, truss, rafter, wall, floor or roof sheathing that supports any vertical load in addition to its own weight, or any lateral load.

MATERIALS AND METHODS REQUIREMENTS. Those requirements in this code that specify material standards; details of installation and connection; joints; penetrations; and continuity of any element, component or system in the building. The required quantity, fire resistance, flame spread, acoustic or thermal performance, or other performance attribute is specifically excluded from materials and methods requirements.

REHABILITATION. Any work, as described by the categories of work defined herein, undertaken in an existing building.

RELOCATION. Relocated buildings include any building or structure which is relocated from its existing foundation to a new foundation.

REPAIR. The restoration to good or sound condition of any part of an existing building for the purpose of its maintenance.

REPLACEMENT. The reconstruction of a building on an existing foundation or support system.

SUBSTANTIAL DAMAGE. For the purpose of determining compliance with the flood provisions of this code, damage of any origin sustained by a structure whereby the cost of restoring the structure to its before-damaged condition would equal or exceed 50 percent of the market value of the structure before the damage occurred.

SUBSTANTIAL IMPROVEMENT. For the purpose of determining compliance with the flood provisions of this code, any repair, alteration, addition or improvement of a building or structure, the cost of which equals or exceeds 50 percent of the market value of the structure before the improvement or repair is started. If the structure has sustained substantial damage, any repairs are considered substantial improvement regardless of the actual repair work performed. The term does not, however, include either:
  1. Any project for improvement of a building required to correct existing health, sanitary or safety code violations identified by the code official and that is the minimum necessary to assure safe living conditions, or
  2. Any alteration of a historic structure provided that the alteration will not preclude the structure's continued designation as a historic structure.

SUBSTANTIAL STRUCTURAL DAMAGE. A condition where:
  1. In any story, the vertical elements of the lateral-force-resisting system, in any direction and taken as a whole, have suffered damage such that the lateral load-carrying capacity has been reduced by more than 20 percent from its pre-damaged condition, or
  2. The vertical load-carrying components supporting more than 30 percent of the structure's floor or roof area have suffered a reduction in vertical load-carrying capacity to below 75 percent of the required strength levels of this code.

UNSAFE BUILDINGS OR EQUIPMENT. Buildings or existing equipment that is insanitary or deficient because of inadequate means of egress facilities, inadequate light and ventilation, or that constitutes a fire hazard, or that is otherwise dangerous to human life or the public welfare or that involves illegal or improper occupancy or inadequate maintenance, shall be deemed an unsafe condition.

WORK AREA. That portion or portions of a building consisting of all reconfigured spaces as indicated on the construction documents. Work area excludes other portions of the building where incidental work entailed by the intended work must be performed and portions of the building where work not initially intended by the owner is specifically required by this appendix.

AJ3 Classification of Work

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ301 Repairs General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ301.1
Materials
Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Except as otherwise required herein, work shall be done using like materials or materials permitted by this code for new construction. The work performed on an existing building shall be classified in accordance with this section.

AJ301.1.1 Hazardous Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Hazardous materials no longer permitted, such as asbestos and lead-based paint, shall not be used.

AJ301.1.2 Plumbing Materials and Supplies

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The following plumbing materials and supplies shall not be used:

1. All-purpose solvent cement, unless listed for the specific application.

2. Flexible traps and tailpieces, unless listed for the specific application.

3. Solder having more than 0.2 percent lead in the repair of potable water systems.

AJ301.2 Water Closets Work Area

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where any water closet is replaced with a newly manufactured water closet, the replacement water closet shall comply with the requirements of Section P2903.2. The work area, as defined in Section AJ202, shall be identified on the construction documents.

AJ301.3 Electrical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repair or replacement of existing electrical wiring and equipment undergoing repair with like material shall be permitted.

Exceptions:

1. Replacement of electrical receptacles shall comply with the requirements of Chapters 34 through 43.

2. Plug fuses of the Edison-base type shall be used for replacements only where there is not evidence of overfusing or tampering in accordance with the applicable requirements of Chapters 34 through 43.

3. For replacement of nongrounding-type receptacles with grounding-type receptacles and for branch circuits that do not have an equipment grounding conductor in the branch circuitry, the grounding conductor of a grounding-type receptacle outlet shall be permitted to be grounded to any accessible point on the grounding electrode system, or to any accessible point on the grounding electrode conductor, as allowed and described in Chapters 34 through 43.

Section AJ302 Repairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ302.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs, as defined in Section AJ202, include the patching or restoration of materials, elements, equipment, or fixtures for the purpose of maintaining such materials, elements, equipment or fixtures in good or sound condition.

AJ302.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs shall comply with the provisions of Section AJ4.

Section AJ303 Alterations - Level 1

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ303.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Level 1 alterations include the removal and replacement or the covering of existing materials, elements, equipment or fixtures using new materials, elements, equipment or fixtures that serve the same purpose, without reconfiguring the space.

AJ303.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Level 1 alterations shall comply with the provisions of Section AJ5.

Section AJ304 Alterations - Level 2

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ304.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Level 2 alterations include the reconfiguration of space, the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment.

AJ304.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Level 2 alterations shall comply with the provisions of Section AJ5 for Level 1 alterations as well as the provisions of Section AJ6.

Exception: Work areas in which the alteration work is exclusively plumbing, mechanical or electrical shall not be included in the computation of total area of all work areas.

Section AJ305 Change of Occupancy

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ305.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Change of occupancy provisions apply where the activity is classified as a change of occupancy as defined in Section AJ202.

AJ305.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Changes of occupancy shall comply with the provisions of Section AJ7.

Section AJ306 Additions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ306.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Provisions for additions shall apply where work is classified as an addition as defined in Section AJ202.

AJ306.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions to existing buildings shall comply with the provisions of Section AJ8.

Section AJ307 Historic Buildings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ307.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings provisions shall apply to buildings classified as historic as defined in Section AJ202.

AJ307.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Except as specifically provided for in Section AJ9, historic buildings shall comply with applicable provisions of this appendix for the type of work being performed.

Section AJ308 Relocated Buildings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ308.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Relocated buildings provisions shall apply to relocated buildings as defined in Section AJ202.

