Process Loads in Industrial Buildings
Process Loads in Industrial Buildings
(OP)
Hi,
I am designing an Industrial Building with truss roof systems. There are pipes hung from the trusses and these make up the process loads. Should these loads be treated as dead load or live load? Does any part of the code talks about this?
Thanks
I am designing an Industrial Building with truss roof systems. There are pipes hung from the trusses and these make up the process loads. Should these loads be treated as dead load or live load? Does any part of the code talks about this?
Thanks






RE: Process Loads in Industrial Buildings
DaveAtkins
RE: Process Loads in Industrial Buildings
These pipes can move around. They might pull the pipe off from an area and fix it somewhere else later in the day. So shouldn't this be a Live Load? I am trying to look through the codes if I can find anything, but no luck.
RE: Process Loads in Industrial Buildings
Dik
RE: Process Loads in Industrial Buildings
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
www.americanconcrete.com
RE: Process Loads in Industrial Buildings
I agree that the flexibility Teh mentions is important, but I provide that flexibility by applying a load (5psf, for example) across the entire building. If you want more flexibility, use a higher load, rather than a higher load factor.
RE: Process Loads in Industrial Buildings
You could just make this all a moot point by using ASD and then it doesn't generally matter if it's dead or live load.
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
www.americanconcrete.com
RE: Process Loads in Industrial Buildings
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: Process Loads in Industrial Buildings
Also, you normally will have pipe stress engineers who will tell you if pipe friction needs to be considered. If there is only a few hundred lbs of Force on the structure then no you will not need to consider it. If there is a couple thousand lbs of friction then you will be considering it. This also depends on the size of the piping because if you are supporting a 2" pipe you won't get a lot of normal force to create friction. Anything over an 8 inch pipe should have stress ran on the pipe and friction considered. Some small pipe supports will have a material that's friction factor is lower than ice skates on a skating rink. Pretty interesting that they can create a material that is practically frictionless. Of course that would have to be specified by mechanical and piping engineers.
As far as themighty, I agree that there would be some live load involved but should be negligible on small pipe supports, but on large pipe racks live load should be considered because of the fact of there will be people changing out pipe. If you are designing a large pipe rack, check out the structural requirements in the PIP structural criteria, it will tell you exactly what you need.
RE: Process Loads in Industrial Buildings
RE: Process Loads in Industrial Buildings
I'd get with your piping group. You never know what they have in mind.
RE: Process Loads in Industrial Buildings