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NYC Building Code

§ 1817.3.4 — § 1817.3.4

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What is NYC BC § 1817.3.4?

Quick Answer

This section outlines the requirements for conducting a subsurface investigation when using in situ Class 1a, 1b, or 1c rock as a support method. It mandates the collection of site-specific data regarding the rock's properties and the provision of recommendations for necessary stabilization. Applies to building owners utilizing rock support methods in construction.

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

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1817.3.4 Additional requirements for use of rock support.

BC § 1817.3.4

Where in situ Class 1a, 1b, or 1c rock is proposed for use in place of constructed methods of support, a subsurface investigation shall be conducted to assess the properties of the rock. Site-specific data shall be obtained to determine the predominant strike and dip of the joints, foliation, and/or other discontinuities in the rock. Recommendations for any rock stabilization necessary for the proposed work shall be provided.

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