Shaw's Civil architecture; being a complete theoretical and practical system of building, containing the fundamental principles of the art . ular to G H; makeF H equal to the height of a step, and join H G;then G H is the pitch line of the stair. Draw linesparallel to a c, cutting the inner edge of the scroll atthe points /, g; h, the outer edge at i, k, I, m, n, thestraight line F G in the points n, o, p, q, r, and H Gat the points N, O, P, Q, R; let a c cut the concaveside of the scroll at t, and let it be produced to cutH G at A; from the point //, where the line d c cutsthe concave spiral
Shaw's Civil architecture; being a complete theoretical and practical system of building, containing the fundamental principles of the art . ular to G H; makeF H equal to the height of a step, and join H G;then G H is the pitch line of the stair. Draw linesparallel to a c, cutting the inner edge of the scroll atthe points /, g; h, the outer edge at i, k, I, m, n, thestraight line F G in the points n, o, p, q, r, and H Gat the points N, O, P, Q, R; let a c cut the concaveside of the scroll at t, and let it be produced to cutH G at A; from the point //, where the line d c cutsthe concave spiral of the scroll, draw h W parallelto a c, cutting A G at W, F G at r, and the con-vex spiral at ?/. Draw W H and G E perpendicularto II G. Make W H and G E each equal to v h or G e,and join H E; through the points N, O, P, Q, R,draw lines perpendicidar to H G ; in the perpendicu-lars make AT, N F, O G, each respectively equalto a, t, n, f, o,g; also, make N I, O K, P L, Q, M,R N, each respectively to « i, 0 k, p 1, q m, r n; drawT X paraUel to H G, and draw the curves T F G H ?jBaE ri.:n .- iM4i)|i!)|].[g> i?®(B iroas iS:copyright?registered:[ULo. aif-pfLo^inro^Ri ®[? Trsaig sa®aj(L©.
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Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
