The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 153
spread. If the arch fails at the crown, by the voussoirs turning on their•dges at the intrados, as in diagram 8, then at simie point in thenaunches, the voussoirs will, at the same time, be turning on theiredges Aj, at the extrados, in which case the haunches will sinkand the crown of the arch will… … sultant pressure must be at the extreme edge of the voussoir, andits direction must also be that of the tangent to the intrados, orextrados, at A,, Aj, &c., because if not, the line of resistancepasses without the boundary of the voussoirs, either on one orotlier side of the point A, and tlie…
Architecture · Civil engineering · Science
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