CODES

ADOPTS WITH AMENDMENTS:

International Existing Building Code 2009 (IEBC 2009)

Chapter 1 Scope and Administration

Chapter 2 Definitions

Chapter 3 Prescriptive Compliance Method

Chapter 4 Classification of Work

Chapter 5 Repairs

Chapter 6 Alterations - Level 1

Chapter 7 Alterations - Level 2

Chapter 8 Alterations - Level 3

Chapter 9 Change of Occupancy

Chapter 10 Additions

Chapter 11 Historic Buildings

Chapter 12 Relocated or Moved Buildings

Chapter 13 Performance Compliance Methods

Chapter 14 Construction Safeguards

Chapter 15 Referenced Standards

Chapter A1 Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings

Chapter A2 Earthquake Hazard Reduction in Existing Reinforced Concrete and Reinforced Masonry Wall Buildings With Flexible Diaphragms

Chapter A3 Prescriptive Provisions for Seismic Strengthening of Cripple Walls and Sill Plate Anchorage of Light, Woodframe Residential Buildings

Chapter A4 Earthquake Hazard Reduction in Existing Woodframe Residential Buildings With Soft, Weak or Openfront Walls

Chapter A5 A5 Earthquake Hazard Reduction in Existing Concrete Buildings

Appendix A Guidelines for the Seismic Retrofit of Existing Buildings

Appendix B Supplementary Accessibility Requirements for Existing Buildings and Facilities

Resource A1 Fire-Related Performance of Archaic Materials and Assemblies

Resource A2 Building Evaluation

Resouce A3 : Final Evaluation and Design Solution

Resource A4 Summary

Resource A Appendix : Table of Contents

Resource A Appendix: Section I - Walls

Resource A Appendix : Section II - Columns

Resource A Appendix : Section III - Floor/Ceiling Assemblies

Resource A Appendix : Section IV - Beams

Resource A Appendix : Section V - Doors

Bibliography

1101.1 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 chapter to provide means for the preservation of historic buildings. Historical buildings shall comply with the provisions of this chapter relating to their repair, alteration, relocation and change of occupancy.

1101.1 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 chapter to provide means for the preservation of historic buildings as certified by the Massachusetts Historical Commission. There is no obligation for owners of historic buildings to use the provisions of this chapter. This chapter shall preempt all other regulations of 780 CMR governing the reconstruction, renovation, alteration, change of use and occupancy, repair, maintenance and additions for the conformity of historic buildings and structures to 780 CMR, with the exception of section 113 of the International Building Code 2009 with Massachusetts Amendments (780 CMR 113) for appeals, or unless otherwise specified. In case of fire or other casualty to a historic building, said building may be rebuilt, in total or in part, using such techniques and materials as are necessary to restore it to its original condition and use group. If a building or structure as a result of proposed work would become eligible for certification as a historic building and the Massachusetts Historical Commission so certifies by affidavit, and such affidavit is submitted to the building official with the permit application, then the building officialshall have the authority to allow the work to proceed under the provisions of this chapter
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 chapter, a written report shall be prepared and filed with the code official by a registered design professional when such a report is necessary in the opinion of the code official. Such report shall be in accordance with Chapter 1 and shall identify each required safety feature that is in compliance with this chapter and where compliance with other chapters of these provisions would be damaging to the contributing historic features. For buildings assigned to Seismic Design Category D, E or F, a structural evaluation describing, at minimum, a complete load path and other earthquake-resistant features shall be prepared. Additionally, 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.

1101.3 Special Occupancy Exceptions—museums

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
When a building in Group R-3 is also used for Group A, B, or M purposes such as house museum tours, exhibits, and other public assembly activities, or for house museums less than 3,000 square feet (279 m2), the code official may determine that the occupancy is Group B when life-safety conditions can be demonstrated in accordance with Section 1101.2. Adequate means of egress in such buildings, which may include a means of maintaining doors in an open position to permit egress, a limit on building occupancy to an occupant load permitted by the means of egress capacity, a limit on occupancy of certain areas or floors, or supervision by a person knowledgeable in the emergency exiting procedures, shall be provided.

