The Practical Application of the Water-Cement Ratio Theory

The purport of this paper on the erection of steel bridges, is to describe various methods in use for putting the steelwork into its final position at the site. These methods are taken from actual examples of bridges erected, and will, it is thought, cover in a broad way most methods in common use. Of course, no hard and fast rule can be laid down, but each bridge has to be considered on its merits, and the method adopted for the erection probably plays as large a part as any in deciding the type of bridge to be designed for a particular type. D.G. Mackintosh

It may be of interest to outline briefly the more important, points in regard to the structural steelwork for this colossal block of service flats.

This method was first used for continuous girders, but is now used for ordinary spans.