For PT bridges the shear capacity is calculated at each POI. The shear reinforcement as input by the user is used to calculate the capacity. If the shear capacity is not enough, then CIP RC/PT Girder calculates the amount of shear reinforcement needed to satisfy the shear capacity and points it out with a flag in the report. If the required stirrup area is less than the minimum stirrup, then the minimum value is reported. If this value is larger than the maximum allowed value by the specifications, then the maximum value is reported along with its corresponding capacity, and a flag indicating that the section is inadequate. The best solution is to use a thicker web for this case.

The shear capacity demand is based on the Ultimate load combinations requested in Final. However, it should be noted that the combined shear requirement includes the secondary post-tensioning effect only, and not the primary PT moment. The secondary shear is calculated based on the reactions produced by the post-tensioning, i.e., vertical reaction values.

CIP RC/PT Girder checks the shear capacity at all POI locations, but does not determine the location of the critical section for shear check.

In the case of a pot-tensioned section, CIP RC/PT Girder reduces the web thickness by a specified fraction of the PT duct diameter, provided that the duct is passing though the web.