An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth (1888)
Gwilt, Joseph, 1784-1863, Papworth, Wyatt Angelicus Van Sandau, 1822-1894 · London Longmans, Green · leaf 610
Fig. 624. (CI is made equal to 15C ) AB equal in length to the span of the arch. Bisect AB in C by the perpendicular DI.and draw AG and BII parallel to DI. Make CD e(]ual to the height of the arcli, and theangles CDG and CDH each equal to half the vertical angle; make CFe(|ual to the dif-ference…
Architecture · Architects
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