[Code of Federal Regulations]

[Title 24, Volume 5]

[Revised as of April 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 24CFR3280.206]



[Page 119-120]

 

                 TITLE 24--HOUSING AND URBAN DEVELOPMENT

 

 CHAPTER XX--OFFICE OF ASSISTANT SECRETARY FOR HOUSING--FEDERAL HOUSING 

        COMMISSIONER, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT

 

PART 3280_MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS--Table 

of Contents

 

                          Subpart C_Fire Safety

 

Sec.  3280.206  Firestopping.



    (a) Firestopping of at least 1-inch nominal lumber, \5/16\-inch 

thick gypsum board, or the equivalent, shall be provided to cut off 

concealed draft openings between walls and partitions, including furred 

spaces, and the roof or floors, so as to retard vertical movement of 

fire. In particular, such concealed spaces must be constructed so that 

floor-to-ceiling concealed spaces on one floor do not communicate with 

any concealed space on another floor, any concealed spaces in the floor, 

or any concealed space in the roof cavity. A barrier must be installed 

to prevent communication between adjacent concealed spaces.

    (1) Where the barrier is vertical, it must be made of exterior or 

interior covering(s) equivalent to that used on the nearest exposed wall 

surface; and

    (2) In all other cases, the barrier must be made of 1-inch nominal 

lumber, \5/16\-inch thick gypsum board, or the equivalent.

    (b) A space does not lose its character as a concealed draft opening 

if it is filled with insulation or other material or if it is blocked by 

a barrier other than as required by paragraph (a) of this section.



[[Page 120]]



    (c) All openings for pipes and vents and other penetrations in 

walls, floors, and ceilings of furnace and water heater spaces shall be 

tight-fitted or firestopped. Pipes, vents, and other penetrations are 

tight-fitted when they cannot be moved freely in the opening.



    Effective Date Note: At 70 FR 72042, Nov. 30, 2005, Sec.  3280.206 

was revised, effective May 30, 2006. For the convenience of the user, 

the revised text follows:



Sec.  3280.206  Fireblocking.



    (a) General. Fireblocking must comply with the requirements of this 

section. The integrity of all fireblocking materials must be maintained.

    (b) Fireblocking materials. Fireblocking must consist of the 

following materials:

    (1) Minimum one inch nominal lumber, \5/16\ inch thick gypsum board, 

or equivalent fire resistive materials; or

    (2) Other Listed or Approved Materials;

    (c) Fireblocking locations. (1) Fireblocking must be installed in 

concealed spaces of stud walls, partitions, and furred spaces at the 

floor and ceiling levels. Concealed spaces must not communicate between 

floor levels. Concealed spaces must not communicate between a ceiling 

level and a concealed roof area, or an attic space.

    (2) Fireblocking must be installed at the interconnection of a 

concealed vertical space and a concealed horizontal space that occurs:

    (i) Between a concealed wall cavity and the ceiling joists above; 

and

    (ii) At soffits, drop ceilings, cover ceilings, and similar 

locations.

    (3) Fireblocking must be installed around the openings for pipes, 

vents, and other penetrations in walls, floors, and ceilings of furnace 

and water heater spaces. Pipes, vents, and other penetrations that 

cannot be moved freely within their opening are considered to be 

fireblocked. Materials used to fireblock heat producing vent 

penetrations must be noncombustible or limited combustible types.