- Construction, alteration and repair of any foundation system that which is necessary to provide for the installation of a manufactured home unit.
- Construction, installation, addition, alteration, repair or maintenance of the building service equipment that which is necessary for connecting manufactured homes to water, fuel, or power supplies and sewage systems.
- Alterations, additions or repairs to existing manufactured homes. The construction, alteration, moving, demolition, repair and use of accessory buildings and structures, and their building service equipment, shall comply with the requirements of the codes adopted by this jurisdiction this code.
- Be certified under the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Section 5401, et seq.).
- Be designed and constructed to conform to the applicable provisions of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Section 5401, et seq.).
- Be designed and constructed in conformance with new construction requirements of this code.
1. Be certified under the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Section 5401, et seq.).
2. Be designed and constructed to comply with conform to the applicable provisions of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Section 5401, et seq.).
3. Be designed and constructed in compliance conformance with the code adopted by this jurisdiction new construction requirements of this code.
Additions shall be structurally separated from the manufactured home.
Exception: A structural separation need not be provided when structural calculations are provided to justify the omission of such separation.
Alterations or repairs may be made to any manufactured home or to its building service equipment without requiring the existing manufactured home or its building service equipment to comply with all the requirements of these provisions, provided the alteration or repair conforms to that required for new construction Appendix J of this code, and provided further that no hazard to life, health or safety will be created by such additions, alterations or repairs.
Alterations or repairs to an existing manufactured home, which are nonstructural and do not adversely affect any structural member or any part of the building or structure having required fire protection, may be made with materials equivalent to those of which the manufactured home structure is constructed, subject to approval by the building official.
Exception: The installation or replacement of glass shall be required for new installations.
Minor additions, alterations and repairs to existing building service equipment installations may be made in accordance with the codes in effect at the time the original installation was made, subject to the approval of the building official, and provided such additions, alterations and repairs will not cause the existing building service equipment to become unsafe, insanitary or overloaded. Building service equipment lawfully in existence at the time of the adoption of this code may have their use, maintenance and repair continued provided that such use, maintenance and repair is in accordance with the original design and no hazard to life, health or property has been created by such building service equipment.
The use or occupancy of any existing manufactured home shall not be changed unless such change in use or occupancy is made to conform to all applicable provisions of this code. Upon any change in use or occupancy, the manufactured home shall cease to be classified as such within the intent of these provisions.
The use or occupancy of any existing manufactured home shall not be changed unless evidence satisfactory to the building official is provided to show compliance with all applicable provisions of the codes adopted by this jurisdiction such change in use or occupancy is made to conform to all applicable provisions of this code. Upon any change in use or occupancy, the manufactured home shall cease to be classified as such within the intent of these provisions. All new and existing manufactured homes and their building service equipment, shall be maintained in a safe and sanitary condition. All devices or safeguards that are required by applicable codes or by the Manufactured Home Standards shall be maintained in conformance with the code or standard under which it was installed. The owner or the owner's designated agent shall be responsible for the maintenance of manufactured home and their accessory buildings, structures, and building service equipment. To determine compliance with this subsection, the building official may cause any manufactured home or their accessory building, structure, or building service equipment to be re-inspected.
- The statement: "This manufactured home is designed to comply with the federal mobile home construction and safety standards in force at the time of manufacture."
- Reference to the structural zone and wind zone for which the home is designed.
- Data relative to the heating and insulation zone and outdoor design temperature.
- Structurally sound;
- Free of heating and electrical system hazards.
ACCESSORY BUILDING. Any building or structure, or portion thereto, located on the same property as a manufactured home, which does not qualify as a manufactured home as defined herein.
BUILDING SERVICE EQUIPMENT. Refers to the plumbing, mechanical and electrical equipment, including piping, wiring, fixtures and other accessories which provide sanitation, lighting, heating, ventilation, cooling, fire protection and facilities essential for the habitable occupancy of a manufactured home or accessory building or structure for its designated use and occupancy.
DESIGN APPROVAL PRIMARY INSPECTION AGENCY (DAPIA). Refers to any state agency or other private organization that has been accepted by the Secretary of HUD, in accordance with the requirements the Manufactured Home Standards, to evaluate and approve manufactured home design, quality control procedures, and installation manuals.
HUD. The United States Department of Housing and Urban Development.
INSTALLATION INSTRUCTIONS. Means DAPIA approved instructions provided by the home manufacturer that accompany each manufactured home and detail the home manufacturer requirements for support and anchoring systems and other work completed at the installation site.
