[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 43
m A to L and J, equal LPS, Fig. i ; set off from L toR and D equal N B, Fig. 2, bisected ; draw J R and J Dthe direction of straight rail ; set up from A to B equal L A,Fig. I ; from the point B as a centre, with F B, Fig. 2, as aradius, describe arcs cutting the major axis in 2 and 3 ;place pins… … STAIR BUILDING. 39 PLATE XVIII Exhibits a quarter circle of winding stairs. To draw the elevation of the handrail : Set up from A toB equal five risers ; from the points B and C, draw the com-mon pitch ; from th^ pitch as tangents, describe the easings;join C B tangent to the easings. To find the…
Stair building
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