Illinois Society of Architects · Chicago · leaf 260
e height of thewall. The space enclosed by such roof abovethe limitation of the height of such wallmay be used as an inclosure for pipes, ven-tilating or elevator machinery or for ven-tilating ducts, but it shall not be lawful touse such space for purposes of storage, busi-ness or residence. 859.… … Pig-. 50. Pig-. 51. Section 854c.Fig. 50. Area of cross section ABODE shallnot be less than 60 sq. incbes. Section 854d.Fig. 51. If area of cross section (A B C D) isless than 60 sq. inches or (E) (thickness of plat-form) less than 7 in., then metal sub-tread F anilsub-platform F (— 3/32 in.…
Architecture · Building · Architects
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