ABSTRACT
In general the moments and shear forces will be found as for beams. They may also be found from an elastic analysis such as those of Pigeaud and Westergaard, or, alternatively, by Johansen’s yield line method or Hillerborg’s strip method provided the ratio between support and span moments are similar to those obtained by use of elastic theory. Although the analysis and design will be carried out at ultimate limit state it will be the serviceability limit state of deflection that will be the important criterion. The serviceability limit state of cracking will be controlled by bar spacing rules. In the estimation of the slab thickness the designer has to consider a span/effective depth ratio and the cover.
