Ord22 227 - Laserfiche WebLink

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. , They shall not be used as bearing walls, but the floor lo.ad shall be oarried on steel or cast iron columns built into the walls. Curtin walls supported at every floor line B.nd at roof by a frame of steel or reinforoed concrete girders and .o~umns and oonstructed as required for Class "A"or Clas5 "8" buildings, will be permitted in C1ass"C" buildings; provided said fraffie is tied togetherlin both horizontal dir- ections at every floor and .roof line with steel or reinforoed soncrete ties, stru.ts or girders spaced not to exceed twenty feet apart and of spans not exoeeding twenty five feet between eolumns and walls or between columns. Interior Columns shall be of steel or reinforced concrete. Steel .olu~ms, girders, ties and struts shall be fire proofed as provided for Class "A" buildings. Reinforoed ooncretetiesor struts shall be not less than ten inohes wide and thedBpth shall be not les8 than that of the floor joist. The area of steel reinforlement in ties or struts shall be not 1es8 than one rer oentum of the area of the concrete, in crOSB section, and the reinforoement sha.ll be rigidly oonnected to the wall oolumn or girder reinforoement. Court Walls SECTION 33. The walls of all outer and lot line courts and shafts shall have walls constructed in the saffie manner as required for exterior walls. Walls of interior oourts and shafts may be construoted of timber studding covered on the exterior with fire proof material. Courts and shafts adjoining exterior walls are regared as interior provided the exterior wall adjoining same shall be unbroken by openings, or if broken by open- ings, said openings shall be olosed by one fourth inah wire glass set in metal sashes and metal fr~mes. Fireproofing SECTION 34. All girders and oolumns supporting masonry, except columns at street line, shall be fireproo'ed. 16 \1