[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 51
Ras a centre, with P L, Fig. 2, as a radius, describe an arccutting the curve in D ; draw R E equal P C, and D E equalN C, Fig. 2 ; set off each way from B equal half the widthof rail ; from the points describe the outside and insidecurves. To find the angles to bevel the plank for the wreath :… … STAIR BUILDING. 47 PLATE XXII Exhibits a plan for platform stairs. For want of room atthe landing of return flight, the step at the starting is placedin the cylinder. To draw the elevation of the handrail.: Set up from A toS equal one riser, and from R to B equal two risers ; fromthe points draw…
Stair building
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