Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 123
The highest pointc is first determined as in Fig. 68. Other planesbetween Z and the base are then taken. LetW be one such plane. Plane W cuts a circlefrom the cone, the diameter of which is x-y. Acircle with this diameter may then be drawnin plan, intersecting plane Y in points b and d.These points… … Pig. 71. Cone Cut by Plane Parallel to One Element, Giving CurveKnown as Parabola. Very often this method of construction isbetter than that of Fig. 68, on the score of accu-racy. By referring to Fig. 68, it will be seenthat, owing to the steep inclination of elements0-3 and 0-5, when b and d are…
Architecture · Building
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