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The gross cross-sectional area of the structural steel core or bundled center reinforcing shall not exceed 30 percent of the gross area of the caisson pile. For reinforcing placed at the perimeter of the caisson pile, the area of the reinforcing shall not exceed 8 percent of the area inside the casing. Minimum concrete cover shall be in accordance with Table 1810.2.13.
1812.7.4.1 Splicing of Steel Reinforcing
Steel reinforcing shall be spliced in accordance with the requirements of ACI 318.
1812.7.4.2 Seismic Reinforcement
Where a structure is assigned to Seismic Design Category C or D in accordance with Section 1613, the reinforcement requirements of Section 1812.6.4.1 shall be met.

Related Code Sections

1810.7.4 Soils and Foundations, Structural Core and Steel Reinforcing
The gross cross-sectional area of the structural steel core or bundled center reinforcing shall not exceed 30 percent of the gross area ...
1812.7.4 Soils and Foundations, Structural Core and Steel Reinforcing
The gross cross-sectional area of the structural steel core or bundled center reinforcing shall not exceed 30 percent of the gross area ...
6.2.5.2 Structural Analysis,
a concrete core encased by structural steel or within transverse reinforcement surrounding a structural steel core shall be permitted to be used ...
1812.7.1 Soils and Foundations, Construction
of Class 1c or better and filled with concrete or grout. The caisson pile shall have a full-length structural steel core, full length steel reinforcing ...
6.2.5 Structural Analysis,
) Longitudinal bars located within a concrete core encased by structural steel or within transverse reinforcement surrounding a structural steel core ...