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 594
nd/, with any radius greater than ed^ describe arcs, cutting c t h \ d r ^f gFig. 352. each other at g, join a and g, and the line ad wiW be theperpendicular required. 603.—To Erect a Perpendicular at the End of a Line. —Let a {Fig. 353), at the end of the line c a, be the point atwhich the… … The principle here made use of is a very important one,and is applied in many other cases (see Art. 510, 3d, and Art.513. For proof of its correctness, see Art. 352). A second method. Let b (Fig. 354), at the end of the hnea b, be the point at which it is required to erect a perpendic-ular. Upon b,…
Carpentry · Architecture · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
