- Author
-
Son, B. C.
- Title
- Fire Endurance Test of a Roof/Ceiling Construction of Paper Honeycomb and Gypsum Board. Final Report. Revision of NBS-10405.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Sponsor
- Department of Housing and Urban Development, Washington, DC
- Report
-
NBSIR 73-167,
January 1973,
16 p.
- Distribution
- Available from National Technical Information Service
- Contract
- IAA-H-16-70
- Keywords
-
fire endurance
|
fire tests
|
glass reinforced polyester resins
|
Operation Breakthrough
- Abstract
- In a program of evaluation of various housing systems proposed under Operation Breakthrough, a fire endurance test was performed at the National Bureau of Standards on a roof/ceiling assembly consisting of a paper honeycomb structural core surfaced both sides with glass-fabric impregnated with polyester resin and outer layers of gypsum board. The test method was generally in accordance with the requirements of ASTM E 119, Fire tests of Building Construction and Materials, for loadbearing roof assemblies. The applied load was 15.9 psf and the test results are valid only for roof/ceilings of similar construction loaded at or below the stress level developed by this loading. Under a loading of 15.9 psf on a 13 ft. 5 in. span, which produced a stress equivalent to the application of 20 psf on a 12 ft. span, failure occurred by flame-through of the roof/ceiling assembly at 37 min. 13 sec.