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 383
opening of the piers, all the sections meet-ing in this point O. Each of the sections ofthe piers which support the arch forms anangle of 2P 15 with the vertical, and of 68-^45 with the horizon. 1 389. In considering each of the wedges ofthe lialf arch as in the preceding method, itwill be found… … Total 1 338 -07 The height of the jjiers being 195 lines to the imderside of the arch, and 216 to tlie topof the extrados, it follows that the arm of the lever, whicii is the same for all the wedges,is 20fj^, from which we derive for the thrust p of the fornuila. ai b = 1338 07 X 206-33 = 276084…
Architecture · Architects
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