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 130
Ti<i 3 Tig4-> HOLLOW BLOCKS AS FIALARCHES ~npE PROOFING COLUMNS, … Fig G Blocks 2 inches thick weigh II pounds per square foot;3 inches thick, 15 pounds. Fig. 3 shows blocks as flat arches.Fig. 5 is a segment arch with a space allowed for filling of con- 112 ARCHITECTURAL IRON AND STEEL. crete or other incombustible material, and timbers to whichflooring is to be…
Building, Iron and steel
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