Test of a Flat Slab Reinforced with Welded Wire Fabric

The behavior at various stages of loading of a flat slab reinforced with welded wire fabric is described. The design was based on the empirical design method of ACI 318-56. The test structure was loaded at 16 points in each of its nine panels to simulate a uniform load. From three of a series of tests conducted at different load levels and with different combinations of loaded panels, representative load-deflection curves are given. At working load, the behavior of the structure was characterized by small deflections and stresses. The structure was essentially uncracked after reaching design load. Under increased loading, the stresses and deflections increased at an increasing rate as cracking progressed at failure at 955 psf. Comparison of the computer and design unit moments showed the structure to be adequately designed. However, the distribution of reinforcement was inefficient. The indication of the tests is that high-strength steel can be used efficiently and that the empirical method of design can be made simpler.