AJ308.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Relocated buildings shall comply with the provisions of Section AJ10.

Section AJ309 Replacement

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ309.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Replaced buildings provisions shall apply to replaced buildings as defined in Section AJ202.

AJ309.2 Application

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Replaced buildings shall comply with the provisions of Section AJ11.

AJ4 Repairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ401 Renovations General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ401.1 Materials and Methods Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The work shall comply with the materials and methods requirements of this code. Repairs as described in Section AJ302 shall comply with the requirements of this section. Repairs to historic buildings shall comply with this section, except as modified in Section AJ9.

AJ401.2 Door and Window Dimensions Permitted Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Minor reductions in the clear opening dimensions of replacement doors and windows that result from the use of different materials shall be allowed, whether or not they are permitted by this code. Except as otherwise required herein, work shall be done using materials permitted by the applicable code for new construction or using like materials such that no hazard to life, health or property is created.

AJ401.3 Interior Finish Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Wood paneling and textile wall coverings used as an interior finish shall comply with the flame spread requirements of Section R302.9. In flood hazard areas, repairs that constitute substantial improvement shall require that the building comply with Section R322 of this code.

AJ401.4 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Unreinforced masonry buildings located in Seismic Design Category D2 or E shall have parapet bracing and wall anchors installed at the roofline whenever a reroofing permit is issued. Such parapet bracing and wall anchors shall be of an approved design.

Section AJ402 Building Elements and Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ402.1 Hazardous Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Hazardous materials that are no longer permitted, such as asbestos and lead-based paint, not be used.

AJ402.2 Glazing in Hazardous Locations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Replacement glazing in hazardous locations shall comply with the safety glazing requirements of Section R308 as applicable.

Exceptions:
  1. Glass block walls, louvered windows, and jalousies repaired with like materials.
  2. Replacement glazing in historic buildings.

AJ402.3 Reroofing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing roof assemblies undergoing repair shall comply with the applicable requirements of Section AJ502.4 of this appendix.

Section AJ403 Fire and Life Safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ403.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs shall be done in a manner that maintains the level of fire protection provided.

AJ403.2 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When repairs requiring a permit occur, the individual dwelling unit shall be provided with smoke alarms located as required for new dwellings; the smoke alarms shall be interconnected and hard wired.

Exceptions:
  1. Repairs to the exterior surfaces of dwellings are exempt from the requirements of this section.
  2. Except for bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ403.2.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ403.2.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ403.3 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When repairs of fuel-fired appliances and equipment, solid-fuel burning appliances and equipment, or fireplaces and chimneys occur, the individual dwelling unit shall be provided with carbon monoxide alarms as required for new dwellings.

Exception: In other than bed and breakfast dwellings, carbon monoxide alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure. Carbon monoxide alarms shall not be required to be interconnected where battery operated alarms are permitted.

Section AJ404 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ404.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs of structural elements shall comply with this section.

AJ404.2 Reduction of Strength

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs shall not reduce the structural strength or stability of the building, structure or any individual member thereof.

Exception: Such reduction shall be allowed, provided the capacity is not reduced to below the levels required by this code.

AJ404.3 Damaged Buildings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Damaged buildings shall be repaired in accordance with this section.

AJ404.3.1 New Structural Frame Members

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
New structural frame members used in the repair of damaged buildings, including anchorage and connections, shall comply with this code.

AJ404.3.2 Substantial Structural Damage

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings that have sustained substantial structural damage shall comply with this section.

AJ404.3.2.1 Engineering evaluation and analysis

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
An engineering evaluation and analysis that establishes the structural adequacy of the damaged building shall be prepared by a registered design professional and submitted to the code official. The evaluation and analysis may assume that all damaged structural elements and systems have their original strength and stiffness.

AJ404.3.2.1.1 Extent of Repair

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The evaluation and analysis shall demonstrate that the building, once repaired, complies with the applicable wind and seismic provisions of this code.

AJ404.3.3 Below Substantial Structural Damage

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs to buildings damaged to a level below the substantial structural damage level as defined in Section AJ202 shall be allowed to be made with the materials, methods and strengths in existence prior to the damage unless such existing conditions are dangerous as defined in Section AJ202. New structural frame members as defined in Section AJ202 shall comply with Section AJ404.3.1.

AJ404.3.4 Other Uncovered Structural Elements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where in the course of conducting repairs other uncovered structural elements are found to be unsound or otherwise structurally deficient, such elements shall be made to conform to the requirements of Section AJ404.3.2.1.1.

AJ404.3.5 Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
In flood hazard areas, damaged buildings that sustain substantial damage shall be brought into compliance with provisions of this code for flood resistant construction of new structures.

Section AJ405 Mechanical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ405.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs to existing mechanical systems shall be permitted in the same manner and arrangement as in the existing system, provided that such repairs or replacement are not hazardous and are approved.

Section AJ406 Plumbing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ406.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs to existing plumbing systems shall be permitted in the same manner and arrangement as in the existing system, provided that such repairs or replacement are not hazardous and are approved.

AJ406.2 Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The following plumbing materials and supplies shall not be used:

  1. All-purpose solvent cement, unless listed for the specific application;
  2. Flexible traps and tailpieces, unless listed for the specific application; and
  3. Solder having more than 0.2-percent lead in the repair of potable water systems.

AJ406.3 Water Closet Replacement

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When any water closet is replaced, the replacement water closet shall comply with Section P2903.2.

Section AJ407 Electrical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ407.1 Material

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing electrical wiring and equipment undergoing repair shall be allowed to be repaired or replaced with like material.

Exceptions:
  1. Replacement of electrical receptacles shall comply with the applicable requirements of the NFPA 70 or Chapter 39 of this code.
  2. Plug fuses of the Edison-base type shall be used for replacements only where there is no evidence of over fusing or tampering and shall comply with requirements of Chapter 37 this code applying for conductor sizing and overcurrent protection code.
  3. For replacement of nongrounding-type receptacles with grounding-type receptacles and for branch circuits that do not have an equipment grounding conductor in the branch circuitry, the grounding conductor of a grounding-type receptacle outlet shall be permitted to be grounded to any accessible point on the grounding electrode system, or to any accessible point on the grounding electrode conductor as allowed and described in Part VIII - Electrical of this code.
  4. Frames of electric ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, and outlet or junction boxes that are part of the existing branch circuit for these appliances shall be permitted to be grounded to the grounded circuit conductor in accordance with Part VIII - Electrical of this code.

