Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 43
leav-ing just web enough betweento hold them firmly together,we will have the I-beam whichamong rectangular supports isstrongest and stiffest, weightfor weight. In producing itthe engineer has bared withinthe joist the skeleton whichconfers rigidity, stripping offall useless and burdensome… … Girder cut from joist.
Inventions · Inventors
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