Illinois Society of Architects · Chicago · leaf 199
lace in an unset state, or withsuch other incombustible material as shallbe approved by the Commissioner of Build-ings. 627. Partitions In Fireproof Buildings.)(a) Where stairs, shafts and elevatorsare enclosed they shall be enclosed In fire-proof partitions, as described in Section628 of this… … Pig. 50. PifiT. 51. Section 629c.Fig. 50. Area of cross section A B C D E shallnot be less than 60 sq. Inches. Sccfion 629d.Fig. 51. If area of cross section (A B C D) isJess than 60 sq. inches or (E) (thickness of plat-form) less than 7 in., then metal sub-tread F andsub-platform F (— 3/32 in.…
Architecture · Building · Architects
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