AJ5 Alterations - Level 1

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ501 Alterations General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ501.1 Newly Constructed Elements Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Newly constructed elements, components and systems shall comply with the requirements of this code.

Exceptions:

1. Openable windows may be added without requiring compliance with the light and ventilation requirements of Section R303.

2. Newly installed electrical equipment shall comply with the requirements of Section AJ501.5.
Level 1 alterations as described in Section AJ303 shall comply with the requirements of this section. Level 1 alterations to historic buildings shall comply with this section, except as modified in Section AJ9.

AJ501.2 Nonconformities Conformance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The work shall not increase the extent of noncompliance with the requirements of Section AJ601, or create nonconformity to those requirements that did not previously exist. An existing building or portion thereof shall not be altered such that the building becomes less safe than its existing condition.

Exception. Where the current level of safety or sanitation is proposed to be reduced, the portion altered shall conform to the requirements of this code.

AJ501.3 Extensive Alterations Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the total area of all of the work areas included in an alteration exceeds 50 percent of the area of the dwelling unit, the work shall be considered to be a reconstruction and shall comply with the requirements of these provisions for reconstruction work.

Exception: Work areas in which the alteration work is exclusively plumbing, mechanical or electrical shall not be included in the computation of the total area of all work areas.
In flood hazard areas, alterations that constitute substantial improvement shall require that the building comply with Section R322 of this code.

AJ501.4 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The minimum design loads for the structure shall be the loads applicable at the time the building was constructed, provided that a dangerous condition is not created. Structural elements that are uncovered during the course of the alteration and that are found to be unsound or dangerous shall be made to comply with the applicable requirements of this code.

AJ501.5 Electrical Equipment and Wiring

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ501.5.1 Materials and Methods

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Newly installed electrical equipment and wiring relating to work done in any work area shall comply with the materials and methods requirements of Chapters 34 through 43.

Exception: Electrical equipment and wiring in newly installed partitions and ceilings shall comply with the applicable requirements of Chapters 34 through 43.

AJ501.5.2 Electrical Service

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Service to the dwelling unit shall be not less than 100 ampere, three-wire capacity and service equipment shall be dead front having no live parts exposed that could allow accidental contact. Type "S" fuses shall be installed where fused equipment is used.

Exception: Existing service of 60 ampere, three-wire capacity, and feeders of 30 ampere or larger two- or three-wire capacity shall be accepted if adequate for the electrical load being served.

AJ501.5.3 Additional Electrical Requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the work area includes any of the following areas within a dwelling unit, the requirements of Sections AJ501.5.3.1 through AJ501.5.3.5 shall apply.

AJ501.5.3.1 Enclosed Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Enclosed areas other than closets, kitchens, basements, garages, hallways, laundry areas and bathrooms shall have not less than two duplex receptacle outlets, or one duplex receptacle outlet and one ceiling- or wall-type lighting outlet.

AJ501.5.3.2 Kitchen and Laundry Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Kitchen areas shall have not less than two duplex receptacle outlets. Laundry areas shall have not less than one duplex receptacle outlet located near the laundry equipment and installed on an independent circuit.

AJ501.5.3.3 Ground-Fault Circuit-Interruption

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Ground-fault circuit-interruption shall be provided on newly installed receptacle outlets if required by Chapters 34 through 43.

AJ501.5.3.4 Lighting Outlets

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Not less than one lighting outlet shall be provided in every bathroom, hallway, stairway, attached garage and detached garage with electric power to illuminate outdoor entrances and exits, and in utility rooms and basements where these spaces are used for storage or contain equipment requiring service.

AJ501.5.3.5 Clearance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Clearance for electrical service equipment shall be provided in accordance with Chapters 34 through 43.

AJ501.6 Ventilation

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Reconfigured spaces intended for occupancy and spaces converted to habitable or occupiable space in any work area shall be provided with ventilation in accordance with Section R303.

AJ501.7 Ceiling Height

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Habitable spaces created in existing basements shall have ceiling heights of not less than 6 feet, 8 inches (2032 mm), except that the ceiling height at obstructions shall be not less than 6 feet 4 inches (1930 mm) from the basement floor. Existing finished ceiling heights in nonhabitable spaces in basements shall not be reduced.

AJ501.8 Stairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ501.8.1 Stair Width

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing basement stairs and handrails not otherwise being altered or modified shall be permitted to maintain their current clear width at, above and below existing handrails.

AJ501.8.2 Stair Headroom

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Headroom height on existing basement stairs being altered or modified shall not be reduced below the existing stairway finished headroom. Existing basement stairs not otherwise being altered shall be permitted to maintain the current finished headroom.

AJ501.8.3 Stair Landing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Landings serving existing basement stairs being altered or modified shall not be reduced below the existing stairway landing depth and width. Existing basement stairs not otherwise being altered shall be permitted to maintain the current landing depth and width.

Section AJ502 Building Elements and Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ502.1 Interior Finishes

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
All newly installed interior finishes shall comply with the flame spread and smoke density requirements of Chapter 3 of this code.

AJ502.2 Materials and Methods

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
All new work shall comply with materials and methods requirements of this code.

AJ502.3 Replacement Door and Window Dimensions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Minor reductions in the clear opening dimensions of replacement doors and windows that result from the use of different materials shall be allowed.

AJ502.3.1 Replacement Windows

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The replacement of emergency escape and rescue opening windows in conformance with the code in effect at the time of construction shall not require compliance with Section R310.

AJ502.4 Reroofing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where alteration work includes recovering or replacing an existing roof covering, the provisions of this section shall apply. Reroofing shall be in accordance with Section R908 of the 2015 IRC.

Section AJ503 Means of Egress

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ503.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Means of egress for buildings undergoing alteration shall comply with the requirements of Section 702 of the 2015 IPMC.

