ART OF BUILDING. 401 … required shape, with the least waste of material and labor,and on the plane surfaces so formed applies the moulds towhich the stone is to be worked To form a plane surface, the mason first knocks off thesuperfluous stone along one edge of the block, as a, b (fig. 80), until it coincides with…
Architecture · Building
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![An illustration from Rudiments of the art of building : represented in five sections [...] for the use of architects, builders, draghtsmen, machinists, engineers and mechanics (1853)](https://img.insideoutlibrary.com/img/200/ia-rudimentsofartof00bull-124-61.webp)
