The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)
Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 595
e the point at which it is required to erect a perpendic-ular. Upon b, with any radius less than b a^ describe the arcced\ upon c, with the same radius, describe the small arc at^. 552 PRACTICAL GEOMETRY. and upon e, another at d; upon e and d, with the same or anyother radius greater than half e… … Fig. 354. fact that the side of a hexagon is equal to the radius of thecircumscribing circle. A third method. Let b {Fig. 355) be the given point atwhich it is required to erect a perpendicular. Upon b, withany radius less than ba, describe the quadrant def; upon d,with the same radius, describe an…
Carpentry · Architecture · Building
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