Pier Footing Code Check T [SIG]

Procedures for Shear Resistance Parameters β and θ[Simplified/Generalized/AppendixB5]: The simplified method follows the AASHTO 5.7.3.4.1 standard and uses fixed values of 2.0 for β and 45 degrees for θ. Large-scale experiments (Shioya et al., 1989) have shown that using fixed values of β and θ, such as 2 and 45 degrees, can be seriously unconservative for large members without transverse reinforcement. As a result, it is important for users to exercise caution when using the general procedure. The preferred method for computing β and θ may be determined either through the general procedure or through the provisions outlined in AASHTO Appendix B5. When the user selects the general procedure, the computation follows AASHTO 5.7.3.4.2 to calculate the values of β and θ. The method outlined in Appendix B5 utilizes tabulated values of β and θ instead of using equations 5.7.3.4.2-1, 5.7.3.4.2-2, and 5.7.3.4.2-3 to compute these values.

Include axial effects on flexure and shear computation: There are situations where small tension or compression forces act on pier cap finite elements, which can impact computations such as flexure, rebar stress, and shear capacity. To exclude axial forces from these computations, users can select "No". However, if the pier cap has a tendon, this option should never be disabled.

Flexure Sign(Effective Shear Depth)[Use Critical Shear Concurrent Bending Moment/User Positive Flexure/Use Negative Flexure/Use Pos and Neg Flexure]:This option allows the user to choose which flexure type should be used to compute the effective shear depth, as the value may differ under positive or negative bending. By selecting "Use Critical Shear Concurrent Bending Moment", the library component finds the critical shear force from all limit states and checks its concurrent bending moment, using either positive or negative flexure according to its sign. Choosing "Positive Flexure" or "Negative Flexure" forces the library object to compute the effective shear depth without considering any analysis results for the flexure sign. Finally, selecting "Use Pos and Neg Flexure" computes the effective shear depth for both flexures, and the critical one is used.