[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 35
, Fig. i ; place pins in the points 2 and 3 ; by theuse of a thread or cord and pencil, describe the ellipticalcurve B L for the centre of the mould ; square over fromA B to C equal D H ; draw the tangent C D equal H F,Fig. I. To find the width of the mould at B : Apply the bevel tothe width of the… … STAIR BUILDING. 3I PLATE XIV Exhibits the plaii for a quarter platform stairs. To continue the common pitch in the wreath : Set offfrom the centre of rail A, to B and C equal half the widthof step to face of risers. To draw the mould, Fig. 3 : Square up from A to J equalE D, Fig. I ; from the…
Stair building
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