For span segment strips, this criteria is only applied when the span ratio is in the middle one-third of the span.

For a span with no supports (as determined by the declaration of supports in the design strip segment), this criterion is always applied.

Gross-section, linear-elastic stress calculations are used.

For sections with multiple concrete strengths, the minimum concrete strength is used to determine the limiting stress.

For sections with multiple concrete strengths, approximate extreme fiber stresses and centroid stresses are calculated and reported.

If $2\sqrt{{f^{\prime }}_c}$ is exceeded the entire tensile load, N_c, is taken by bonded reinforcement.

User defined reinforcement on the appropriate face and bonded post-tensioning that is in the tension zone is counted toward the requirement. Vector components are taken of reinforcement and bonded post-tensioning that are not orthogonal to the cross section. Usable bonded tendon stresses are limited to the minimum of (f_py – f_se), (0.5 f_py) and 30 ksi.

Reinforcing bar stresses are limited to the minimum of (0.5 f_py) and 30 ksi.

The reinforcement is only provided where stresses exceed $2\sqrt{{f^{\prime }}_c}$, the minimum length requirements of 18.9.4.1 are not considered.

No check is made to ensure that the structure is post-tensioned.