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 328
OR QUARTER-CIRCLE STAIRS. 289 280.—Hand-Railings for ^Vinding^ Stair§.— The termwinding is applied more particularly to a stairs having stepsof parallel width compounded with those which taper inw^idth, as in Fig. 135, and as is here shown in Fig. 162, inwhich f abc represents the central line of… … lar to af, draw ae (the occurrence here of one of thepoints of division on the tread-line perpendicularly oppositea, the spring of the circle, is only an accidental coincidence);make a a^ equal to two risers; join a^ and /. With thediameter <^r, on ^ as a centre, describe the arc at g,…
Carpentry · Architecture · Building
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