Useful information for architects, engineers, and workers in wrought iron (1886)
Phoenix Iron Company · Philadelphia : Printed by J.B. Lippincott Co. · leaf 114
inary roofs of short span thirty pounds per squarefoot is quite enough, however, and for long spans, over sixtyfeet, thirty-five pounds will be sufficient to provide for, withthe factors of safety in the material that are usually adopted.The stresses upon each member of the truss having… … in THE PHCENIX IRON COMPANY, inch, and the compressive resistance of beam or shape ironat from 6000 to 8000 pounds for the same unit of section. It should be noted that the smaller or counterbrace rodsought to be made strong enough to resist strains induced bywind pressure on one side of the roof…
Wrought-iron · Iron, Structural · Building, Iron and steel · Building
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