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 49
Ionic. 22 ARCHITECTURE. describe the eye of the volute; about o, the centre of theeye, draw the square, r t i 2, with sides equal to half thediameter of the eye, viz. 2^ min., and divide it into 144 equalparts, as shown at Fig. 5. The several centres in rotation areat the angles formed by the heavy… … Fig. 4.—Ionic Volute. THE IONIC VOLUTE. 23 centre lor the arc a b {Fig, 4;) 2 is the centre for the arcb c; and so on to the last. The inside spiral line is to bedescribed from the centres, x, x, x, etc. {Fig. 5), being thecentre of the first small square towards the middle of theeye from the…
Carpentry · Architecture · Building
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