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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 385

An illustration from An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth, 1888, leaf 385
determined by a vertical let fall from the centre of gravity Q, which gives for theresistance of the pier the expression EP x PR x PS. 2. By the sum ofthe vertical efforts ofthe upper part of each arch, represented by INIK x ABacting at the point K, the arm of their lever in resjiect of tiie… … Fig. (See l:)J^^, et seq.) AB X TE. «<L X AB X PH = PE X PR X PS4- MK x AB x KH + IT ; But as in this equation neither PR ( = BE) nor PS nor KH noi TE is known, we mustres(jrt to an algel)raic equation for greater convenience, in which The effect ofthe thrust in the expression mL x AB =;3Tlic…

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