Chapter 18A — SOILS AND FOUNDATIONS

Section 1810A — DEEP FOUNDATIONS

2025 California Building Code (Title 24, Part 2) · 2025 edition · ingested 2026-07-07 · California

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1810 A .1 General. Deep foundations shall be analyzed, designed, detailed and installed in accordance with Sections 1810 A .1 through 1810 A .4. 1810 A .1.1 Geotechnical investigation. Deep foundations shall be designed and installed on the basis of a geotechnical investigation as set forth in Section 1803 A . 1810 A .1.2 Use of existing deep foundation elements. Deep foundation elements left in place where a structure has been demolished shall not be used for the support of new construction unless satisfactory evidence is submitted to the building official, which indicates that the elements…