Illinois Society of Architects · Chicago · leaf 196
am or dirt. If crushed stone grit is used Itshall bo clean, gritty, and free from dust. (c) The stone to be used in concreteshall be clean crushed hard stone, or cleancrushed blast furnace slag, or gravel, andof a size to pass through a 1%-inch squaremesh. If limestone or slag is used, it shallbe… … Hollow- -rite. PLANTig. 43. Fig. 44. PROTECTION OF EXTERIOR COLUMNS.Secflon 610. Figs. 40, 41, 42. Requirement for protection ofcolumns of building exceeding 50 ft. height fromexternal change of temperature and Are. Fig. 40. (A) 4 concrete required. (Hi 4 brick required. Fig. 41. (A) 4 solid porous…
Architecture · Building · Architects
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