Combinded Stress Steel Pipe - AISC 13th Ed
Combinded Stress Steel Pipe - AISC 13th Ed
(OP)
A hollow pipe section subject to axial, shear, torsion, and bending in 2 perpendicular directions.
How should the unity check be made in accordance with AISC 13?
I would think it would be Pr/Pc + Mr/Mc + (Tr/Tc + Vr/Vc)^2 where Mr=sqrt(Mx^2+My^2)
However this doesn't seem clear in AISC 13th it actually appears that it should be:
Pr/Pc + Mx/Mc + My/Mc + (Tr/Tc + Vr/Vc)^2
This seems conservative but what do i know?
subscript r = required strength
subscript c = capacity of section
Thanks!
How should the unity check be made in accordance with AISC 13?
I would think it would be Pr/Pc + Mr/Mc + (Tr/Tc + Vr/Vc)^2 where Mr=sqrt(Mx^2+My^2)
However this doesn't seem clear in AISC 13th it actually appears that it should be:
Pr/Pc + Mx/Mc + My/Mc + (Tr/Tc + Vr/Vc)^2
This seems conservative but what do i know?
subscript r = required strength
subscript c = capacity of section
Thanks!
EIT
www.HowToEngineer.com






RE: Combinded Stress Steel Pipe - AISC 13th Ed
RE: Combinded Stress Steel Pipe - AISC 13th Ed
Sounds like a triaxial stress state to me...
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Combinded Stress Steel Pipe - AISC 13th Ed
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Combinded Stress Steel Pipe - AISC 13th Ed
RE: Combinded Stress Steel Pipe - AISC 13th Ed
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Combinded Stress Steel Pipe - AISC 13th Ed
I can kind of see what Pad is getting at but I think ultimately, if you resolve the forces that are causing moments in different directions, you will simply have one moment on the pipe.
RE: Combinded Stress Steel Pipe - AISC 13th Ed
If you combine the force components into a resultant then solve for the moment isn't that the same as Mr=sqrt(Mx^2+My^2)? Or are am I missing something?
EIT
www.HowToEngineer.com
RE: Combinded Stress Steel Pipe - AISC 13th Ed
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Combinded Stress Steel Pipe - AISC 13th Ed
You had me really questioning myself!
RE: Combinded Stress Steel Pipe - AISC 13th Ed
Michael.
Timing has a lot to do with the outcome of a rain dance.