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NYC Plumbing Code

§ 1114.4.1 — § 1114.4.1

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What is NYC PC § 1114.4.1?

Quick Answer

This section mandates that all drywells include a grit chamber as part of their system, detailing specific construction requirements such as access cover size, load support, and dimensional standards for the chamber. Applies to building owners responsible for drywell installations.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1114.4.1 Grit chamber.

PC § 1114.4.1

All drywells shall contain a grit chamber as part of the drywell system. Grit chambers shall be constructed in accordance with the following requirements: 1. Solid access cover with a minimum diameter of 15 inches (381 mm).

2.Grit chamber designed to support the maximum anticipated load.

3.Outlet invert elevation shall be a minimum of 1 inch (25 mm) lower than the lowest inlet elevation.

4.The sump shall be a minimum of 18 inches (450 mm) or two times the largest inlet pipe diameter, whichever is greater, as measured to the outlet invert elevation.

5.The interior dimensions shall be a minimum of 18 inches (450 mm) or four times the largest inlet pipe diameter whichever is greater.

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