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NYC Building Code

§ 1817.7.1.5 — § 1817.7.1.5

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What is NYC BC § 1817.7.1.5?

Quick Answer

This section prohibits pit excavation below the water table unless a dewatering system is installed beforehand. The dewatering system must be tested to ensure the water table is sufficiently lowered before excavation begins. Applies to building owners engaged in excavation work below the water table.

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

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1817.7.1.5 Excavation below the water table.

BC § 1817.7.1.5

Pit excavation shall not proceed below the water table. If the depth of the underpinning requires excavation below the existing water table, a dewatering system shall be installed prior to the start of the excavation. The dewatering system shall be tested via test pit or piezometer to confirm that the water table has been sufficiently drawn down prior to the start of the pit underpinning work.

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