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 45
e^ A B and at right angles Avith it. "T square and drawing-board this is unnecessary, as he is simply guided by the square when fixed first to the side, and then to the bottom of the board. In showing the methods of drawing arches and taking ofi" the moulds, it will not be necessary to speak of… … Fig. 22. compass at the centre o, and with the radius d b describe the half-circle which will answer for the sofiit; then with the same centre describe a greater half-circle, according to the depth of the arch required. Divide the outer ring with the compass into as
Bricklaying · Plastering · Masonry
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
