## Function

- Generate a table summarizing the structural adequacy for the webs in beams with longitudinal stiffeners in the cross-section. The table contains two tabs to show the summary for the yielding of the web panels, the buckling of web panels, and longitudinal web stiffeners.

## Call

From the main menu, select **[Rating] tab > [Type : Steel Bridge] > [Assessment Code : CS454/20] > [Results] group > [Assessment Result Tables] >**** [Web Panel Reserve Factor (Beams with L. Stiffeners)]**

## Input

**1. Web Yielding tab**

**Element** : Element ID

**Part** : The i- or j-end of the element, giving the Node ID at that end in square brackets [Node ID]

**Rating Case** : The relevant Load Combinations for Assessment.

**Sig_yw** : The nominal yield stress for the web material.

**Sig_1e_SV** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to SV load model.

**Tau_SV** : The average shear stress due to SV load model.

**Sig_1e_DL** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to combined dead load and superimposed dead load.

**Tau_DL** : The average shear stress due to combined dead load and superimposed dead load.

**Sig_1e_ST** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to ALL Model 2 loading.

**Tau_ST** : The average shear stress due to ALL Model 2 loading.

**A** : Structural Adequacy – calculated as the assessment resistance over the assessment load effects (RA*/SA*).

**Psi** : Reserve Factor against a special vehicle load model with the associated standard vehicle loading. The symbol hyphen (-) is shown when the shear directions are different between resistance and shear force due to special vehicle.

**Psi*** : Reserve Factor against a special vehicle load model without the associated standard vehicle loading. The symbol hyphen (-) is shown when the shear directions are different between resistance and shear force due to special vehicle.

**Check** : An overall indication whether the section passed all checks and is OK or Not Good (NG).

Structural adequacy (A), Psi, and Psi* are calculated as follows. The value of Sig_2 is assumed to be zero.

Psi x S* + SD* + SST* = RA*, Psi is determined with back-calculation from the equation.

Psi* x S* + SD* = RA*, Psi* is determined with back-calculation from the equation.

**2. Web Buckling tab**

**Element** : Element ID

**Part** : The i- or j-end of the element, giving the Node ID at that end in square brackets [Node ID]

**Rating Case** : The relevant Load Combinations for Assessment.

**Stiffener/Flange** : Components for the assessment.

**Sig_yw** : The nominal yield stress for the web material.

**K1** : Axial coefficient

**Kb** : Bending coefficient

**Kq** : Shear coefficient

**Sig_1_SV** : The mean longitudinal stress on a cross-section of the panel due to SV load model.

**Sig_b_SV** : The average values of the maximum longitudinal stress due to in-plane bending of the individual panel due to SV load model.

**Tau_SV** : The average shear stress due to SV load model.

**Sig_1_DL** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to combined dead load and superimposed dead load.

**Sig_b_DL** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to combined dead load and superimposed dead load.

**Tau_DL** : The average shear stress due to combined dead load and superimposed dead load.

**Sig_1_ST** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to ALL Model 2 loading.

**Sig_b_ST** : The summation of the longitudinal stress (Eq. a, Clause 9.11.3, BS5400:3) due to ALL Model 2 loading.

**Tau_ST** : The average shear stress due to ALL Model 2 loading.

**A** : Structural Adequacy – calculated as the assessment resistance over the assessment load effects (RA*/SA*).

**Psi** : Reserve Factor against a special vehicle load model with the associated standard vehicle loading. The symbol hyphen (-) is shown when the shear directions are different between resistance and shear force due to special vehicle.

**Psi*** : Reserve Factor against a special vehicle load model without the associated standard vehicle loading. The symbol hyphen (-) is shown when the shear directions are different between resistance and shear force due to special vehicle.

**Check** : An overall indication whether the section passed all checks and is OK or Not Good (NG).

Structural adequacy (A), Psi, and Psi* are calculated as follows.

Psi x S* + SD* + SST* = RA*, Psi is determined with back-calculation from the equation.

Psi* x S* + SD* = RA*, Psi* is determined with back-calculation from the equation.

**3. Stiffener tab**

**Element** : Element ID

**Part** : The i- or j-end of the element, giving the Node ID at that end in square brackets [Node ID]

**Rating Case** : The relevant Load Combinations for Assessment.

**Sig_ls** : The limiting stiffener stress.

**Sig_se_SV** : The stress at the effective stiffener area (Clause 9.11.5.2, BS5400:3) due to SV load model.

**Sig_se_DL** : The stress at the effective stiffener area (Clause 9.11.5.2, BS5400:3) due to combined dead load and superimposed dead load.

**Sig_se_ST** : The stress at the effective stiffener area (Clause 9.11.5.2, BS5400:3) due to ALL Model 2 loading.

**A** : Structural Adequacy – calculated as the assessment resistance over the assessment load effects (RA*/SA*).

**Psi** : Reserve Factor against a special vehicle load model with the associated standard vehicle loading. The symbol hyphen (-) is shown when the shear directions are different between resistance and shear force due to special vehicle.

**Psi*** : Reserve Factor against a special vehicle load model without the associated standard vehicle loading. The symbol hyphen (-) is shown when the shear directions are different between resistance and shear force due to special vehicle.

**Check** : An overall indication whether the section passed all checks and is OK or Not Good (NG).

Structural adequacy (A), Psi, and Psi* are calculated as follows.

Psi x S* + SD* + SST* = RA*, Psi is determined with back-calculation from the equation.

Psi* x S* + SD* = RA*, Psi* is determined with back-calculation from the equation.