1810.6.2 Out of plumb tolerance.
BC § 1810.6.2
If the axis of any deep foundation is installed out of plumb or deviates from the specified batter by more than 4 percent, the design of the foundation shall be modified to resist the resulting vertical and lateral forces. In types of deep foundations for which subsurface inspection is not possible, this determination shall be made on the exposed section of the deep foundation, which at the time of checking axial alignment, shall not be less than 2 feet (609.6 mm) in length. In deep foundations that can be checked for axial alignment below the ground surface, the sweep of the deep foundation axis shall not exceed 4 percent of the embedded length.
