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On the application of cast and wrought iron to building purposes (1857)

Fairbairn, William, Sir, 1789-1874 · London, J. Weale · leaf 43

An illustration from On the application of cast and wrought iron to building purposes, 1857, leaf 43 — ribs, 6-|- to 1.Area of section = 541.Weight of beam = 70|: lbs. Weights in lbs. 9327 . 10707 . 11397 . 12087 . 12777 . 14345 . 15913 . 16697 . 17481 , 19049 . 19833 . 20617 . Deflections in partsof an inch. •26 . •27 . •28 . •30 . •31 . •34 . •35 . •42 . •43 .•46•50•54 Returned to(weight taken… … 21009Hence strength per square inch of cross section =^^^ — 3883 lbs. Comparing this with the result from the common beam in Experiment XXII., which bore 2885 lbs. per inch, we have 3883 - 2885 = 998 = excess. 998Hence gain in strength = ^^^7 = 345, in terms of what the common beam bore ; or giving…

Building, Iron and steel

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