- Author
-
Ryan, J. V.
- Title
- Fire Tests of Precast Thin-Shell Concrete Roof Panels.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Sponsor
- Bureau of Yards and Docks, Washington, DC
- Report
-
NBS 4920
November 5, 1956
20 p.
- Distribution
- AVAILABLE FROM: National Archives, Civilian Records, Room 2800, 8601 Adelphia Road, College Park, MD 20740-6001, Telephone: 301-713-7230
- Keywords
-
fire tests; concretes; roofs; roofing (finishes); fire endurance
- Abstract
- Fourteen fire tests were made on precast thinshell concrete roof panels. The panels' cross-sections were channel shape. Some had intermediate transverse ribs; others did not. The panels for the first two tests were reinforced conventionally, the remainder had prestressed reinforcement. The last four panels had insulting underfaces. The observed fire endurances ranged from 6 min to 31 min.