Section AJ504 Fire and Life-safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ504.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Alterations shall be done in a manner that maintains the level of fire protection provided.

AJ504.2 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When interior alterations occur in existing dwellings, the individual dwelling unit shall be provided with smoke alarms located as required for new dwellings; the smoke alarms shall be interconnected and hard wired.

Exception: Except for bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ504.2.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ504.2.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ504.3 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When level 1 alterations occur, the individual dwelling unit shall be provided with carbon monoxide alarms as required for new dwellings.

Exception: In other than bed and breakfast dwellings, carbon monoxide alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure. Carbon monoxide alarms shall not be required to be interconnected where battery operated alarms are permitted.

Section AJ505 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ505.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where alteration work includes replacement of equipment that is supported by the building, the structural provisions of this section shall apply.

AJ505.2 Design Criteria

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing structural components supporting alteration work shall comply with this section.

AJ505.2.1 Replacement of Equipment

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where replacement of equipment results in additional dead loads, structural components supporting such equipment shall comply with the load requirements of this code.

Exception: Buildings constructed in accordance with this code and where the additional dead load from the equipment is not increased by more than 5 percent.

AJ505.3 Reroofing Structural and Construction Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The structural roof components shall be capable of supporting the roof covering system and the material and equipment loads that will be encountered during installation of the roof covering system.

Section AJ506 Mechanical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ506.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Alterations to any mechanical system shall conform to the requirements of Chapter 12 for a new mechanical system without requiring the existing mechanical system to comply with all of the requirements of this code.

Section AJ507 Plumbing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ507.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Alterations to any plumbing system shall conform to the requirements for a new plumbing system without requiring the existing plumbing system to comply with all the requirements of this code.

AJ507.2 Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The following plumbing materials and supplies shall not be used:
  1. All-purpose solvent cement, unless listed for the specific application;
  2. Flexible traps and tailpieces, unless listed for the specific application; and
  3. Solder having more than 0.2-percent lead in the repair of potable water systems.

AJ507.3 Water Closet Replacement

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When any water closet is replaced, the replacement water closet shall comply with Section P2903.2.

Section AJ508 Electrical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ508.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Any alteration to an existing electrical system shall be made in conformity with the provisions of Chapter E34 through Chapter E43.

AJ508.2 Energy storage system alterations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Any alteration to an existing energy storage system shall be made to comply with Section R327.

AJ6 Alterations - Level 2

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ601 Reconstruction General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ601.1 Stairways, Handrails and Guards Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Level 2 alterations as described in Section AJ304 shall comply with the requirements of this section. Level 2 alterations to historic buildings shall comply with this section, except as modified in Section AJ9. The requirements of this section are limited to work areas in which Level 2 alterations are being performed, and shall apply beyond the work area where specified.

AJ601.1.1 Stairways

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Stairways within the work area shall be provided with illumination in accordance with Section R303.6.

AJ601.1.2 Handrails

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Every required exit stairway that has four or more risers, is part of the means of egress for any work area, and is not provided with at least one handrail, or in which the existing handrails are judged to be in danger of collapsing, shall be provided with handrails designed and installed in accordance with Section R311 for the full length of the run of steps on not less than one side.

AJ601.1.3 Guards

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Every open portion of a stair, landing or balcony that is more than 30 inches (762 mm) above the floor or grade below, is part of the egress path for any work area, and does not have guards, or in which the existing guards are judged to be in danger of collapsing, shall be provided with guards designed and installed in accordance with Section R312.

AJ601.2 Wall and Ceiling Finish Alteration Level 1 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The interior finish of walls and ceilings in any work area shall comply with the requirements of Section R302.9. Existing interior finish materials that do not comply with those requirements shall be removed or shall be treated with an approved fire-retardant coating in accordance with the manufacturer's instructions to secure compliance with the requirements of this section. In addition to the requirements of this section, all work shall comply with the requirements of Section AJ5.

AJ601.3 Separation Walls Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the work area is in an attached dwelling unit, walls separating dwelling units that are not continuous from the foundation to the underside of the roof sheathing shall be constructed to provide a continuous fire separation using construction materials consistent with the existing wall or complying with the requirements for new structures. Performance of work shall be required only on the side of the wall of the dwelling unit that is part of the work area. All newly constructed elements, components, systems and spaces shall comply with the requirements of this code.

Exceptions:
  1. Space created in basements may have a ceiling that projects to within 6 feet, 8 inches of the finished floor; and beams, girders and ducts in such space or other obstructions may project to within 6 feet, 4 inches of the finished floor. Existing finished ceiling heights in spaces in basements shall not be reduced.
  2. Existing stairs not otherwise being altered shall be permitted to maintain their current clear width at, above, and below existing handrails.
  3. Existing stairs not otherwise being altered shall be permitted to maintain their current riser heights and tread depths.
  4. Headroom height on existing stairs being altered shall not be reduced below the existing stairway finished headroom. Existing stairs not otherwise being altered shall be permitted to maintain the current finished headroom.
  5. Landings for existing stairs not otherwise being altered shall be permitted to maintain their current width.

AJ601.4 Ceiling Height Nonconformities

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Habitable spaces created in existing basements shall have ceiling heights of not less than 6 feet, 8 inches (2032 mm), except that the ceiling height at obstructions shall be not less than 6 feet 4 inches (1930 mm) from the basement floor. Existing finished ceiling heights in nonhabitable spaces in basements shall not be reduced. The work performed shall not increase the extent of noncompliance with the requirements of this code or create nonconformity with those requirements which did not previously exist.

AJ601.5 Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
In flood hazard areas, alterations that constitute substantial improvement shall require that the building comply with Section R322 of this code.

Section AJ602 Building Elements and Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ602.1 Separation Required

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the work area is in a two-family dwelling or multiple single-family dwelling (townhouse) and exceeds 50 percent of the aggregate area of the dwelling unit, all walls separating dwelling units that are not continuous from the foundation to the underside of the roof sheathing shall be constructed to provide a continuous fire separation using construction materials consistent with the existing wall or complying with the requirements for new structures. Work shall only be required to be performed on the side of the wall of the dwelling unit that is part of the work area.

