Illinois Society of Architects · Chicago · leaf 174
edrock. (b) Foundations shall in all cases extendat least four feet below the surface of theground upon which they are built, and inthe case of all buildings luO feet or morein height, foundations shall extend at leastto the depth drained by the street sewerin the adjacent streets or alleys; but if… … Fig. 24. Fig. 25. FOOl I MIS. Sei i ions 31 ■. b.I _■ -24 (B) Shall in all cases extend 4 0below finished grade at building, unless footings reston bed rock Sec. 51 la. Fig. 25 (( ) Buildings 100 ft. or more in height;gs shall extend at least to a depth drained bysewer in adjacent streets and…
Architecture · Building · Architects
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