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 1612 of the International Building Code.

Exception: If an historic building will continue to be an historic building after the proposed work is completed, then the proposed work is not considered a substantial improvement. For the purposes of this exception, an historic building is:

1. Listed or preliminarily determined to be eligible for listing in the National Register of Historic Places;

2. Determined by the Secretary of the U.S. Department of Interior to contribute to the historical significance of a registered historic district or a district preliminarily determined to qualify as a historic district; or

3. Designated as historic under a state or local historic preservation program that is approved by the Department of Interior.

Repairs to any portion of an historic building or structure shall be permitted with original or like materials and original methods of construction, subject to the provisions of this chapter.
When an historic building is determined to be dangerous, no work shall be required except as necessary to correct identified unsafe conditions.
Foundations of relocated historic buildings and structures shall comply with the International Building Code. Relocated historic buildings shall otherwise be considered an historic building for the purposes of this code. Relocated historic buildings and structures shall be sited so that exterior wall and opening requirements comply with the International Building Code or with the compliance alternatives of this code.
Historic buildings undergoing repairs shall comply with all of the applicable requirements of Chapter 5, except as specifically permitted in this chapter.

1102.5 Replacement

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

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 501.2.

Exception: Replacement glazing in hazardous locations shall comply with the safety glazing requirements of Chapter 24 of the International Building Code.

1102.5 Replacement

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
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 501.2. Individual components of an existing building system may be repaired or replaced in kind without requiring the system to comply with the code for new construction.

1103.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing alterations, changes of occupancy, or that are moved shall comply with Section 1103.

1103.1 Scope

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Historic buildings undergoing alterations, or that are moved shall comply with section 1103.

1103.2 General

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Every historic building that does not conform to the construction requirements specified in this code for the occupancy or use and that constitutes a distinct fire hazard as defined herein shall be provided with an approved automatic fire-extinguishing system as determined appropriate by the code official. However, an automatic fire-extinguishing system shall not be used to substitute for, or act as an alternative to, the required number of exits from any facility.

1103.2.1 Maximum Occupancy

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
House museum occupancy shall be limited by the actual structural floor load capacity as certified by a qualified Massachusetts registered professional engineer or architect or in accordance with Chapter 10 of the International Building Code 2009 with Massachusetts Amendments (780 CMR 10.00), whichever is less. Said floor load shall be posted in accordance with the procedures set forth in Chapter 1 of the International Building Code 2009 with Massachusetts Amendments (780 CMR 1.00). The owner shall submit evidence of this certification and related computations to the building official upon request.

1103.3 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, in the opinion of the code official, there is sufficient width and height for a person to pass through the opening or traverse the means of egress. When approved by the code official, the front or main exit doors need not swing in the direction of the path of exit travel, provided that other approved means of egress having sufficient capacity to serve the total occupant load are provided.

1103.3 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, in the opinion of the building official, there is sufficient width and height for a person to pass through the opening or traverse the means of egress. When approved by the building official, the front or main exit doors need not swing in the direction of the path of exit travel, provided that other approved means of egress having sufficient capacity to serve the total occupant load are provided. Where one or more floors of a house museum are limited to one means of egress, the occupancy load shall be computed as follows:
  1. Floors below the First Story. Not more than one occupant per 100 square feet of gross floor area with a maximum occupancy of 49.
  2. First Story. Not more than one occupant per 50 square feet of gross floor area.
  3. Second Story and Above. Not more than one occupant per 100 square feet of gross floor area, or 30 occupants per 22 inch unit of egress width, whichever condition results in the lesser occupancy load.
In fully sprinklered buildings of Group R-1, R-2 or R-3 occupancy, existing transoms in corridors and other fire-resistance-rated walls may be maintained if fixed in the closed position. A sprinkler shall be installed on each side of the transom.
The existing finishes of walls and ceilings shall be accepted when it is demonstrated that they are the historic finishes.
In buildings of three stories or less, exit enclosure construction shall limit the spread of smoke by the use of tight-fitting doors and solid elements. Such elements are not required to have a fire-resistance rating.
Where 1-hour fire-resistance-rated construction is required by these provisions, it need not be provided, regardless of construction or occupancy, where the existing wall and ceiling finish is wood or metal lath and plaster.
Historic glazing materials are permitted in interior walls required to have a 1-hour fire-resistance rating where the opening is provided with approved smoke seals and the area affected is provided with an automatic sprinkler system.
Grand 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.
Guards shall comply with Sections 1103.10.1 and 1103.10.2.
Existing guards shall comply with the requirements of Section 505.
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.
Where exit sign or egress path marking location would damage the historic character of the building, alternative exit signs are permitted with approval of the code official. Alternative signs shall identify the exits and egress path.