Exception: Where alterations or repairs do not result in the removal of wall or ceiling finishes exposing the structure, walls are not required to be continuous through concealed floor spaces.

AJ602.2 Wall and Ceiling Finish

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the work area exceeds 50 percent of the aggregate area of the dwelling, the interior finish of walls and ceilings in any work area shall comply with the requirements of Section R302.9. All existing interior finish materials that do not comply with those requirements shall be removed or shall be treated with an approved fire retardant coating in accordance with the manufacturer’s instructions to secure compliance with the requirements of this section.

AJ602.3 Guards

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
In work areas, guards designed and installed in accordance with Section R312 shall be provided on every open portion of a floor, stair, landing, porch, deck, porch or deck enclosed with insect screening, or balcony that is more than 30 inches above the floor or grade below, or where the existing guards are judged to be in danger of collapsing.

Section AJ603 Means of Egress

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ603.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The means of egress in work areas where alterations are being performed shall comply with the requirements of this section.

AJ603.2 Exit Doors

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Exit doors in any work area shall comply with Section R311.1 and R311.2.

AJ603.3 Handrails

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Every stairway having four or more risers from a work area floor shall be provided with handrails designed and installed in accordance with Section R311.7.8.

Section AJ604 Fire and Life Safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ604.1 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When interior alterations occur, or when one or more sleeping rooms are added or created in existing dwellings, the individual dwelling unit shall be provided with smoke alarms located as required for new dwellings; the smoke alarms shall be interconnected and hard wired.

Exception: In other than bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ604.1.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ604.1.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ604.2 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When level 2 alterations occur, the individual dwelling unit shall be provided with carbon monoxide alarms as required for new dwellings.

Exception: With the exception of bed and breakfast dwellings, carbon monoxide alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure. Carbon monoxide alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ604.3 Automatic Sprinkler Systems

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
A habitable attic may be created in an existing attic located above the second or third story above grade plane without requiring the installation of a sprinkler system throughout the entire dwelling, provided all of the following conditions are met:
  1. The building was legally occupied before January 1, 1984.
  2. The habitable attic and its means of egress to the exterior are equipped with a limited area sprinkler system installed in accordance with NFPA 13D.
  3. The habitable attic is provided with:
    1. A second exit stair meeting the requirements of Section R311.7, or
    2. An emergency escape and rescue opening, meeting the requirements of Section R310, located directly above a roof or other structural appurtenance from which access to grade does not exceed a vertical distance of 14 feet.
  4. The entire dwelling is equipped with smoke alarms in compliance with Section R314 and monitored by an approved supervising station in accordance with NFPA 72.

AJ604.4 Energy storage system installations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Rooms and areas within dwellings units, sleeping units and attached garages in which energy storage systems are installed shall be protected by smoke alarms in accordance with Section R314. A heat detector or heat alarm listed and interconnected to the smoke alarms shall be installed in locations within dwelling units, sleeping units and attached garages where smoke alarms cannot be installed based on their listing.

Exception: In other than bed and breakfast dwellings, heat alarms in existing areas shall not be required to be interconnected where interior wall or ceiling finishes are not removed to expose the structure.

AJ604.4.1 Power source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Heat alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ604.4.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Heat alarms shall not be required to be interconnected where battery operated alarms are permitted.

Section AJ605 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ605.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The minimum design criteria for existing portions of the structure shall be the loads applicable at the time the building was constructed, provided that no dangerous condition is created. Structural elements which are uncovered during the course of the alteration and which are found to be unsound or dangerous shall be made to comply with the applicable requirements of this code.

AJ605.2 Increased Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where alteration work includes installation of additional equipment that is structurally supported by the building or reconfiguration of space such that portions of the building become subjected to higher dead or live loads, all structural members affected by such increase shall meet the load requirements of this code.

Exception: Structural elements whose stress is not increased by more than 5 percent.

AJ605.3 Reduction of Strength

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Alterations shall not reduce the structural strength or stability of the building, structure or any individual member thereof.

Exception: Such reduction shall be allowed as long as the strength and the stability of the building are not reduced to below the levels required by this code.

AJ605.4 New Structural Members

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
New structural members in alterations, including connections and anchorage, shall comply with this code.

Section AJ606 Mechanical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ606.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Alterations to any mechanical system shall conform to the requirements of Chapter 12 for a new mechanical system without requiring the existing mechanical system to comply with all the requirements of this code. Alterations shall not cause an existing mechanical system to become unsafe, hazardous or overloaded.

AJ606.2 Reconfigured Spaces

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Mechanically ventilated reconfigured spaces shall comply with Section M1507 as applicable.

Section AJ607 Plumbing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ607.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Alterations to any plumbing system shall conform to the requirements for a new plumbing system without requiring the existing plumbing system to comply with all the requirements of this code. Alterations shall not cause an existing system to become unsafe, insanitary or overloaded.

AJ607.2 Increased Demand

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where any alteration subjects any portion of an existing plumbing system to increased loads, such portion shall be made to comply with Chapters 25 through 33.

Section AJ608 Electrical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ608.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Any alteration to an existing electrical system relating to work done in any work area shall be made in conformity with the provisions of Chapters 34 through 43.

AJ608.2 Increased Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where alterations subject portions of existing electrical systems to increased loads, such portions shall be made to comply with Chapter 34 through Chapter 43.

AJ608.3 Electrical Service

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Service to dwelling units shall be a minimum of 100 ampere, three-wire capacity, and service equipment shall be dead front having no live parts exposed whereby accidental contact could be made. Type “S” fuses shall be installed when fused equipment is used.

Exception: Existing service of 60 ampere, three-wire capacity, and feeders of 30 ampere or larger two-or three-wire capacity shall be accepted if adequate for the electrical load being served.

AJ608.3.1 Clearance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Clearance for electrical service equipment shall be provided in accordance with Section E3405.

AJ608.4 Ground-fault and Arc-fault Circuit-interrupter Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Ground-fault and arcfault circuit-interrupter protection shall be provided on newly installed receptacle outlets as required by Section E3902.

