- Author
- Gustaferro, A. H. | Abrams, M. S.
- Title
- Fire Tests of Concretes Two-Way Joist Floors.
- Coporate
- Portland Cement Assoc., Skokie, IL
- Report
- Research and Development Bulletin, 1971, 10 p.
- Keywords
- floors | concrete slabs | fire resistance tests | reinforced concretes | thermal expansion
- Identifiers
- two way joist floors; restraints; waffle flat slabs
- Abstract
- Fire tests (ASTM E 119-67) were conducted on two concrete waffle flat-slab floor specimens. The 14x18-ft specimens were made with carbonate-aggregate concrete. Joists were 6 in. wide and 8 in. deep (nominal) and the main domes were 30x30 in. in plan. One specimen had a 3 1/2-in. deck slab and the other, a 5-in. slab. Specimens were supported at the four corners. Data on unexposed surface temperature, deflection, expansion, thermal thrust, and steel temperatures during the tests are given. Tests were stopped after 4 hours with no sign of structural failure. Fire endurance were determined by the criteria for temperature rise of the top surface.