Two sorts of figures, tables and references are mentioned in this text: those appearing in the original paper and those produced in the course of the discussion. The latter are distinguished by the prefix D.
Mr. D.C. Teychennk: 'The few comments I will make on the paper will be restricted mainly to the material properties rather than to the structural aspects. At the Building Research Station they have agreed with many of the things, such as increased strength, which Professor Evans has claimed in his paper but the scale of increase
is not the same. The increase in strength of concrete with age, depends upon many factors-the type of cement, the mix proportions, and the curing conditions.'