. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. he points HKNM. Also,let E be the middle point of the lesser semi-circular arc DEF. Produce HD to v, and inthe arch DE take any number of points rs, and draw rb, sa, EI parallel to DH. Drawrf, su, Ev parallel to DF, cutting Dy at the points tuv, and produce HC to G. In CGmake Cw, , CG respectively equal to Dt, Dm, Dc, and draw wz, i-y, GB parallel to AC,cutting the seirj-circle ABC in the points zyB. FVom the points Byz draw BI, ya, zh,Ijarallel
. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. he points HKNM. Also,let E be the middle point of the lesser semi-circular arc DEF. Produce HD to v, and inthe arch DE take any number of points rs, and draw rb, sa, EI parallel to DH. Drawrf, su, Ev parallel to DF, cutting Dy at the points tuv, and produce HC to G. In CGmake Cw, , CG respectively equal to Dt, Dm, Dc, and draw wz, i-y, GB parallel to AC,cutting the seirj-circle ABC in the points zyB. FVom the points Byz draw BI, ya, zh,Ijarallel to CL. Then through the points lah draw a curve, which will be one half of theplan of the arris. The other half will be found in ti;e same manner. 1948. The method of tracing the plan of the is the same {see fig. 634.) when thevaults intersect obliquely. 1949. Ti) find the plan of the intersections of two arches of the same height, and either of themiine or different ?pedes. Let the sections of the two arches be ABC and DEF {fig. ()3,5. ),the arcs AB, BC being equal to each other, and the aics DE, EF equal to each other ; (I Q 594. THEORY OF AliCHiTKCTUllE, Poc« II.
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