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 111
PRACTICAL GEOMETRY AND MENSURATION. 95 dicular o s from the centre o ; divide the ra- … Problem XII. To draw a straight line equal to any given arc of a circle. Let A c B be the given arc of a circle ; divide the chord a b into four equal parts, and set off one of these parts from b to c ; join d c, and it will be the length of half the given arc, suffi- ciently near enough for…
Bricklaying · Plastering · Masonry
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