- Author
-
Son, B. C.
|
Fang, J. B.
- Title
- Fire Spread on Exterior Walls Due to Flames Emerging from a Window in Close Proximity to a Reentrant Wall Corner. Final Report.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Sponsor
- Department of Housing and Urban Development, Washington, DC
- Report
-
NBSIR 73-266,
April 1973,
33 p.
- Distribution
- 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
- Keywords
-
fire spread
|
fire tests
|
ignition
|
Operation Breakthrouh
|
operation breakthrough
- Abstract
- As a part of the research program concerning the recommended criteria for fire safety in Operation BREAKTHROUGH, two full scale fire tests were performed on a mockup of a reentrant corner, i.e., the interior corner formed at the intersection of the exterior walls of adjacent buildings, such as townhouses and garden apartments. In each test, two wall specimens representing exterior walls were erected perpendicular to a wall containing a window opening into a fire room. One wall was located 1 foot east and the other one 5 feet west of the edges of the window. The objective of the reentrant corner fire test was to study the potential ignition and spread of fire from the room to an adjacent exterior combustible wall. In the first test, charring on the east wall, but no surface ignition was observed during the test. The peak temperature mreasured did not exceed 350 deg. C (660 deg. F). In the second test, surface ignition occurred on the east wall 9 minutes after the wood crib, representing the combustible contents of the room, was ignited. No significant changes were observed on the west wall during either test. The instantaneous heat flux incident on the east wall just prior to ignition and the total heat energy absorbed were estimated to be on the order of 1.0 W/cm(2) and 175 Joules/cm(2) respectively.