Rudiments of the art of building : in five sections : general principles of construction, materials used in building, strength of materials, use of materials, working drawings, specifications and estimates (1871)
21 AHT OF BUILDTNO Fig. 19. … 89. Counterforts, — Eetaining walls are often built with counterforts, or buttresses, at short distances apart, which allow of the general section of the wall being made lighter than would otherwise be the case. The principle on which these counterforts are generally built is, however, very de-…
Building · Building materials · Engineering
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