The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 176
is, it differs from all othercombinations. Upon referring to Figure 10, which represents a clearspan of 180 feet, it will be seen that the arch braces whichrest upon the abutments are extended to points on the archabout forty-seven feet from the abutments. From the topof each set of arch braces,… … 17] 172 PRACTICAL MECHANICS.
Mechanics, Applied
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