- Author
-
Portland Cement Associaiton
- Title
- Simulation of Realistic Thermal Restraint During Fire Tests of Floor and Roof Assemblies. Second (2nd) Semiannual Progress Report.
- Coporate
- Portland Cement Assoc., Skokie, IL
- Report
-
2nd Semiannual Progress Report
June 1972
18 p.
- Keywords
-
floors
|
roofs
|
fire tests
|
simulation
|
concrete slabs
- Abstract
- During the second semiannual period ten of the thirteen concrete slab specimens that comprise the test program of Phase 1 were completed. Two 3x3-ft., one 6x6-ft. and seven 9x9-ft. specimens were included. Seven flat slabs, one flat slab with edge beams and two ribed slabs comprised the ten tests. Horizontal and vertical temperature distributions, expansions, and deflections were measured during the heating period. The formation of cracks was observed, recorded and mapped for each test. Data reduction work is in progress. Typical deflections, and temperature distribuitons are shown for one of the 9x9-ft. flat slabs. The effect of such variables as percentage of steel, ratio of heated to unheated areas, and non-symmetrical heating on the expansion of the heated part of the slab was evaluated. The remaining three fire tests will be completed during the early part of the final period. Considerable progress was made in the development of the one-dimensional heat flow computer program and the finite element computer program for the analytical studies of Phase 2 of the project. Major subroutines such as heat flow, numbering sequence of elements, displacement function, assembly of structural matrix, solution of simultaneous equations, determination of stresses, and thermal properties of materials are now operational. The remainder of the computer program development work and computer analysis of the test data will be completed during the final period.