Caesar uses a flange check per NC-3658-3 (a) (2) for static (equation 12). Equation (13) is listed for dynamic bending and torsional moments. Which basically allows twice the dynamic and torsional moments than the static.

So a flange check can be done manually through the use of a spread-sheet using equation 13 to check the resulting dynamic moments. If somebody wanted to do a dynamic check.

Is that reasonable?