Weak axis calculation

The shear resistance calculation is similar to the strong-axis shear resistance calculation, however several modifications are needed in calculation of:

• The design shear force resistance of a joint V_y,Rd for normal bolt:

For weak-axis shear force resistance V_y,Rd the number of bolts n_t ,which are also required to resist tension, and number of bolts n_n ,not required to resist tension, is set to half of the total number of all bolts each. The above applies to the case when a design bending moment M_z,Ed is present. If the design bending moment M_z,Ed is zero, the number of bolts n_t is set to zero and number of bolts n_n is set to number of all bolts.

• The design bearing resistance of a joint F_b,Rd

The endplate F_b,ep,Rd and column flange F_b,cf,Rd component resistances are re-used. No resistance recalculation is done for weak-axis.

• The reduction of shear force resistance V_pl,Rd of the connected beam:

The shear force resistance V_y,Rd of a beam the formula given by EN 1993-1-1 Article 6.2.6 (2) is used, but the final resistance is multiplied by coefficient 0,5.

For further info see chapter: "Shear force resistance".

The additional weak-axis shear unity check is displayed by the check and also linear interpolations for strong and weak-axis shear force components is performed and unity checks calculated if weak-axis shear force resistance V_y,Rd is calculated:

For further info on weak-axis calculation see chapter: "Weak-axis calculation".