Parallel Tailing Beam/Skirt Stiffening Beam Internal Moment Coefficient Kr and Kt

[jigar305]

Can anyone share how can we calculate Kr and Kt for Parallel Beams configuration as shown on page 685 & 687 of Pressure Vessel Design manual 4th Edition by Denis Moss. refer below snap for it? or reference to calculate from Roark formula.

it is being calculate in AutoPipe Vessel. but no formula mentioned.

 

[JoshRanch]

AutoPIPE Vessel uses internal tables and FEA-backed data, It's a proprietary FEA-based database for support configurations.

I suppose you could validate using Roaks, maybe if you share some details i can check in solid sim