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 50
ewall, being thus braced by the surrounding masonry. * In first-class foundries a high average is 20,000 pounds per square inch intension. This gives 4^ to 1. 30 CAST-IRON LINTELS. 31 68. Skew-back Lintels—are placed over openings to re-ceive the thrust of the arch, and to make a… … c t.g a Tic cj Sidewalk lintel
Building, Iron and steel
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
