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What is NYC BC § 1803.5.1?

Quick Answer

This section mandates that when a foundation design depends on rock for support, a sufficient number of rock corings must be drilled to evaluate the rock's competency and load-bearing capacity, extending at least 10 feet below the lowest bearing level. Applies to building owners involved in foundation design.

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

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1803.5.1 Bedrock support.

BC § 1803.5.1

Where the foundation design relies on rock to support footings, deep foundations or caisson sockets, or permanent prestressed rock anchors, a sufficient number of rock corings shall be drilled to sufficient depths to assess the competency of the rock and its load-bearing capacity, but no less than 10 feet (3048 mm) below the lowest level of bearing.

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