Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 278
escribed is about the only way in whichthis arch can be expeditiously set out. Setting Out Curves for EllipticalArches. Commonly, an ellipse is set out fromthree centres with compasses, but a three- setting out true elliptic and oval arches.The first method, illustrated at Fig. 840, isalmost… … Fig. 842.—General View of Trammel and Crossfor Setting Out Elliptical Arches. which the curve passes. The transverse ormajor axis a b, and the conjugate or minoraxis c d, being given, enclose the space bythe parallelogram eegh. Divide the linesa e, e c, each into any number of equal parts(in this…
Carpentry · Joinery
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