How does RAM Connection calculate the Demands in the Column Cap connection?Here is example Column Cap connection where a 4x4 in column is used:
The demands are calculated in the wall of the HSS column, similar to any moment connection in a Beam-to-Column Flange configuration. In this particular case, we have:
Moment : 10.6 [Kip*ft]Axial : 1.4 [Kip]
so, we calculate the maximum tension Puf:
Axial / 2 + Moment/Arm ... the arm in this case is 4[in]
-1.4[kip]/2.0 + 10.6[Kip*ft]/0.3333[ft] = - 0.7 + 31.81 = 31.1 [Kip]
So, for the other checks, that are considered in compression the calculation is similar but with inverted sign-1.4[kip]/2.0 - 10.6[Kip*ft]/0.3333[ft] = - 0.7 - 31.81 = 32.5 [Kip]
2.00 [kip] demand is a shear force taken from the Loads table.