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NYC Administrative Code

§ 27-716 — Use of rock support in lieu of underpinning.

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What is NYC AC § 27-716?

Quick Answer

This section allows existing structures founded above new construction to be supported on hard rock instead of using underpinning, sheeting, bracing, or retaining walls. A report from an architect or engineer must confirm the safety of the construction and verify an inspection of the exposed rock. Applies to building owners involved in construction projects.

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

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§ 27-716 Use of rock support in lieu of underpinning.

AC § 27-716

Existing structures founded at a level above the level of adjacent new construction may be supported on hard rock in lieu of underpinning, the use of sheeting and bracing, or the construction of retaining walls, provided that a report by the architect or engineer is submitted substantiating the safety of the proposed construction and verifying that an "in-place" inspection has been made of the rock exposed and of the jointing therein in the excavation.

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