Viollet-le-Duc, Eugène-Emmanuel, 1814-1879, Van Brunt, Henry, 1832-1903 · Boston : James R. Osgood · leaf 294
want of means, by resisting or elastic combinations of masonn asiiecessity requn-ed. Thus, for example, the Romans did not hesitateto buikl a wall on two arclies, whose outer surfaces or extrados met attheu springing over the centre of the supporting pier (Fig. 41), be-cause the combination A B C,… … niass ; but if their niortars had less cohésion, we can readily see thatthe supported wall would shde down the sloping upper surfaces, E F,of the arches, and thus bear upon the acute angle. F. like a wedge.For thèse reasons, the Romanesque builder designed his pier, as iudi-cated in Fig. 4:2.…
Architecture
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