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Dear Sir,-With reference to the correspondence in No. 1, Vol. II., of THE STRUCTURAL ENGINEER, now to hand, I think I may be able to supply some information regarding a reinforced concrete road I have just completed. This road, known as the Great West Raad Extension, is a continuation of the Great West Road, and will (when the remaining sections are complete) link up the Bath Road at the Great West Road Junction with the Staines Eoad at Bedfont.
Prof. S. W. Perrott, in opening the discussion, said he would like to suggest that each member taking part would mention his name. As Mr. Clarke was not present to hear the remarks it was essential in dealing with each point in the paper, to do so as clearly as possible in order that the reports sent forward to Mr. Clarke would be as clear as possible. Continuing, he said that this was a paper very suitable for meetings, and one which should be welcomed because matters of this kind were always wanted to deal with. It is in the details that new things can be done with great advantage. The suggestions set out in this paper formed a type of detail which might be of great use to structural engineers. He hoped everyone would contribute to it. The Hon. Secretary then read a written criticism from Mr. Durose which we hope to publish in a later issue.
A “Monolith ” pile is a concrete pile which is cast in its permanent position in a hole prepared for the purpose. The hole for the pile is formed by driving a hollow steel cylinder or tube, 16 ins. diameter, with the bottom end sealed with a special shoe, in the same manner as a pile. When the hollow or tube is driven to the final penetration, it is filled with plastic concrete to a height of several feet (according to the length of the pile) above the desired finished top of the pile. Thecylinder or tube is thcn slowly withdrawn, leaving the shoe in position. (See Figure 1.) In this manner, the concrete fills the entire void left by the hollow cylihder or tube, and any irregularities of the earth, cementing and uniting the surroundirig soil, this gives thc “Monolith” pile a frictional resistance greater than any other type of pile of equal diameter and length. In all cases where “Monolith” piles have been exposed, they have been found almost perfectly cylindrical and of a greater diameter than l6 ins.