The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 177
17] 172 PRACTICAL MECHANICS. … to a point 47 feet towards the centre of the bridge, reduc-ing- a span of 180 to 86 feet, so far as the tensile strain upontlie lower chord is concerned. For this intermediate space of 86 feet, the arch beam isof sufficient strength to sustain tlie whole load, if required. PRACTICAL MECHANICS. 173…
Mechanics, Applied
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
