- Author
-
Yokel, Felix Y.
- Title
- Report on Study of Evaluation Criteria for Floors Under Concentrated Load. Final Report.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
NBS 10 317
1970
- Distribution
- AVAILABLE FROM: National Archives, Civilian Records, Room 2800, 8601 Adelphia Road, College, Park, MD 20740-6001, Telephone: 301-713-7230
- Keywords
-
design criteria, floors; floors, loads (forces); residential buildings; plywood; design standards; building codes; statis loads; joists; flexural strength
- Identifiers
- breakthrough operation; load concentration; load distribution
- Abstract
- Five conventional plywood floor systems, constructed in accordance with the requirements of FHA 'Minimum Property Standards' were tested under concentrated loads in order to determine their performance characteristics. In 24 out of 26 tests the performance of the floor systems exceeded that required by the Operation BREAKTHROUGH Guide Criteria. No change in Criterion D.1.4.1(b) is recommended, but it is proposed that the term 'residual indentation' be changed to 'residual deflection' and that a loading rate of 1/2 lb per second be specified in the test. It is also recommended that an additional investigation be conducted in order to develop a test method for the determination of sustained-load capacity and to study occupancy-generated concentrated loads. (Author)