Architectural iron and steel, and its application in the construction of buildings ... specifications of ironwork ... tables selected expressly for this work ... by Wm. H. Birkmire (1905)
Birkmire, Wm. H. (William Harvey), 1860-1924 · New York, J. Wiley · leaf 145
-plate girder issometimes adopted (see plan and section). It is composed oftwo wooden beams connected by an iron plate with |~inchbolts placed about two feet apart. g 126 ARCHITECTURAL IRON AND STEEL. It has been found in practice that the thickness of theplate should be about one twelfth of the… … SECTION; might be thrown on the plate. The modulus of elasticity ofwrought iron is about thirteen times that of hard pine; or abeam of hard pine one inch wide would bend thirteen times asmuch as a plate of iron of the same size under the same load. Let D = depth of beam ;B = thickness of wood ;L =…
Building, Iron and steel
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