Gould, Lucius D., b. 1814. [from old catalog] · New York, A.J. Bicknell & co. · leaf 72
he point S as centre, with B H, Fig. 1, as radius, describean arc, cutting the curve at J. For the direction of the straight wood,draw J H, equal to N H, Fig. 2, and S H, equal to T H, Fig. 2. For thewidth of the mould, and the points for the pins to describe the outside andinside curves, set off… … Plate 17 Exhibits the ground plan and elevation of the landing, of an obtuse angled stair-case, showing the method of determining the radius of the circle for thecylinder. From the edge of the drawing-board, square up the line A D. At rightangles to J A B, draw the floor line and centre of rail.…
Stair building
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