AJ608.5 Additional Electrical Requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When the work area includes any of the following areas within a dwelling unit, the requirements of Sections AJ608.5.1 through AJ608.5.3 shall apply.

AJ608.5.1 Enclosed Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
All enclosed areas other than closets, kitchens, basements, garages, hallways, laundry areas and bathrooms shall have a minimum of two duplex receptacle outlets, or one duplex receptacle outlet and one ceiling or wall type lighting outlet.

AJ608.5.2 Kitchen and Laundry Area

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Kitchen areas shall have a minimum of two duplex receptacle outlets. Laundry areas shall have a minimum of one duplex receptacle outlet located near the laundry equipment and installed on an independent circuit.

AJ608.5.3 Bathrooms, Hallways, Stairways, Attached and Detached Garages

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
At least one lighting outlet shall be provided in every bathroom, hallway, stairway, attached garage and detached garage with electric power to illuminate outdoor entrances and exits, and in utility rooms and basements where these spaces are used for storage or contain equipment requiring service.

AJ608.6 Energy storage system installations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Energy storage systems installed in existing buildings and structures shall be comply with Section R327.

AJ7 CHANGE OF OCCUPANCY

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ701 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ701.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the character or use of an existing building is changed, as described in Section AJ305, to a one- or two-family dwelling or multiple single-family dwelling (townhouse) not more than three stories above grade plane in height with a separate means of egress, or where an owner-occupied one-family dwelling is converted for use as a Bed and Breakfast Dwelling, the building shall comply with this section. Alterations performed in connection with a change of occupancy shall comply with Section AJ5 or AJ6 as applicable. Changes of occupancy to historic buildings shall comply with this section, except as modified by Section AJ9. Owner-occupied one-family dwellings converted for use as a Bed and Breakfast Dwellings shall also comply with Section AJ704.

Section AJ702 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ702.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The building shall comply with the provisions of this code.

Exception: Compliance with the provisions of this code is not required where the change of occupancy is from a two-family dwelling to a one-family dwelling; smoke alarms and carbon monoxide alarms shall be provided as required in Section AJ703.

AJ702.2 Existing Emergency Escape and Rescue Openings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Emergency escape and rescue openings need not meet the requirements of this code where such openings were lawfully in existence at the time of the adoption of this code.

AJ702.3 Existing Stairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing stairs are permitted to remain, provided all of the following conditions are met:

  1. The product obtained by multiplying the height of the riser by the depth of the tread shall be not less than 70 inches nor more than 80 inches. Riser height shall not exceed 9 inches.
  2. Stairs shall have minimum headroom of 6 feet 6 inches, except that stairs for occasional use to basements and attics are permitted to have minimum headroom of 6 feet 4 inches.
  3. Variations in riser height in a run of stairs shall not exceed 3/8 inch.
  4. Width shall be not less than 30 inches.

AJ702.4 Existing Ceiling Heights

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing ceiling heights shall be permitted to remain if they equal or exceed the following:

  1. Habitable space shall have a ceiling height of not less than 6 feet 8 inches, measured from the finished floor to the lowest projection from the ceiling.
  2. Space, other than habitable, shall have a ceiling height of not less than 6 feet 6 inches, measured from the finished floor to the lowest projection from the ceiling.

AJ702.5 Existing Foundations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing foundations are permitted to remain where the change in use will increase the soil bearing pressure by no more than 5 percent.

AJ702.6 Seismic Load Provisions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Specific seismic load detailing provisions required for new structures are not required to be met where it can be shown that an acceptable level of performance and seismic safety is obtained for the applicable seismic design category.

Section AJ703 Fire and Life-safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ703.1 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms, located as required for new dwellings, shall be provided; the smoke alarms shall be interconnected and hard wired.

Exception: In other than bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ703.1.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ703.1.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ703.2 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the character or use of an existing building is changed, carbon monoxide alarms shall be provided as required for new dwellings.

Exception: In other than bed and breakfast dwellings, carbon monoxide alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure. Carbon monoxide alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ703.3 Automatic Fire Sprinkler System

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
An automatic sprinkler system as required for new dwellings shall be provided.

Section AJ704 Bed and Breakfast Dwellings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ704.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Owner-occupied one-family dwellings converted for use as bed and breakfast dwellings as defined in Section J202 shall comply with this section.

AJ704.2 Occupancy

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
A residence converted to a bed and breakfast dwelling shall have no more than five sleeping rooms for accommodating up to 10 transient lodgers.

AJ704.3 Special Conditions

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
A one-family dwelling is permitted to be converted for use as a bed and breakfast dwelling under the following conditions:

  1. No sleeping rooms for transient use shall be located above the second story above grade plane.
  2. A fire-safety notice shall be affixed to the occupied side of the entrance door of each bedroom for transient use indicating:
    1. Means of egress;
    2. Location of means for transmitting fire alarms, if any; and
    3. Evacuation procedures to be followed in the event of a fire or smoke condition or upon activation of a fire or smoke-detecting or other alarm device.

AJ704.4 Means of Egress

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Means of egress shall include at least one of the following alternatives:
  1. A limited area sprinkler system installed in conformance with NFPA 13D protecting all interior stairs serving as a means of egress;
  2. An exterior stair conforming to the requirements of R311.7 of this code, providing a second means of egress from all above grade stories or levels; or
  3. An opening for emergency use conforming to the requirements of Section R310 of this code within each bedroom for transient use, such opening to have a sill not more than 14 feet above level grade directly below and, as permanent equipment, a portable escape ladder that attaches securely to such sill. Such ladder shall be constructed with rigid rungs designed to stand off from the building wall, shall be capable of sustaining a minimum load of 1,000 pounds, and shall extend to and provide unobstructed egress to open space at grade.

AJ8 ADDITIONS

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ801 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ801.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions as described in Section AJ306 shall comply with the requirements of this section.

AJ801.2 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions shall comply with the provisions of this code. Except where required by this section, unaltered portions of the existing building shall not be required to comply with this code.

AJ801.3 Creation or Extension of Nonconformity

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
An addition shall not create or extend any nonconformity in the existing building to which the addition is being made with regard to height, structural strength, fire safety, means of egress, or the capacity of mechanical, plumbing or electrical systems.

