1812.1.2.1 Design cracking moment.
BC § 1812.1.2.1
The design cracking moment (ØM n ) for a cast-in-place deep foundation element not enclosed by a structural steel pipe or tube shall be determined using the following equation: (Equation 18-6) where: f 'c = Specified compressive strength of concrete or grout, psi S m = Elastic section modulus, neglecting reinforcement and casing, cubic inches













