De Forest, Julia B. d. 1910, Caffin, Charles Henry, 1854-1918 · New York, Dodd, Mead · leaf 211
e radii of thecircle from which the segments aretaken. Round Arch In a round arch the weakest pointis the apex of. the arch, where thecurve is almost imperceptible: thisweakness disappears in the pointed-arch form. In order that the pitchof the roof might be sufficiently steepto make a good… … INTERIOR SYSTEM OF WORCESTER CATHEDRAL
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