Subject: 10660/Code/10-8/ManufacturedHomes Date: Mon, 27 Feb 1989 12:20:00 -0500 ORDINANCE NO. 10660 AN ORDINANCE TO AMEND CHATTANOOGA CITY CODE, PART II, SECTION 10-8, RELATIVE TO TIE-DOWN, SKIRTING, LANDING AND PORCH REQUIREMENTS OF MANUFACTURED HOMES. _______________________ WHEREAS, the City Council of the City of Chattanooga is concerned about safety standards of all housing within the City of Chattanooga in light of severe damage to certain homes in this community following violent tornado winds which occurred in this community during the Spring of 1997; and WHEREAS, the City Council of the City of Chattanooga desires to insure the protection of all of its citizens from unnecessary danger and destruction of their homes in this community by adopting certain minimum tie-down, skirting, landing and porch requirements for all residential structures; BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF CHATTANOOGA, TENNESSEE, That: Section 1. Chattanooga City Code, Part II, Section 10-8, be and the same is hereby amended to include a new Section 10-8 entitled Tie-Down, Skirting, Landing and Porch Requirements of Manufactured Homes as follows: Section 10-8: Tie-Down, Skirting, Landing and Porch Requirements of Manufactured Homes: The following requirements set forth in this Code Section shall apply to all new and used manufactured homes installed within the City of Chattanooga following the effective date of this Ordinance: (A) No manufactured home may be installed on any lot in the City of Chattanooga unless it complies with all provisions of the National Manufactured Home Construction and Safety Standards Act of 1974 (42 U.S.C. Section 5401, et seq.); the Uniform Standards Code for Manufactured Homes and Recreational Vehicles as set forth at T.C.A. Section 68-126-201, et seq.; the Tennessee Modular Building Act, at T.C.A. Section 68-126-301; the Tennessee Manufactured Home Anchoring Act at T.C.A. Section 68-126-401; and the minimum housing standards set forth at Chattanooga City Code Section 21-1, et seq. (B) For purposes of this Code, a "manufactured home" shall be defined as a structure, transportable in one or more sections, which is eight body feet (2.4 meters) or more in width and is thirty-two (32) body feet (9.75 meters) or more in length and which is built on a permanent chassis, and designed to be used as a dwelling with or without permanent foundation, and connected to the required utilities, and includes plumbing, heating, air conditioning, and electrical systems contained therein. (C) All manufactured home units are required to bear the label or seal of compliance with Federal Manufactured Home Construction and Safety Standards issued by an agency approved by the Secretary of the Department of Housing and Urban Development and a certificate, seal or other evidence of compliance with State uniform standards for manufactured homes required by T.C.A. Section 68-126-207. (D) All manufactured homes are required to have diagonal ties to restrict the unit from being pushed from its piers. These diagonal ties are required to be installed to restrict overturning. Additional over-the-top tie downs to restrict overturning may also be required by some manufactured home installation instructions. (1) Piers or load-bearing supports or devices shall be designed and constructed to evenly distribute the loads. Piers shall be securely attached to the frame of the manufactured home or shall extend at least six (6) inches (152 mm) from the centerline of the frame member. Manufactured load-bearing supports or devices shall be listed or approved for the use intended, or piers shall be constructed as follows: (i) Except for corner piers, piers less than forty (40) inches (1016 mm) high shall be constructed of masonry units, placed with cores or cells vertically. Piers shall be installed with their long dimensions perpendicular to the main (I-beam) frame member for supports and shall have a minimum cross-sectional area of 119 square inches (0.077 m squared). Piers shall be capped with a minimum 2-inch (51 mm) solid masonry unit or concrete cap, or equivalent. (ii) Piers between 40 and 80 inches (1016 and 2032 mm) high and all corner piers over 24 inches (610 mm) shall be at least 16 X 16 inches (406 X 406 mm) consisting of interlocking masonry units and shall be fully capped with a minimum 4-inch (102 mm) solid masonry unit or equivalent. (iii) Piers over 80 inches (2032 mm) high shall be constructed in accordance with the provisions of paragraph ii above, 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. (iv) Cast-in-place concrete piers meeting the same size and height limitations