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The value determined in accordance with Section 203.4.
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Related Code Sections

1204.2 Historic Buildings, Building Area
The allowable floor area for historic buildings undergoing a change of occupancy shall be allowed to exceed by 20 percent the allowable areas ...
1301.6.2 Performance Compliance Methods, Building Area
The value for building area shall be determined by the formula in Section 1301.6.2.2. Section 506 of the Chicago Building Code and the formula ...
203.4 Definitions and Measurements, Building Area
Building area shall be the sum of the horizontal area included within surrounding exterior walls, or exterior walls and fire walls, exclusive ...
508.2.3 General Building Heights and Areas, Allowable Building Area
The allowable area of the building shall be based on the applicable provisions of Section 506 for the main occupancy of the building. Aggregate ...