Elementary building construction and drawing : stage 1 (1907)
Burrell, Edward J · London : Longmans Green · leaf 204
193 CHAPTER XII. NOTES ON ROLLED LRON JOISTS, CAST-IRON GIRDERS, CANTILEVERS, ETC. The manufacture of wrought iron, and of machinery for rolling it into various useful shapes, has been brought to such perfec- < 4'-- i ; I --3i":---> channel T-CT07V aji^le tTon trorv Fig. 265. tion of late years… … Where the weight to be " /? /</ /b'T^O" borne is excessive, two or more rolled iron joists may Mean lAickness ofj^ioun^t be united by wrought-iron plates, as in fig. 266. A compound girder of the di- mensions given, with a span of 12 feet, is capable of sustaining a distributed load of about 100…
Building
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