CHAPTER 11

Where Required. Roofs, paved areas, yards,courts, courtyards, vent shafts, light wells, or similar areashaving rainwater, shall be drained into a separate storm sewersystem, or into a combined sewer system where a separatestorm sewer system is not available, or to some other place ofdisposal satisfactory to the building Storm Water Drainage to Sanitary Sewer water shall not be drained into sewersintended for sanitary drainage Traps Required for Combined water from an exterior area drain, catch basin, orfrom a roof and discharging to a combined sewer shall betrapped. The trap shall be of approved design and locatedin the storm drain line between the sanitary sewer con-nection and the inlet opening into which storm is than one roof drain or other storm receptordrain shall be served by a single trap where the trap islocated so as to receive, through its inlet side, drainagefrom roof drains and water drainage traps shall be below the frostline or within the building.

drain or vent pipe be used as a conductor. Subsoil drains under and around buildings shall be used to collect and drain groundwater. 1101.5.2 Subsoil, Foundation and Absorption

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