AJ801.4 Other Work

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Any repair or alteration work within an existing building to which an addition is being made shall comply with the applicable requirements for the work as classified in Section AJ3.

Section AJ802 Fire and Life-safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ802.1 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When additions requiring a permit occur, the individual dwelling unit shall be provided with smoke alarms located as required for new dwellings; the smoke alarms shall be interconnected and hard wired.

Exceptions:
  1. Exterior additions to dwellings, such as decks, are exempt from the requirements of this section.
  2. In other than bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ802.1.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in existing areas of buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ802.1.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ802.2 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where additions requiring a permit occur, carbon monoxide alarms shall be provided as required for new dwellings.

Exceptions:
  1. Exterior additions to dwellings, such as decks, are exempt from the requirements of this section.
  2. In other than bed and breakfast dwellings, carbon monoxide alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure. Carbon monoxide alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ802.3 Automatic Sprinkler Systems

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings shall be equipped throughout with an automatic sprinkler system installed in accordance with NFPA 13D whenever:

  1. a vertical addition is made to a building to create a third story above grade plane,
  2. a habitable attic is added above an existing second or third story above grade plane, or
  3. the floor area of a legally existing third story above grade plane is increased by more than 10 percent.

Section AJ803 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ803.1 Additional Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing structural elements supporting any additional loads as a result of additions shall comply with this code.

Exception: Structural elements whose stress is not increased by more than 5 percent.

AJ803.2 Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions and foundations in flood hazard areas shall comply with the following requirements:

  1. For horizontal additions that are structurally interconnected to the existing building:
    1. If the addition and all other proposed work, when combined, constitute substantial improvement, the existing building and the addition shall comply with Section R322 of this code.
    2. If the addition constitutes substantial improvement, the existing building and the addition shall comply with Section R322.
  2. For horizontal additions that are not structurally interconnected to the existing building:
    1. The addition shall comply with Section R322.
    2. If the addition and all other proposed work, when combined, constitute substantial improvement, the existing building and the addition shall comply with Section R322.
  3. For vertical additions and all other proposed work that, when combined, constitute substantial improvement, the existing building shall comply with Section R322.
  4. For a new, replacement, raised, or extended foundation, if the foundation work and all other proposed work, when combined, constitute substantial improvement, the existing building shall comply with Section R322.

Section AJ804 Mechanical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ804.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions to any mechanical system shall conform to the requirements of Chapter 12 for a new mechanical system without requiring the existing mechanical system to comply with all of the requirements of this code. The existing mechanical system shall be evaluated for adequacy by qualified industry personnel or a registered design professional. Additions shall not cause an existing system to become unsafe, hazardous or overloaded.

Section AJ805 Plumbing

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ805.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Additions to any plumbing system shall conform to the requirements for a new plumbing system without requiring the existing plumbing system to comply with all the requirements of this code. Additions shall not cause an existing system to become unsafe, insanitary or overloaded.

AJ805.2 Sanitary Disposal System

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where an addition results in an increase in the number of bedrooms, the capacity of the existing sanitary disposal system shall be determined and any required expansion or replacement shall comply with this code.

Section AJ806 Electrical

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ806.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Any addition to an existing electrical system shall be made in conformity with the provisions of Chapters 34 through 43. Where additions subject portions of existing systems to loads exceeding those permitted herein, such portions shall be made to comply with Chapters 34 through 43.

AJ9 HISTORIC BUILDINGS

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ901 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ901.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
It is the intent of this section to provide means for the preservation of historic buildings. Historical buildings as described in Section AJ307 shall comply with the provisions of this section relating to their repair, alteration, change of occupancy or relocation.

AJ901.2 Report

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
A historic building undergoing repair, alteration or change of occupancy shall be investigated and evaluated. If it is intended that the building meet the requirements of this section, a written report shall be prepared and filed with the code enforcement official by a registered design professional when such a report is necessary in the opinion of the code official. Such report shall identify each required safety feature that is in compliance with this section and where compliance with other sections of these provisions would be damaging to the contributing historic features. The report shall describe each feature that is not in compliance with these provisions and shall demonstrate how the intent of these provisions is complied with in providing an equivalent level of safety.

AJ901.3 Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
In flood hazard areas, if all proposed work, including repairs, work required because of a change of occupancy, and alterations, constitutes substantial improvement, then the existing building shall comply with Section R322.

Exception: If a historic building will continue to be a historic building after the proposed work is completed, then the proposed work is not considered a substantial improvement.

AJ901.4 Dangerous Buildings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When a historic building is determined to be dangerous, no work shall be required except as necessary to correct identified unsafe conditions.

Section AJ902 Fire and Life-safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ902.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing repairs, alterations, changes of occupancy or that are relocated shall comply with this section.

AJ902.2 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms, located as required for new dwellings, shall be provided; the smoke alarms shall be interconnected and hard wired.

Exception: In other than bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ902.2.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ902.2.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ902.3 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Carbon monoxide alarms shall be provided as required for new dwellings.

Exception: In other than bed and breakfast dwellings, carbon monoxide alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure. Carbon monoxide alarms shall not be required to be interconnected where battery operated alarms are permitted. At least one carbon monoxide alarm shall be provided in each dwelling unit in compliance with Section R315.

Section AJ903 Building Elements and Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ903.1 Means of Egress

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Existing door openings and corridor and stairway widths less than those specified elsewhere in this code may be approved, provided that there is sufficient width and height for a person to pass through the opening or traverse the corridor or stairway.

AJ903.2 Interior Finishes

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The existing finishes of walls and ceilings shall be accepted when it is demonstrated that they are the historic finishes.

AJ903.3 Fire-resistant Assemblies

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where fire-resistance-rated construction is required by this code, it need not be provided where the existing wall and ceiling finish is wood or metal lath and plaster.

AJ903.4 Stairway Railings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Stairways shall be accepted without complying with the handrail and guard requirements. Existing handrails and guards at all stairs shall be permitted to remain, provided they are not structurally dangerous.

