. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. t PQ, in e and f; make ea equalto gd, and ab equal to dw, and join al, bt; make fc equal to hd, and cd e(|ual to , andjoin nc, rd. To trace the stones by moulds, prepare the voussoirs with the head of themoulds of the straiglit arch FHG. The sofite should be hollowed in each voussoir byits ])artijular mould : the rest is done as usual; but it must be observed, that if thesotite moulds are made with straight lines in front and near the sofite, it
. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. t PQ, in e and f; make ea equalto gd, and ab equal to dw, and join al, bt; make fc equal to hd, and cd e(|ual to , andjoin nc, rd. To trace the stones by moulds, prepare the voussoirs with the head of themoulds of the straiglit arch FHG. The sofite should be hollowed in each voussoir byits ])artijular mould : the rest is done as usual; but it must be observed, that if thesotite moulds are made with straight lines in front and near the sofite, it must not be hol-lowed till the last. The voussoirs may be worked by bevels, preparing the stones by thejilans ACVM, 15DWO, as for common imposts. Although the arch in each front be notabsolutely necessary here, we shall give the method of constructing it. Let the line unbe drawn apart, on which lay the distances L5, L4, Li, LA on the lines ns, n</, no, ninsquare to mm. Draw the perpendiculars op, qr, st, on which lay the heights of the joints ofthe straight arch taken on the line of slope ; that is, lay l2, on op, \4 on qr, 15 on st, and.
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Keywords: ., bookcentury1800, booksubjectarchitects, booksubjectarchitecture