1103.12 Automatic Fire-Extinguishing Systems

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

Every historical building that cannot be made to conform to the construction requirements specified in the International Building Code for the occupancy or use and that constitutes a distinct fire hazard shall be deemed to be in compliance if provided with an approved automatic fire-extinguishing system.

Exception: When the code official approves an alternative life-safety system.

1103.12 Fire Protection Equipment

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Fire protection equipment shall be provided for house museums according to the following requirements:
  1. Manual Fire Extinguishing Equipment. All use groups, other than R-3 and R-4, shall have approved manual fire extinguishing equipment, as determined by the head of the local fire department.
  2. Fire Alarm Systems. Use groups R-1, R-2 and R-3 shall conform to the requirements of section 907 of the International Building Code 2009 with Massachusetts Amendments (780 CMR 907), as applicable. All other use groups shall comply with section 1103.12 items 2.(a) and (b) of the International Building Code 2009 with Massachusetts Amendments (780 CMR 1103.12 items 2.(a) and (b)).
    1. Locations. Provide smoke detectors in accordance with manufacturers listing and spacing requirements, but not less than one, for every 1200 square feet of floor area per level. In addition, all lobbies, common corridors, hallways and exitway access and discharge routes shall be provided with approved smoke detectors installed in accordance with the manufacturers listing and spacing requirements but not more than 30 feet spacing between detectors. All required smoke detectors shall have an alarm audible throughout the structure or building.
    2. Single Station and Multiple Station Smoke Detection Devices. As required by Chapter 9 of the International Building Code 2009 with Massachusetts Amendments (780 CMR 9.00).
  3. 3. Manual Pull Stations. A manual fire alarm pull station shall be provided in the natural path of egress in all use groups except R-3 and R-4. Manual pull stations shall be connected to the building fire warning system in conformance with NFPA 72.
    Exception. Historic buildings which are provided with an approved automatic fireextinguishing system throughout shall not be required to be provided with manual fire extinguishing equipment. Smoke detection devices shall not be required in occupancies other than Use Groups R-1, R-2, and R-3.

1103.12.1 Supervision

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Fire alarm systems required by this section shall be supervised in accordance with the requirements of Chapter 9 of the International Building Code 2009 with Massachusetts Amendments (780 CMR 9.00).
Exception. Residential single and multiple station smoke detectors.

1104.1 Accessibility Requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The provisions of 605 and 706, as applicable, shall apply to buildings and facilities designated as historic structures that undergo alterations, unless technically infeasible. Where compliance with the requirements for accessible routes, entrances or toilet facilities would threaten or destroy the historic significance of the building or facility, as determined by the code official, the alternative requirements of Sections 1104.1.1 through 1104.1.4 for that element shall be permitted.
For accessibility requirements refer to 521 CMR.

1104.1.1 Site Arrival Points

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
At least one main entrance shall be accessible.

1104.1.2 Multilevel Buildings and Facilities

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
An accessible route from an accessible entrance to public spaces on the level of the accessible entrance shall be provided.

1104.1.3 Entrances

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

At least one main entrance shall be accessible.

Exceptions:

1. If a main entrance cannot be made accessible, an accessible nonpublic entrance that is unlocked while the building is occupied shall be provided; or

2. If a main entrance cannot be made accessible, a locked accessible entrance with a notification system or remote monitoring shall be provided.

