Chicago : Engineering and Contracting Pub. Co. · leaf 403
backward.Suppose the thickness at the 60° point to scale18 ins., and the computed moment to be 9,300in.-lbs. From the 18 ins. deduct 3-in. cover,leaving the effective depth 15 ins.; at the in-tersection of the lines in the diagram, Fig.9, (f) c would be about 340 lbs. (if the dia-gram were carried… … -13-4 - ■ Half Section tor Hard Bottom Holt Section for Soft Bottom Fig. 11. Elliptical Arch, Baden Public Sewer. ft Then the crown moment in ft.-lbs. =8,840 = 100,080 -lbs., and the thrust II9,670 lbs. Prom Fig !» for M 100,000 in -Ibs. and fc = 540, d = ll ins., h, = ll-f 3 =If 9,070 14 ins. «=…
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