# 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.


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