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Scientific American, Vol. 35, No. 10 (1876) (1876)
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calculated for a movable load of 100 Ibs, | occupied by Boundary Avenue, a street of 80 feet in width, | proper radius. The mode of adjusting the bearing of the per square foot, or 4,000 lbs., per lineal foot, with a factor | making with Forbes street, on the center line of the bridge, | ribs on… … © 1876 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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