Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 215
asons, reinforced concrete was substituted for all the metal work and the relative cross sections of the cast-iron columns and of the substituted reinforced concrete columns, the latter, as planned by the contractors themselves, drawn to the same scale, from the first story of said building, are… … sections of the cast iron and of the Z bar columns were taken from Carnegie's handbook. Allowing 400 lb. per sq. in. on the concrete, instead of 500, would require a column 27 or 28 in. square. From this and similar examples, taken from ordinary daily practice, I am absolutely convinced that the…
Engineering
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