54' 1 piece rig of pipe
54' 1 piece rig of pipe
(OP)
Does anyone know if I can rig a piece of pipe 24"round x 54'long in one piece, without crushing? Pipe is sch.10 .250 thickness and comes in 20' lengths. It will be welded with 6011 x 3/16" welding rod.





RE: 54' 1 piece rig of pipe
I think it will be more of a bending issue depending where
you take the lift points from.
Safest bet would be lift them in some sort of cradle.
regards
desertfox
RE: 54' 1 piece rig of pipe
It will not be a problem unless for some reason you have zero tolerance for fress stress bends in your pipe.
You can fix 2 points along the pipe as lift points equidistant from the center point.
The whole question is will the stresses imposed by lifting exceed a percentage of SMYS of the pipe - which your governing code will determine what that % is, the tensile strength of the pipe will be the key factor, but in any case, you should not have to worry.
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: 54' 1 piece rig of pipe
RE: 54' 1 piece rig of pipe
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Plymouth Tube
RE: 54' 1 piece rig of pipe
RE: 54' 1 piece rig of pipe
I think that it will be unstable on a single pick and extremely dangerous.
Regards
desertfox
RE: 54' 1 piece rig of pipe
RE: 54' 1 piece rig of pipe
He has a tall enough crane. But We are not sure the best practice for this pick?
RE: 54' 1 piece rig of pipe
RE: 54' 1 piece rig of pipe
Ah!I thought you were still lifting horizontally.
Lifting from one end wouldn't cause buckling which made me think you were lifting horizontally,anyway can you attach some temporary hooks or flange to your pipe which could be cut off after its inserted into the hole.
A bit more detail of what your trying to do might help others give you an answer.
regards
desertfox
RE: 54' 1 piece rig of pipe
RE: 54' 1 piece rig of pipe
Or perhaps using a sectional pipe of larger diameter as a cradle, lowering it as sections are removed when vertical?
Both of these methods would require separate control of the cables.
Believe it if you need it or leave it if you dare. - Robert Hunter
RE: 54' 1 piece rig of pipe
This will not be a problem, we lift double joints (80' in length) up to 48" dia at a single point (center point). 24" is not a problem, especially picking from the end. Sling it up and lift it in to place.
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: 54' 1 piece rig of pipe
The pipe is sch.10 .250 thickness stainless.
It is going to have two welded joints and it can have a temporary rigging welded to it.
Then it needs to be picked straight up and set down into a pit.
Thanks
RE: 54' 1 piece rig of pipe
I used a free online calculator at this site:-
http://w
I assumed it was a simply supported beam with a uniformly distributed load.
Whilst this ignores the fact at the start of lift, the beam would not be quite horizontal, or that the end on the floor would need to be prevented from sliding which introduces horizontal forces and reactions parallel to the beam during the lift I felt it would give an insight to the stresses and deflections at the start of lift.
The results are posted below:-
Beam Stress and Deflection
Unit Load - q : 5.28 (lb/in)
Total Load : 3421 (lb)
Length of Beam - L : 648 (in)
Moment of Inertia - I : 418 (in4)
Modulus of Elasticity - E : 29000000 (psi)
Perp. distance from neutral axis - y : 12 (in)
Support Force - R1 : 1711 (lb)
Support Force - R2 : 1711 (lb)
Maximum Stress - σ : 7956 (psi)
Maximum Deflection - δ : 1 (in)
regards
desertfox