Fire Performance of Selected Residential Floor Constructions Under Room Burnout Conditions. Interim Report.
Fire Performance of Selected Residential Floor
Constructions Under Room Burnout Conditions. Interim
Report.
(2552 K)
Fang, J. B.
NBSIR 80-2134; 79 p. December 1980.
Sponsor:
Department of Housing and Urban Development, Washington,
DC
Available from:
: National Technical Information Service
(NTIS), Technology Administration, U.S. Department of
Commerce, Springfield, VA 22161.
Telephone:
1-800-553-6847 or 703-605-6000;
Fax: 703-605-6900; Rush
Service (Telephone Orders Only) 800-553-6847;
Website:
http://www.ntis.gov
Order number: PB81-144404
Keywords:
fire endurance; fire tests; flame through; floors;
furniture; interior finishes; joists; room fires;
steels; wood
Abstract:
A series of seven large-scale room burnout fire tests
was conducted with a set of selected residential
floor-ceiling assemblies to provide data on the
performance of the assemblies; these will be compared
with the results in future tests on the same
constructions in a fire endurance furnace. Four
wood-frame and three light gage steel-frame,
load-bearing assemblies, each measuring 3.7 x 3.7 m in
size, were exposed from the underside to a fire
environment produced from the burning of typical
furniture and interior finish materials in a room. the
fire resistance periods based on flame-through of floor
assembly and structural failure of floor joists varied
from 10 to 12 minutes for floors with unprotected wood
joists and was 4 minutes or less for floors with
unprotected steel joists. The addition of a 12.7 mm
thick gypsum board ceiling as a protective layer
increased the fire resistance time of the steel joisted
floor assembly approximately 12 minutes.
