Where should i put the weld to the top of the pipe or to the bottom?
Where should i put the weld to the top of the pipe or to the bottom?
(OP)
I need to join a 19feet 8" pipe to another piece of 8"pipe. The pipe is to be vertical with at least 15ft in the water.
It is being used for geotechnical survey.
I am only getting 19ft lengths and i need a total length of 23ft.
The pole would be subjected to drag force due to water. The lower horizontal snub would form a pivot.
Should i weld the pipes together at the top A above the water or below the water at B. Please see attached image.





RE: Where should i put the weld to the top of the pipe or to the bottom?
RE: Where should i put the weld to the top of the pipe or to the bottom?
Why are we putting it at A as opposed to B? This is my trend of thought, the pole would be subjected to a bending moment about the fulcrum/pivot.
By putting the weld close to the bottom, am I minimizing the chance that the pole would break at this point?
RE: Where should i put the weld to the top of the pipe or to the bottom?
RE: Where should i put the weld to the top of the pipe or to the bottom?
The pole would be in the water for roughly 6 weeks and would be painted, so corrosion should be minimal
With respect to the bending loads, won't it be subjected at more bending load at A rather than at B?
RE: Where should i put the weld to the top of the pipe or to the bottom?
RE: Where should i put the weld to the top of the pipe or to the bottom?
RE: Where should i put the weld to the top of the pipe or to the bottom?
Regards,
Mike
RE: Where should i put the weld to the top of the pipe or to the bottom?
Sorry, I couldn't resist poking this one with a sharp stick.
Best regards - Al