Illinois Society of Architects · Chicago · leaf 229
lid porous tiles, or ifof terra cotta, such tiles shall be not lessthan two Inches thick, applied to tlie metalin a bed of cement mortar; liollow tiles«:hall be constructed in such a manner thattliere shall be one air space of at leastthree-fourths of an inch by the widtli ofthe metal surface to be…
Architecture · Building · Architects
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