MANUFACTURED HOME. A structure transportable in one or more sections which that, in the traveling mode, is 8 body feet (2438 body mm) or more in width or 40 body feet (12192 body mm) or more in length or, when erected on site, is 320 or more square feet (3029.7m2) minimum, and which that is was built on or after June 15, 1976, on a permanent chassis and designed to be used as a dwelling with or without a permanent foundation when connected to the required utilities, and includes the plumbing, heating, air-conditioning and electrical systems contained therein; except that such term shall include any structure which meets all the requirements of this paragraph, except the size requirements and with respect to which the manufacturer voluntarily files a certification required by the Secretary of the U.S. Department of Housing and Urban Development (HUD) and complies with the standards established under this title.. The term "manufactured home" shall also include any structure that meets all the requirements of this definition except the size requirements and with respect to which the manufacturer voluntarily files a certification required by the federal department of housing and urban development and complies with the standards established under the national manufactured housing construction and safety act of 1974, as amended. The term "manufactured home" shall not include any self-propelled recreational vehicle. For mobile homes built prior to June 15, 1976, a A label certifying compliance with the Standard for Mobile Homes, NFPA 501, ANSI 119.1, in effect at the time of manufacture, is required is deemed acceptable. For the purpose of these provisions, a mobile home shall be considered a manufactured home.
MANUFACTURED HOME INSTALLATION (AND SETTING). Construction which is required for the installation of a manufactured home, including the construction of the foundation system, required structural connections thereto and the installation of on-site water, gas, electrical and sewer systems and connections thereto which are necessary for the normal operation of the manufactured home.
MANUFACTURED HOME STANDARDS. The Manufactured Home Construction and Safety Standards as promulgated by the HUD United States Department of Housing and Urban Development.
MANUFACTURER’S CERTIFICATION LABEL. The permanent label that is required by the Manufactured Home Standards to be affixed to each transportable section of each manufactured home.
MOBILE HOME. A moveable or portable dwelling unit that was built prior to June 15, 1976, and designed and constructed to be towed on its own chassis, composed of frame and wheels, connected to utilities, and designed and constructed without a permanent foundation for year-round living, excluding travel trailers.For the purpose of these provisions, a mobile home shall be considered a manufactured home.
PRIVATELY OWNED (NONRENTAL) LOT. A parcel of real estate outside of a manufactured home rental community (park) where the land and the manufactured home to be installed thereon are held in common ownership.
An addition made to a manufactured home, as defined in these provisions, shall comply with these provisions.
1. Identify and describe the work to be covered by the permit for which application is made.
2. Describe the land on which the proposed work is to be done by legal description, street address or similar description that will readily identify and definitely locate the proposed building or work.
3. Indicate the use or occupancy for which the proposed work is intended.
4. Be accompanied by plans, diagrams, computations and specifications, and other data as required in Section AE302.2.
5. Be accompanied by a soil investigation when required by Section AE502.2.
6. State the valuation of any new building or structure; or any addition, remodeling or alteration to an existing building.
7. Be signed by the permittee, or permittee's authorized agent, who may be required to submit evidence to indicate such authority.
8. Give such other data and information as may be required by the building official. Manufactured homes and accessory buildings shall be located on the property in accordance with Section R302.1 of this code or any other law or regulation regarding separation distances, whichever is more restrictive.
Where no unusual site conditions exist, the building official may accept approved standard foundation plans and details in conjunction with the manufacturer's approved installation instructions without requiring the submittal of engineering calculations.
When the building official issues the permit where plans are required, the building official shall endorse in writing or stamp the plans and specifications APPROVED. Such approved plans and specifications shall not be changed, modified or altered without authorization from the building official, and all work shall be done in accordance with the approved plans.
The issuance of a permit based on plans, specifications and other data shall not prevent the building official from thereafter requiring the correction of errors in said plans, specifications and other data, or from preventing building operations being carried on thereunder when in violation of these provisions or of any other ordinances of this jurisdiction.
Any permittee holding an unexpired permit may apply for an extension of the time within which work may commence under that permit when the permittee is unable to commence work within the time required by this section for good and satisfactory reasons. The building official may extend the time for action by the permittee for a period not exceeding 180 days upon written request by the permittee showing that circumstances beyond the control of the permittee have prevented action from being taken. No permit shall be extended more than once.
When permit fees are to be based on the value or valuation of the work to be performed, the determination of value or valuation under these provisions shall be made by the building official. The value to be used shall be the total value of all work required for the manufactured home installation plus the total value of all work required for the construction of accessory buildings and structures for which the permit is issued, as well as all finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems and any other permanent equipment which is a part of the accessory building or structure. The value of the manufactured home itself shall not be included.
