Illinois Society of Architects · Chicago · leaf 202
. Windows and Mechanical Ventila-tion.) (a) In every building hereafteierected for or converted to the purposes olthis class, courts shall be of the minimumwidths and areas prescribed in Section 644of this chapter, and vent shafts as definedin Section 634 of this chapter, shall be of thefollowing…
Architecture · Building · Architects
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