Abstract
Loading tests of reinforced concrete slabs (one of equal depth and two above mentioned) are made. Deflections resulted at main points on these slabs are compared with the corresponding values obtained by the finite difference method. Their behaviors, especially mades of collapsing are observed. The results are summarized as follows. 1) So far as the tested slabs are concerned even slabs with the ratio of thickness of central to peripheral parts 1:2, the effect of membrane stresses are considered to be very small. 2) Observed deflections at each point are nearly equal to analytical. 3) The experiments produced a close value to the ultimate load calculated by the ultimate strength design method which is based on the yield-line theory.
