The Use of Deformed Steel Bars in Reinforced Concrete

Sir-The writer found this paper of the greatest value and would be glad if the author could amplify some points.

The presence of the slab on the compression side of a T-beam permits the use of a large amount of tensile, steel in the rib. In continuous spans, however, the reverse moment at the support is usually comparable in magnitude with the span moment, and so also calls for a considerable amount of tensile steel; but as the slab is now not on the compression side the rib concrete often requires the assistance of compression reinforcement (Fig. 1). F.H. Blake

In order to use available materials in the most efficient manner, it is essential for the user to have full knowledge of the properties and characteristics of the material supplied for prestressing tendons. The purpose of this paper is to consider the various conditions in which cold drawn high tensile steel wire can be supplied, and the effect of various treatments on the behaviour of this material in terms of service conditions. J.L. Bannister