Illinois Society of Architects · Chicago · leaf 524
show two-thirds or moreheart surface on one of the wide faces;sizes 9 inches and over on the largest di-mension shall show two-thirds or moreheart on both of the wide faces. Whensticks ai-e squaie the face showing tliemost heart shall govern tlie inspection onsizes under 9 inches and the two… … t Central Asbestos and Magnesia Company Manufacturers and Contractors for PIPE AND BOILER COVERINGS SMOKE STACK AND BREECHING LININGS MAGNESIA AND ASBESTOS PRODUCTS HAIR FELT, MINERAL WOOL, ETC. 214-216 West Grand Avenue, Chicago I elephones buperior loc-i^ 522 Paragraph 33—Wane not exceeding…
Architecture · Building · Architects
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