Illinois Society of Architects · Chicago · leaf 466
h the propor-tion of cement in the mix. Maximum water-tightness obtains for alimited range of the water-cement ratio w/c.For the ricli mixes this range is much widerthan for lean mixes. . . .the use of excessive amounts of water.. . . greatl.v increases the permeability oflean mixes. When… … Oin;iiii.iit;il In.n Stair Kiirlo^uro. Wnshinutni, PaiU X:iti..iial H.iiiU, ( liiia<rn. 111.Albert A. Schwartz. Ariliitcct. Chicaun. 111. Western Architectural Iron Co. ORNAMENTAL IRONAND STEEL STAIRS 211-233 West Schiller Street, CHICAGO, ILL. Also Manufacturers of Ideal Easy Removable Steel…
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