The rudiments of practical bricklaying : in six sections : general principles of bricklaying, arch drawing, cutting, and setting, different kinds of pointing, paving, tiling, materials, slating, and plastering, practical geometry, mensuration, etc. (1882)
Hammond, Adam · London : C. Lockwood · leaf 55
TING, AND SETTING ARCHES. 39 often he may require quite a different kind of ellipse Gothic to the one here described, and by his understanding the principles of this one he will be better able to reduce or elevate them to suit his requirements. Perfect accuracy in all good brickwork cannot be too… … ference being in the crowns. But the drawing is quite different. In drawing this arch, divide the span into three equal parts, as shown at a c d b, then, with d as centre and d b for radius, describe the arc from b to e equal to d b, and the same on the opposite side to f ; then, with d for centre…
Bricklaying · Plastering · Masonry
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