Longitudinal

• Required As

  The required area of steel is calculated for top and bottom flange based on maximum negative and positive moment at the location of each POI. Ultimate Limit State combinations - ULS Combination 1 and ULS Combination 2 -are considered in this evaluation . CIP RC/PT Girder first calculates the capacity provided by the PT tendon, and if the demand is lower, required rebar is reported as zero. If the demand is higher, required additional rebar is calculated to satisfy the demand. For this calculation, the basic ultimate reinforced section property ultimate strength calculation is used assuming a Whitney stress block. If the model rebar is to be included, then the initial capacity calculation will include the PT and the mild reinforcement.

  This required rebar calculation does not check for the over-reinforced condition. cracking moment is not checked, otherwise included in the calculation of the demand. In the case that the section is too small to carry the demand, the design might fail. This is calculated and flagged in CIP RC/PT Girder, however is only reported in the required As design graph as a