A STUDY OF THE DEVELOPMENT OF A STATIC LOAD TEST FACILITY TO BE ESTABLISHED AT THE PROTECTIVE STRUCTURES DEVELOPMENT CENTER FORT BELVOIR, VIRGINIA
WISS JANNEY ELSTNER AND ASSOCIATES DES PLAINES IL
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The report contains a review of the state of knowledge concerning inelastic behavior characteristicsultimate load capacity of reinforced concrete floorroof systems. Yield line theory normally predicts ultimate load less than tests show for systems that have perimeter restraint. There have been very few tests of full-scale buildings to the collapse stage. Most of what is known today about behavior of two-way floor systems is based on structural systems tested at less than full scale. The report concludes that less than full-scale testing is practicable. Models scaled down to 128 are feasible, best scale seems to be between 18 to 115. The report discusses materials, fabrication and loading techniques in setting up a model test program. The report outlines a program in detail to test three-dimensional frameworks of conventional reinforced concrete floor and roof systems. The first step is to establish proper correlation between mortar models and full-scale prototypes on their principal behavior considerations shear, flexural strength, bond and column action using mortar models of single elements. After correlation problems are resolved, the program of testing three-dimensional frameworks can be carried out. Building frames are detailed for such typical floor systems as flat slab, flat plate, two-way slabs, pan joists systems, waffle slabs and precast prestressed concrete. The report contains a bibliography of published articles dealing with ultimate strength of two-way and three-way systems and various theories that have been proposed. A review of papers dealing with structural model analysis is included.
- Ceramics, Refractories and Glass
- Structural Engineering and Building Technology
- Test Facilities, Equipment and Methods