The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 360
ers. WINDING STAIRS. 469.—Winding stairs have steps tapering narrower at one endthan at the other. In some stairs, there are steps of parallel widthincorporated with tapering steps ; the former are then called flyersand the latter winders. 470.— To describe a regular geometrical winding stairs.In… … Fig. 808 a, e, is given as the face of the first riser, and the point, j, for thelirai; of the last. Make e i equal to 18 inches, and upon o, witho i for radius, describe the arc, ij; obtain the number of risersand of treads required to ascend to the floor at j, according to Art.•ioi, and divide…
Carpentry · Architecture
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