- Author
-
Son, B. C.
- Title
- Fire Endurance Test of a Wood Stud Interdwelling Double Wall Construction. Final Report.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Sponsor
- Department of Housing and Urban Development, Washington, DC
- Report
-
NBSIR 73-169
April 1973
16 p.
- Distribution
- Available from National Technical Information Service
- Contract
- IAA-H-16-70
- Keywords
-
fire endurance
|
fire tests
|
Operation Breakthrough
- Abstract
- As a part of the evaluation of a housing system proposed under Operation Breakthrough a standard fire endurance test was performed on a double wall construction represting a non-load-bearing interdwelling wall for single family attachd housing. The test was conducted at the National Bureau of Standards and followed the requirements of ASTM E 119, Fire Tests of Building Construction and Materials. The double wall which represented an interdwelling separation between two adjacent modules, was made up of two identical parallel walls separated by a 1/2 inch air space. Each wall contained two layers of fire-rated gypsum board attached to wood stud framing on the dwelling room side. Since the test assembly represented a non-bearing wall, no load was applied during this test. The failure of the first (fire exposed) wall occurred at 1 hour:17 minutes when a joint in the second layer of gypsum board opened to allow passage of flame. The second (unexposed) wall failed at 2 hr. 19 min. when the temperature rise at one point on the exposed surface exceeded the maximum allowable.