Concrete bridges and culverts, for both railroads and highways (1909)
Tyrrell, H. G. (Henry Grattan), b. 1867 · Chicago The M.C. Clarke publishing co. [etc.] · leaf 65
falls outside of themiddle third of the arch ring, a new position mustthen be assumed for the point S, and another lineof resistance drawn, falling entirely within the mid-dle third. If no such line of resistance can bedrawn, then either the form of the arch or its thick-ness must be changed until… … PJ.AIX COXCRFTF. ARCH BRIDGFS. 47 the inaximiiiii dead load. Botli lialves of the archmust then be considered. As before, the portionof the bridge above the intrados is divided intovertical strips, and the vertical and conjugate load-ings written down in their respective places. Aload line, ABC, is…
Bridges, Concrete · Culverts
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-421-242.webp)
