. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. 648 THEORY OF ARCIIITKCTURE Bqpk II,. ting the base DB of the angular ribin g, i, I, and ji. Draw gh, ik, Im, andno, each perpendicular to DB, cuttingthe diagonal rib at /(, h, m, and o. Thenmaking the distances GH, IK, liM,and NO equal to the correspondingdistances gfi, ik, Im, and no, throughthe jjoints H, K, M, O draw a curvewliich will be the under edge of tliatfor the bottom of the ribs QG, III,SL, TN, and UC, shown complete oneach side of the
. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. 648 THEORY OF ARCIIITKCTURE Bqpk II,. ting the base DB of the angular ribin g, i, I, and ji. Draw gh, ik, Im, andno, each perpendicular to DB, cuttingthe diagonal rib at /(, h, m, and o. Thenmaking the distances GH, IK, liM,and NO equal to the correspondingdistances gfi, ik, Im, and no, throughthe jjoints H, K, M, O draw a curvewliich will be the under edge of tliatfor the bottom of the ribs QG, III,SL, TN, and UC, shown complete oneach side of the square plan. If eacliof the circular segments on each sideof the square plan be turned up atright angles to the plan A BCD, theribs will then stand in their trueposition. 2095. We shall in this work confineourselves to the simplest forms of tim-ber l)ridges, which, as well as those of P-t^- 5- Btone, will be found fully treated of in the Encyclopfcclia of Engineeiing, by Mr. Cres},which foniis one of the series. As they mostly depend on the pruiciple of the truss, wlierathe span is large, and this combination of timbers we have already exphiined ; so in stonflbridges the princi
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Keywords: ., bookcentury1800, booksubjectarchitects, booksubjectarchitecture
