Portland Cement has proved itself to be so useful that there is a great desire to treat it as a general purpose material. Naturally, however, its physical and chemical characteristics impose certain limitations. These limitations can be modified by manufacturing adjustments of the cement itself or by suitable treatments of the concrete. C.L. a'Court
The main Sub-contractors taking part in the work described in the paper include the following :- Willment Bros. Ltd. (Excavation and demolition). Scaffolding (Great Britain) Ltd. (Scaffolding). Rom River Co., Ltd. (Steel reinforcement). Blaw-Knox Ltd. (Dewatering system). Matthew Hall & Co., Ltd. (Heating and Ventilating, Plumbing). Redpath Brown & Co., Ltd. (Structural Steelwork). David Esdaile & Co., Ltd. (Fibrous Plasterwork). E. Roland Hole