Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 506
TE 409 COMPLETE SOLUTION OF NUMERICAL PROBLEMELASTIC ARCH 43L Dimensions of Arch. We shall apply the above prin-ciples to the design of a segmental arch having a span of 60 feet and arise of 15 feet. To find the radius for the intrados which will fulfilthese conditions, we may note from Fig. 232… … Fig. 232. Reinforced-Concrete Arch Rib, Fixed Ends. tangent has this value is 26° 34, and therefore a equals 53° S. Tofind the radius, we must divide the half-span (30) by the sine of 53° 8,and we find that the radius equals 37.50 feet. For the depth of the keystone we can employ only empirical…
Architecture · Building
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