NIST Time|NIST Home|About NIST|Contact NIST

HomeAll Years:AuthorKeywordTitle2005-2010:AuthorKeywordTitle

Fire Endurance Test of an Interdwelling Double Wall Construction of Paper Honeycomb and Gypsum Board. Final Report.


pdf icon Fire Endurance Test of an Interdwelling Double Wall Construction of Paper Honeycomb and Gypsum Board. Final Report. (1970 K)
Son, B. C.

NBSIR 73-166; 19 p. April 1973.

Sponsor:

Department of Housing and Urban Development, Washington, DC
Order number: PB-222297

Keywords:

fire endurance; fire tests; glass reinforced polyester resins; Operation Breakthrough

Abstract:

As a part of the evaluation of a housing system proposed under Operation BREAKTHROUGH, a fire endurance test was performed at the National Bureau of Standards on a double wall assembly intended as an interdwelling separation for single family attached housing. Each wall of the assembly contained a core of paper honeycomb surfaced on both sides with glass fabric impregnated with polyester resin, and protective layers of gymsum board. The test method was generally in accordance with the requirements of ASTM E 119, Fire Tests of Building Construction and Materials. The applied live load was 636 p1f on each panel and the results of this test are valid only for walls of similar construction loaded at or below the stress levels developed by this loading. The fire endurance of the first (fire-exposed) wall panel was 65 min:30 sec, based on flame penetration through cracks and openings formed on the back face of the first wall. The overall fire resistance of the double wall assembly was 79 minutes when pieces of the structural glass fabric of the front face of the second wall were observed falling into the furnace.