de of the center top of foundation to springing line. We have three dimensions only to de- comprised between the joints of rupture and the springing line, and finally the abut- termine by formula, viz., the depth of keystone, the thickness of the abutments, ments proper, comprising those portions… … f^,The first and third of these parts we Or, using the simplified formula No. 5, have already considered. The interme- E = l + 0.04(5s + 4A) = 11.96 ft. diate parts are determined by Dejardin, which serves as a very good check upon fay simply taking a distance b on the the more complicated formula.…
Engineering
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