Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 205
Thickness of wall to beincreased 30$.each side of,and 50above and below tneopening, mesh forming hooped Col. tra Vertical Steel Barsach side of opening, the numberadded being 50$ more than thenumber omitted for opening. c <= => ^ 5;a; e*-~o~ ?0-3U bars150 80-3/4 barsI60 Boiler Room Floor 10%… … Double Layer ofMesh. 30aboveand 30below thesmoke opening.
Building · Heating · Ventilation
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