AJ903.5 Guard Openings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The spacing between existing intermediate railings or openings in existing ornamental patterns shall be accepted. Missing elements or members of a guard may be replaced in a manner that will preserve the historic appearance of the building or structure.

Section AJ904 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ904.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings shall comply with the applicable structural provisions for the work as classified in Section AJ3.

Exception: The code official shall be authorized to accept existing floors and approve operational controls that limit the live load on any such floor.

AJ904.2 Unsafe Structural Elements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where the code official determines that a component or a portion of a building or structure is dangerous as defined in this code and is in need of repair, strengthening or replacement by provisions of this code, only that specific component or portion shall be required to be repaired, strengthened or replaced.

Section AJ905 Repairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ905.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Repairs to any portion of a historic building or structure shall be permitted with original or like materials and original methods of construction, subject to the provisions of this section.

AJ905.2 Section AAJ4 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing repairs shall comply with all of the applicable requirements of Section AJ4.

Exception: Replacement of existing or missing features using original materials shall be permitted. Partial replacement for repairs that match the original in configuration, height and size shall be permitted. Such replacements shall not be required to meet the materials and methods requirements of Section AJ401.2.

Section AJ906 Alterations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ906.1 Level 1 Alterations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing Level 1 alterations as described in Section AJ303 shall comply with the applicable provisions of Section. AJ5, except as specifically permitted in Section AJ9.

AJ906.2 Level 2 Alterations

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing Level 2 alterations as described in Section AJ303 shall comply with the applicable provisions of Section. AJ6, except as specifically permitted in Section AJ9.

Section AJ907 Change of Occupancy

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ907.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing a change of occupancy shall comply with the applicable provisions of Section AJ7, except as specifically permitted in this Section.

AJ907.2 Location on Property

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic structures undergoing a change of use may use alternative methods to comply with the requirements of Section R302. Such alternatives shall comply with Section AJ901.2.

AJ907.3 Dwelling Unit Separation

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Required dwelling unit separations may be omitted when the building is equipped throughout with an approved automatic sprinkler system

AJ907.4 Light, Ventilation and Heating

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When it is determined by the code official that compliance with the light, ventilation and heating requirements of Section R303 will lead to loss of historic character or historic materials in the building, the existing level of light, ventilation and heating shall be considered acceptable.

Section AJ908 Relocated Buildings

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ908.1 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Relocated historic buildings shall continue to be considered historic buildings for the purposes of this code.

AJ908.2 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings shall comply with the applicable provisions for the work as classified in Section AJ3, except as specifically permitted in Section AJ9.

AJ908.3 Location on the Lot

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Relocated historic buildings and structures shall be sited so that exterior walls and openings comply with Section R302 of this code.

AJ908.4 Foundation

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Foundations of relocated historic buildings and structures shall comply with this code.

AJ10 RELOCATED OR MOVED BUILDINGS

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ1001 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ1001.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Relocated or moved buildings as described in Section AJ308 shall comply with this section. Relocated or moved historic buildings shall comply with Section AJ9.

AJ1001.2 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The building shall comply with the provisions of the 2015 IFC and the 2015 IPMC as applicable. Any repair, alteration, or change of occupancy undertaken within the moved structure shall comply with the requirements of this appendix applicable to the work being performed. Any field-fabricated elements shall comply with the requirements of this code as applicable.

AJ1001.3 Location on the Lot

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The building shall be located on the lot in accordance with the requirements of Section R302.

AJ1001.4 Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
If relocated or moved into a flood hazard area, buildings shall comply with Section R322.

Section AJ1002 Building Elements and Materials

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ1002.1 Foundation

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The foundation system of relocated buildings shall comply with this code as applicable.

AJ1002.1.1 Connection to the Foundation

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The connection of the relocated building to the foundation shall comply with this code as applicable.

Section AJ1003 Fire and Life Safety Protection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ1003.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Relocated or moved buildings shall comply with this section.

AJ1003.2 Smoke Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms, located as required for new dwellings, shall be provided; the smoke alarms shall be interconnected and hard wired.

Exception: In other than bed and breakfast dwellings, smoke alarms in existing areas shall not be required to be interconnected and hard wired where interior wall or ceiling finishes are not removed to expose the structure.

AJ1003.2.1 Power Source

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power or an on-site electrical power system, or in buildings where existing interior wall or ceiling finishes are not removed to expose the structure.

AJ1003.2.2 Interconnection

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Smoke alarms shall not be required to be interconnected where battery operated alarms are permitted.

AJ1003.3 Carbon Monoxide Alarms

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
At least one carbon monoxide alarm shall be provided in each dwelling unit in compliance with Section R315.

Section AJ1004 Structural

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ1004.1 Required Inspection and Repairs

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The code official shall be authorized to inspect, or to require approved professionals to inspect at the expense of the owner, the various structural parts of a relocated building to verify that structural components and connections have not sustained structural damage. Any repairs required by the code official as a result of such inspection shall be made prior to the final approval.

AJ1004.2 Wind Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings shall comply with the wind provisions of this code as applicable.

Exceptions:
  1. Detached one- and two-family dwellings where wind loads at the new location are not higher than those at the previous location.
  2. Structural elements whose stress is not increased by more than 5 percent.

AJ1004.3 Seismic Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings shall comply with the seismic provisions of this code at the new location as applicable.

Exceptions:
  1. Where the seismic loads at the new location are not higher than those at the previous location.
  2. Structural elements whose stress is not increased by more than 5 percent.

AJ1004.4 Snow Loads

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings shall comply with the snow loads provisions of this code as applicable where snow loads at the new location are higher than those at the previous location.

Exception: Structural elements whose stress is not increased by more than 5 percent.

AJ11 REPLACEMENT

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

Section AJ1101 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.

AJ1101.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings that are replaced as described in Section AJ309 shall comply with the requirements of this section.

AJ1101.2 Compliance

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Buildings that are replaced shall comply with the provisions of this code.

AJ1101.3 Sanitary Disposal System

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where a building replacement results in an increase in the number of bedrooms, the capacity of the existing sanitary disposal system shall be determined and any required expansion or replacement shall comply with this code.
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