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Federal Register / Vol. 86, No. 7 / Tuesday, January 12, 2021 / Rules and Regulations
structure to the homes support and anchoring systems.
b The design, including the homes installation instructions, must specify the following home and carport characteristics including maximum width, maximum sidewall height, live and dead loads, and other design limitations or restrictions.
1 Alternatively, the manufacturer may provide, by design and home installation instructions, the maximum live and dead loads, and the applied loading locations, that the home is designed to resist from the carport, and other design limitations or restrictions.
2 Reserved.
c Homes may be designed with a factory-installed host beam i.e., ledger board or specific roof truss rail for the attachment of the carport to the exterior wall of the home. The host beam i.e., ledger board must be designed to transmit the appropriate live and dead loads at the interface between the carport and the manufactured home. In cases where the carport is designed to be supported by the roof truss overhang, the roof trusses must be designed to support the additional live and dead loads from the carport.
1 Any portion of the host beam i.e., ledger board and all fasteners exposed to the weather shall be protected in accordance with 3280.307.
2 Reserved.
d To ensure that the attachment of the carport does not interfere with roof or attic ventilation, the manufacturer must provide specific instructions to ensure continued compliance with the manufactured home roof or attic ventilation requirements in accordance with 3280.504d.
e Installation instructions shall be provided by the home manufacturer that identify acceptable attachment locations, indicate design limitations for the attachment of the carport including acceptable live and dead loads for which the home has been designed to accommodate, and provide support and anchorage designs as necessary to transfer all imposed loads to the ground in accordance with 3285.301 and 3285.401 of this chapter.
1 The manufacturer must ensure that any anchoring system designs incorporating anchorage to resist combined shear wall and carport uplift loads are evaluated for adequacy to resist the combined loads, taking into consideration the limitations of the ground anchor test and certification.
2 Reserved.
f A site-built, self-supported carport is considered an add-on, as provided by 3282.8j1, that does not affect the ability of the manufactured home to
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comply with the standards. The design and construction of the carport is subject to state and or local authorities having jurisdiction.
16. In 3280.305, revise paragraphs a, e1, g6, and h5 to read as follows:

must be tight fitted against all penetrations.
h
5 Portions of roof assemblies, including, but not limited to, dormers, gables, crickets, hinged roof sections, sheathing, roof coverings, underlayments, flashings, and eaves and 3280.305 Structural design requirements. overhangs are permitted to be assembled a General. Each manufactured home and installed on site in accordance with must be designed and constructed as a 24 CFR part 3282, subpart M, provided completely integrated structure capable that the requirements in paragraphs of sustaining the design load h5i through v of this section are requirements of this part and must be met.
capable of transmitting these loads to i Approved installation instructions stabilizing devices without exceeding must be provided that include the allowable stresses or deflections.
requirements for the following items:
Roof framing must be securely fastened A Materials, installation, and to wall framing, walls to floor structure, structural connections complying with and floor structure to chassis to secure this section;
and maintain continuity between the B Installation and fastening of floor and chassis, so as to resist wind sheathing and roof coverings;
overturning, uplift, and sliding as C Installation of appliance vent imposed by design loads in this part. In systems in accordance with 3280.710;
multistory construction, each story must D
Installation of plumbing vents as be securely fastened to the story above required by 3280.611; and and/or below to provide continuity and E Installation of attic ventilation in resist design loads in this part.
accordance with 3280.504c.
Uncompressed finished flooring greater ii The installation instructions than 18 inch in thickness must not specified in paragraph h5i of this extend beneath load-bearing walls that section must include drawings, details, are fastened to the floor structure.
and instructions as necessary to assure

that the on-site work complies with the e
approved design.
1 Roof framing must be securely iii The installation instructions fastened to wall framing, walls to floor structure, and floor structure to chassis, specified in paragraph h5i of this section must provide for inspection of to secure and maintain continuity the work at the installation site. As between the floor and chassis in order necessary to ensure conformance, to resist wind overturning, uplift, and inspection panels may be required, or sliding, and to provide continuous load inspections may need to occur in stages paths for these forces to the foundation that assure inspections are performed or anchorage system. The number and before any work is concealed. Such type of fasteners used must be capable inspection procedures shall be of transferring all forces between addressed in the approved installation elements being joined. In multistory instructions.
construction, each story must be iv Temporary weather protection securely fastened to the story above must be provided per 3280.307e.
and/or below to provide continuity and resist design loads in this section.

17. Amend 3280.307 by adding g
paragraph e to read as follows:
6 Bottom board material with or 3280.307 Resistance to elements and without patches must meet or exceed the level of 48 inch-pounds of puncture use.

resistance as tested by the Beach e Multi-section and attached Puncture Test in accordance with Standard Test Methods for Puncture and manufactured homes see subpart K of Stiffness of Paperboard, and Corrugated this part are not required to comply with the factory installation of weatherand Solid Fiberboard, ASTM D781
resistant exterior finishes for those areas 1968 Reapproved 1973 incorporated by reference, see 3280.4. The material left open for field connection of the sections provided the following must be suitable for patches and the conditions are satisfied:
patch life must be equivalent to the material life. Patch installation 1 Temporary weather protection for instruction must be included in the exposed, unprotected construction is manufactured home manufacturers provided in accordance with methods to instructions. The bottom board material be included in the approved design.

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