// CODE SNIPPET
P3007.2 Building Drains Below Sewer (Building Subdrains)
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Building drains which cannot be discharged to the sewer by gravity flow shall be discharged into a tightly covered and vented sump from which the contents shall be lifted and discharged into the building gravity drainage system by automatic pumping equipment.
The system of drainage piping below the sewer level shall be installed and vented in a manner similar to that of the gravity system. Only such drains that must be lifted for discharge shall be discharged into sumps. All other drains shall be discharged by gravity.
Exception:
Macerating toilet systems shall be permitted as an alternate to the sewage pump or ejector system. The macerating toilet shall comply with ASME A 112.3.4 or CSA B 45.9 and shall be installed in accordance with the manufacturers' instructions.
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