[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 41
points R andP as centres, with D 4, Fig. 2, as radius, describe arcs cut-ting each other in L ; draw L P and L R the direction ofstraight rail ; set up from C to D equal C A, Fig. i ; fromthe point D as a centre, with S 4, Fig. 2, as a radius, describearcs cutting the major axis in the points 2 and… … STAIR BUILDING. 37 PLATE XVII. Fig. I exhibits the plan of an obtuse-angled platform stairs. To draw the elevation of the handrail : Set up from A toB equal two (2) risers ; draw the common pitch D C andB C ; from the point of intersection, draw C S parallel toB A, and S R equal S A. To find the…
Stair building
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