[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 73
s centres, with H F and E F, Fig. 2,as radii, describe arcs cutting each other in J ; set off eachway from D equal half the width of rail ; from the pointsdescribe the outside and inside curves ; extend the wreathat P equal half the depth of rail. To find the angles to bevel the plank for the… … SCALE I IN. = 1 FOOT STAIR BUILDING. 69 PLATE XXXII. PLATE XXXI CONTINUED. To find the elevation of the tangents A C N, Fig. i, andthe common pitch : Set off from P to H equal the tangentsA C and N C ; square up from P to S equal seven risers ;join H S, the elevation and common pitch required. To…
Stair building
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