The building official shall not authorize the refunding of any fee paid, except upon written application by the original permittee not later than 180 days after the date of the fee payment.
It shall be the duty of the permit applicant to cause the work to be accessible and exposed for inspection purposes. Neither the building official nor this jurisdiction shall be liable for expense entailed in the removal or replacement of any material required to allow inspection.
It shall be the duty of the person requesting any inspections required, either by these provisions or other applicable codes, to provide access to and means for proper inspection of such work.
1. Foundation inspection: To be made after excavations for footings are completed and any required reinforcing steel is in place. For concrete foundations, any required forms shall be in place prior to inspection. All materials for the foundation shall be on the job, except where concrete from a central mixing plant (commonly termed "transit mixed") is to be used, the concrete materials need not be on the job. Where the foundation is to be constructed of approved treated wood, additional framing inspections as required by the building official may be required.
2. Concrete slab or under-floor inspection: To be made after all in-slab or under-floor building service equipment, conduit, piping accessories and other ancillary equipment items are in place but before any concrete is poured or the manufactured home is installed.
3. Anchorage inspection: To be made after the manufactured home has been installed and permanently anchored.
When required by the code enforcement official, the soil classification design bearing capacity and lateral pressure shall be shown on the plans.
Piers and bearing walls shall be supported on masonry or concrete foundations or piles, other systems identified in the installation instructions included in the consumer manual(s) provided by the manufacturer, or other alternative foundation systems of sufficient capacity to support all loads and designed by a licensed design professional.
All cast-in-place concrete shall have a specified minimum compressive strength of 3,000 psi (20,684 kPa) at 28 days.
Any alternative foundation shall be designed and constructed to conform to the applicable provisions of the “Model Manufactured Home Installation Standards” (24 CFR 3285).
Under-floor spaces between the lowest member of the main frame and the finish grade under all areas of the home shall have a 6-mil polyethylene ground vapor barrier placed on the ground surface covering the entire area under the home. Under-floor spaces shall be ventilated; the minimum net area of ventilation opening shall be not less than 1 square foot (0.0929 m2) for each 1,500 square feet (140 m2) of under-floor space area. One ventilation opening shall be within 3 feet (914 mm) of each corner of the home. Dryer vents and combustion air inlets must pass through the skirting to the outside. Water discharge from furnace, air conditioning, and water heater drains must pass through the skirting to the outside and be directed away from the under-floor space.
Under-floor access openings shall be provided. Such openings shall be not less than 18 inches (457 mm) in width by 24 inches (610mm) in height, not less than 3 square feet (0.279 m2) in area, and shall be located so that any water supply and sewer drain connections located under the home are accessible.
Exception: When specifically authorized by the building official, foundation and anchorage systems which are constructed in accordance with the methods specified in Section AE600 of these provisions, or in the HUD, Permanent Foundations for Manufactured Housing, 1984 Edition, Draft, shall be deemed to meet the requirements of this appendix.
The classification shall be based on observation and any necessary tests of the materials disclosed by borings or excavations made in appropriate locations. Additional studies may be necessary to evaluate soil strength, the effect of moisture variation on soil-bearing capacity, compressibility and expansiveness.
When required by the building official, the soil classification design-bearing capacity and lateral pressure shall be shown on the plans.
Piers and bearing walls shall be supported on masonry or concrete foundations or piles, or other approved foundation systems which shall be of sufficient capacity to support all loads.
Under-floor spaces shall be ventilated with openings as specified in this code. If combustion air for one or more heat-producing appliance is taken from within the under-floor spaces, ventilation shall be adequate for proper appliance operation.
Under-floor access openings shall be provided. Such openings shall be not less than 18 inches (457 mm) in any dimension and not less than 3 square feet (0.279 m2) in area, and shall be located so that any water supply and sewer drain connections located under the manufactured home are accessible.
Skirting shall be installed in accordance with the skirting manufacturer's installation instructions. Skirting shall be adequately secured to ensure stability, minimize vibration and susceptibility to wind damage, and compensate for possible frost heave.
Exception: The building official may waive the submission of engineering calculations if it is found that the nature of the work applied for is such that engineering calculations are not necessary to show conformance to these provisions.
1. A prefabricated load-bearing device that is listed and labeled for the intended use.
2. Mortar shall comply with ASTM C 270, Type M, S or N; this may consist of one part Portland cement, one-half part hydrated lime and four parts sand by volume. Lime shall not be used with plastic or waterproof cement.
