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What is NYC BC § 1817.4.2?

Quick Answer

This section outlines the alternative methods of support that may be utilized instead of underpinning during excavation. It specifies that excavation support systems, such as secant piles and slurry walls, can be employed to restrict movements of adjacent buildings within established thresholds. Applies to construction and excavation activities affecting nearby structures.

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

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1817.4.2 Alternate methods of support.

BC § 1817.4.2

In lieu of underpinning, an excavation support system and/or lateral bracing designed to restrict the movements of the adjacent buildings within the established threshold levels may be installed. Such excavation support systems may consist of secant piles, slurry walls, tangent pile walls, jet grouting, pressed-in continuous sheeting, or similar engineered system.

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