## Function

- Generate a table summarizing the structural adequacy and reserve factors for the combined bending and shear resistance of the members based on the assessment checks for ULS. Related clauses are 9.9.3.1, 9.9.3.2, BS5400:3.

## Call

From the main menu, select **[Rating] tab > [Type : Steel Bridge] > [Assessment Code : CS454/20] > [Results] group > [Assessment Result Tables] >**** [Combined Bending and Shear Reserve Factors]**

## Input

**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. Assessment check is performed for 12 sets of concurrent forces for each load combination.

**M_D** : The bending resistance of the beam determined in accordance with 9.9.1.

**M_f** : Ff df /(γm γf3)

**V_D** : The shear capacity of the panel under pure shear determined in accordance with 9.9.2.2.

**V_R** : The value of V_D obtained by taking mfw=0 when applying 9.9.2.2.

**M_SV** : The bending moment due to SV load model.

**V_SV** : The shear force due to SV load model.

**M_DL** : The bending moment due to combined dead and superimposed dead load.

**V_DL** : The shear due to combined dead and superimposed dead load.

**M_ST** : The bending moment due to ALL Model 2 loading.

**V_ST** : The shear 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 and reserve factors, Psi, and Psi* are calculated as follows. The hyphen (-) symbol will be shown when equations c) and d) of 9.9.3.1, BS5400:3 are not required,

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

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