Equivalent Moment Coefficient

The equivalent moment coefficient is used to correct the bending moment when checking the stability of the solid web bending member with bending moment acting on the symmetry axis plane, so it is divided into in-plane equivalent moment coefficient and out of plane equivalent moment coefficient. These coefficients can be calculated automatically by program or manually input.

In the dialog box of the program, the default value is 1.0. You can also specify them as other values or as automatic calculation. If the you specify automatic calculation, the program will automatically calculate the equivalent moment coefficient of the member according to the specification in 8.2.2.

Note: When members are pure and weakly braced frames without considering second-order analysis, the coefficient should be taken as 1 without reduction.

At the same time, it is necessary to specify whether there is lateral load in the direction of the main shaft.