Concrete Girder Code Check T [SPIG]

Template used by the Concrete Girder Code Check to define resistance factors, shear parameters, and time-dependent loss options.

General

Load Combination Table: Previously defined Load Combination table used for the concrete girder code check. A value must be provided.

Design Parameters

[NAME_ALIAS:Φ_f]Resistance factor Tension Controlled Section: Strength reduction factor for tension-controlled reinforced-concrete sections per AASHTO LRFD 5.5.4.2. Default 0.90.

[NAME_ALIAS:Φ_f]Resistance factor Compression Controlled Section: Strength reduction factor for compression-controlled reinforced-concrete sections per AASHTO LRFD 5.5.4.2. Default 0.75 for tied columns.

[NAME_ALIAS:Φ_v]Resistance factor Shear and Torsion in Section: Strength reduction factor for shear and torsion per AASHTO LRFD 5.5.4.2. Default 0.90 for normal-weight concrete.

Procedure for Shear Parameters β and θ [Simplified/General(Eqn)/AppendixB5(Table)]: Method used to compute β and θ. Simplified uses fixed values of β=2.0 and θ=45° per AASHTO 5.7.3.4.1. General computes them per AASHTO 5.7.3.4.2. AppendixB5 reads them from the AASHTO Appendix B5 tables.

Time-Dependent Losses Calc. Method[Approximate/Refined]: Method used to compute prestress losses from creep, shrinkage, and relaxation per AASHTO 5.9.3.

Humidity (%) (Approximate Method): Ambient humidity used by the Approximate time-dependent losses method. Shown as Not Applicable when the Refined method is selected.

Compression Check (Approximate Method)[0.65f'ci/0.45f'c/0.6f'c]: Concrete compressive stress limit applied in service checks under the Approximate method. Not Applicable under Refined.

Tensile Stress Limit (Approximate Method) [0.0948λ√*fci/0.24λ√*fci/0.158λ√*fci/0.19λ√*fci/No Tension before Losses/0.19λ√*fc/0.0948λ√*fc/No Tension after Losses]: Concrete tensile stress limit applied in service checks under the Approximate method. Pick the AASHTO Table 5.9.2.3 value matching the condition being checked.

Section Analysis

Include Haunch?[No/Yes]: If set to Yes, the haunch area is included when computing composite section properties and stresses.

Include Deck Reinforcement?[No/Yes]: If set to Yes, the deck's top/bottom reinforcement is included in composite capacity computations.

Ignore Rebar and Tendon in Section Property Calc?[No/Yes]: Controls whether longitudinal rebar and tendons are included when computing gross section properties (A, I, S). Set to Yes to use the bare concrete section.

Effective Web Width Calculation (Shear) [Use Non-composite Section to Compute/Use Composite Section to Compute/Override with User Input]: Selects the bw used in shear design. The default uses the non-composite section; override lets the user supply bv explicitly.

Section Analysis Refinement (Total Fiber Count): Number of fibers used in the strain-compatibility section analysis. Higher counts improve accuracy but increase run time (roughly 4-5 seconds per code-check station).

Report

Support Lines Used For Span Length Comp.[All/Selection]: Controls which Support Line objects define span boundaries in the code-check report. Use Selection when extra support lines exist that should not be treated as span boundaries.

Selected Support Lines: Manual list of Support Line picks used when the previous option is set to Selection.