This criterion is only applied to cross sections containing bonded tendons.

For a cantilever span (as determined by the declaration of supports in the design strip segment), this criterion is ignored if the section location is outside of L/3 of the support.

For a regular span (as determined by the declaration of supports in the design strip segment), this criterion is ignored if the section location is in one of the two regions between L/6 and L/3 from a support. It is assumed that these regions will contain the peak moments and hence the first part of a span to crack.

The cracking is assumed to be top (negative moment) or bottom (positive moment) based on the "Min. Reinforcement Pattern" selected in the design strip segment or design section.

See Cracking Moment Used in Design Calculations for a theoretical discussion of the cracking moment.

Modulus of rupture (f_cr) is $7.5\sqrt{{f^{\prime }}_c}$ times the lightweight concrete factor. The maximum f ’_c for the cross section is used.

Lightweight concrete factor is calculated in accordance with 8.6.1 of ACI 318-08. The maximum Wc for the cross section is used.

The "twice that required" criterion is not checked.