made a tolerably-correct approximation to the true propor-tion of the parts of the beam, so as tosecure a maximum strength with a givenquantity of material.* The mill is a large building of about 140feet long, 42 feet wide, and seven storieshigh. It contains about 648 square yardson each floor; and… … * If wo take the area of the bottom flauge to be 406 inches, the depth of thebeam in the middle I3| inches, and the distance between thesupports 14 feet, then, by Mr. Hodgkinsons formula, we have 26 x4-06 X 13-25168 = 832 tons = the breaking weight in the Fig. 2. A middle. But assuming that the…
Building, Iron and steel
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