3. A cast-in-place concrete pier with concrete having specified compressive strength at 28 days of 2,500 pounds per square inch (17 225 kPa).
Alternative materials and methods of construction may be used for piers which have been designed by an engineer or architect licensed by the state to practice as such.
Caps and leveling spacers may be used for leveling of the manufactured home. Spacing of piers shall be as specified in the manufacturer's installation instructions, if available, or by an approved designer.
1. Except for corner piers, piers 36 inches (914 mm) or less in height may be constructed of masonry units, placed with cores or cells vertically. Piers shall be installed with their long dimension at right angles to the main frame member they support and shall have a minimum cross-sectional area of 128 square inches (82 560 mm2). Piers shall be capped with minimum 4-inch (102 mm)solid masonry units or equivalent.
2. Piers between 36 and 80 inches (914 and 2032 mm) in height and all corner piers greater than 24 inches (610 mm) in height shall be at least 16 inches by 16 inches (406 mm by 406 mm) consisting of interlocking masonry units and shall be fully capped with minimum 4-inch (102 mm) solid masonry units or equivalent.
3. Piers greater than 80 inches (2032 mm) in height may be constructed in accordance with the provisions of Item 2, provided the piers shall be filled solid with grout and reinforced with four continuous No. 5 bars. One bar shall be placed in each corner cell of hollow masonry unit piers or in each corner of the grouted space of piers constructed of solid masonry units.
4. Cast-in-place concrete piers meeting the same size and height limitations of Items 1, 2 and 3 may be substituted for piers constructed of masonry units.
Manufactured ground anchors shall be listed and installed in accordance with the terms of their listing and the anchor manufacturer's instructions, and shall include the means of attachment of ties meeting the requirements of Section AE605. Ground anchor manufacturer's installation instructions shall include the amount of preload required and load capacity in various types of soil. These instructions shall include tensioning adjustments which may be needed to prevent damage to the manufactured home, particularly damage that can be caused by frost heave. Each ground anchor shall be marked with the manufacturer's identification and listed model identification number which shall be visible after installation. Instructions shall accompany each listed ground anchor specifying the types of soil for which the anchor is suitable under the requirements of this section.
Each approved ground anchor, when installed, shall be capable of resisting an allowable working load at least equal to 3,150 pounds (14 kN) in the direction of the tie plus a 50-percent overload [4,725 pounds (21 kN) total] without failure. Failure shall be considered to have occurred when the anchor moves more than 2 inches (51 mm) at a load of 4,725 pounds (21 kN) in the direction of the tie installation. Those ground anchors which are designed to be installed so that loads on the anchor are other than direct withdrawal shall be designed and installed to resist an applied design load of 3,150 pounds (14 kN) at 40 to 50 degrees from vertical or within the angle limitations specified by the home manufacturer without displacing the tie end of the anchor more than 4 inches (102 mm) horizontally. Anchors designed for the connection of multiple ties shall be capable of resisting the combined working load and overload consistent with the intent expressed herein.
When it is proposed to use ground anchors and the building official has reason to believe that the soil characteristics at a given site are such as to render the use of ground anchors advisable, or when there is doubt regarding the ability of the ground anchors to obtain their listed capacity, thebuilding official may require that a representative field installation be made at the site in question and tested to demonstrate ground-anchor capacity. The building official shall approve the test procedures.
Anchoring systems shall be so installed as to be permanent. Anchoring equipment shall be so designed to prevent self-disconnection with no hook ends used.
Wood floor support systems shall be fixed to perimeter foundation walls in accordance with provisions of this code. The minimum number of ties required per side shall be sufficient to resist the wind load stated in this code. Ties shall be as evenly spaced as practicable along the length of the manufactured home with the distance from each end of the home and the tie nearest that end not exceeding 8 feet (2438 mm). When continuous straps are provided as vertical ties, such ties shall be positioned at rafters and studs. Where a vertical tie and diagonal tie are located at the same place, both ties may be connected to a single anchor, provided the anchor used is capable of carrying both loads. Multiple-section manufactured homes require diagonal ties only. Diagonal ties shall be installed on the exterior main frame and slope to the exterior at an angle of 40 to 50 degrees from the vertical or within the angle limitations specified by the home manufacturer. Vertical ties which are not continuous over the top of the manufactured home shall be attached to the main frame.
|ASTM C 270‒04||Specification for Mortar for Unit |
|NFPA 501‒03||Standard on Manufactured |