1104.1.4 Toilet and Bathing Facilities

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
Where toilet rooms are provided, at least one accessible family or assisted-use toilet room complying with Section 1109.2.1 of the International Building Code shall be provided.
Historic buildings undergoing a change of occupancy shall comply with the applicable provisions of Chapter 9, except as specifically permitted in this chapter. When Chapter 9 requires compliance with specific requirements of Chapter 5, Chapter 6, or Chapter 7 and when those requirements are subject to the exceptions in Section 1102, the same exceptions shall apply to this section.
The allowable floor area for historic buildings undergoing a change of occupancy shall be permitted to exceed by 20 percent the allowable areas specified in Chapter 5 of the International Building Code.
Historic structures undergoing a change of use to a higher hazard category in accordance with Section 912.6 may use alternative methods to comply with the fire-resistance and exterior opening protective requirements. Such alternatives shall comply with Section 1101.2.
Required occupancy separations of 1 hour may be omitted when the building is provided with an approved automatic sprinkler system throughout.
Regardless of occupancy or use group, roof-covering materials not less than Class C shall be permitted where a fire-retardant roof covering is required.
Existing door openings and corridor and stairway widths less than those that would be acceptable for nonhistoric buildings under these provisions shall be approved, provided that, in the opinion of the code official, there is sufficient width and height for a person to pass through the opening or traverse the exit and that the capacity of the exit system is adequate for the occupant load, or where other operational controls to limit occupancy are approved by the code official.
When approved by the code official, existing front doors need not swing in the direction of exit travel, provided that other approved exits having sufficient capacity to serve the total occupant load are provided.

In corridor walls required by these provisions to be fire-resistance rated, existing transoms may be maintained if fixed in the closed position, and fixed wired glass set in a steel frame or other approved glazing shall be installed on one side of the transom.

Exception: Transoms conforming to Section 1103.4 shall be accepted.

Where interior finish materials are required to have a flame spread index of Class C or better, existing nonconforming materials shall be surfaced with approved fire-retardant paint or finish.

Exception: Existing nonconforming materials need not be surfaced with an approved fire-retardant paint or finish where the building is equipped throughout with an automatic fire-suppression system installed in accordance with the International Building Code and the nonconforming materials can be substantiated as being historic in character.

Where 1-hour fire-resistance-rated construction is required by these provisions, it need not be provided, regardless of construction or occupancy, where the existing wall and ceiling finish is wood lath and plaster.

Existing stairways shall comply with the requirements of these provisions. The code official shall grant alternatives for stairways and railings if alternative stairways are found to be acceptable or are judged to meet the intent of these provisions. Existing stairways shall comply with Section 1103.

Exception: For buildings less than 3,000 square feet (279 m2), existing conditions are permitted to remain at all stairs and rails.

The code official may accept alternative exit sign locations where such signs would damage the historic character of the building or structure. Such signs shall identify the exits and exit path.
Existing historic stairways in buildings changed to a Group R-1 or R-2 occupancy shall be accepted where it can be shown that the stairway can support a 75-pounds-per-square-foot (366 kg/m2) live load.
When it is determined by the code official that compliance with the natural light requirements of Section 911.1 will lead to loss of historic character or historic materials in the building, the existing level of natural lighting shall be considered acceptable.

1105.15 Accessibility Requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
The provisions of Section 912.8 shall apply to buildings and facilities designated as historic structures that undergo a change of occupancy, unless technically infeasible. Where compliance with the requirements for accessible routes, ramps, entrances, or toilet facilities would threaten or destroy the historic significance of the building or facility, as determined by the authority having jurisdiction, the alternative requirements of Sections 1104.1.1 through 1104.1.5 for those elements shall be permitted.

1105.15 Accessibility requirements

AMENDMENT
This section has been amended at the state or city level. Amendments are shown in green text.
For accessibility requirements refer to 521 CMR.

1106.1 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 Chapter 4.

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

1106.1 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 Chapter 4.
Exceptions
  1. The building official shall be authorized to accept existing floors and approve operational controls that limit the live load on any such floor.
  2. House museums need not comply with the wind load and seismic load requirements of this code.
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.
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