of paragraphs i, ii and iii above may be substituted for piers constructed of masonry units. (v) All piers shall be constructed on footings of solid concrete not less than 16 inches wide by 8 inches in thickness (16"X8") and continuous between all piers installed perpendicular to the main (I-beam) frame members. E. Piers shall be located in accordance with the manufactured home installation instructions. If the manufactured home installation instructions are not available for a used home, piers for single section homes are to be placed under each longitudinal main frame member not to exceed 8 feet (2438 mm) on-center for homes that are not over 14 feet (4267 mm) wide or less and 6 ft (1829 mm) on center for homes that are not over 14 ft (4267 mm) wide. Piers for multi-section homes are to be placed under each longitudinal main frame member not to exceed 6 feet (1829 mm) on-center spacing. For used multi-section homes, piers are to be placed under the center marriage line within one foot at each end, under ridge beam support columns, and under both sides of openings at the marriage line greater than 12 feet (3657 mm). For all homes, exterior doors shall have piers directly under both sides of the door openings. Where practical for all homes, end piers shall be placed within 1 foot (305 mm) of the ends of the main frame. When the location and spacing of wheels and axles or other structural members of home frames or undercarriages prevent spacing of piers on 8 or 6 feet (2438 or 1829 mm) centers, the spacing shall be as near 8 or 6 ft (2438 or 1829 mm) maximum spacing as practicable in the area of the obstruction. Piers shall be placed under other concentrated loads such as porch posts, bay window overhangs, and masonry-faced fireplaces on floor overhangs. Units that exceed 16 feet (4877 mm) in width shall have perimeter piers under the sidewalls every 6 feet (1829 mm) and at each corner. Perimeter piers shall be under the intersection of a perimeter joist and a transverse joist or shall be under a 4X4-inch (102 X 102 mm) brace that supports at least two floor joists. F. The City of Chattanooga further adopts by reference all manufactured home tie down standards set forth in Appendix H to the 1994 Standard Building Code (as amended) set forth at Sections H105.1, H105.2, H105.3, H105.4, H105.5, H106 and all subsections set forth therein, except where such provisions are contrary to the provisions of this Ordinance. Such provisions are incorporated by reference and shall be inspected by the building inspector. G. All manufactured homes installed after the effective date of this Ordinance shall be required to have masonry skirting covering all open space between the ground and the exterior wall on the perimeter of the manufactured home, not less than 6 inches wide or in such other width as may be required by the Standard Building Code based upon the heighths and widths of the masonry skirting. All masonry skirting shall be constructed on footings of poured in place concrete not less than 16 inches wide by 4 inches in thickness (16"X4") or as otherwise required by the Standard Building Code based upon the heighth and width of the masonry skirting. H. All manufactured homes shall further be required to be situated on any lot so that the front entrance to the manufactured home faces a City street. The owner or installer of a manufactured home shall be required to designate the front entrance to the Building Official before any installation may be approved. I. All manufactured homes shall further be required to have a minimum landing at every entrance of at least 4 feet by 4 feet (4' X 4'), with a covered porch over the front entrance. All landings shall be constructed and approved by the Building Official in accordance with all standards set forth in the 1994 Standard Building Code (as amended). The covered porch over the front entrance shall be constructed with a roof line of at least the same pitch as the remainder of the manufactured home. J. Should any court of competent jurisdiction declare any section, clause, or provision of this Ordinance to be unconstitutional, such decision shall affect only such section, clause or provision so declared unconstitutional, and shall not affect any other section, clause or provision of this Ordinance. 0C SECTION 2. BE IT FURTHER ORDAINED, That this Ordinance shall take effect two weeks from and after its passage, as provided by law. PASSED on Third and Final Reading January 20, 1998. /s/_________________________________ CHAIRPERSON APPROVED:__X___ DISAPPROVED: _______ DATE: January 22 , 1998. /s/_________________________________ MAYOR PAN:kac