reuse of production piping for structural purposes
reuse of production piping for structural purposes
(OP)
I have been asked to consider analyzing structural trusses (used mostly for farm and ranch structures, not for human habitation, to the best of my knowledge at this time) and providing a letter of certification and stamped calculations for the trusses and columns. I would not have a problem with this in general, except that it seems to be a bit of a backyard industry. The pipes are salvaged from petroleum production, ostensibly grade 40 and 80. I have a request into the AISC to see if there are any criteria they can give me for this. Has anyone run into this? I am not sure it seems like a good idea to use pipe that may be coated with contaminants, or have corrosion concealed inside. I did find a used pipe classification by NASPD but I could not find anything that gives me anywhere to look for suitable (or unsuitable) uses of a pipe classified as used.
thanks,
thanks,
RE: reuse of production piping for structural purposes
RE: reuse of production piping for structural purposes
RE: reuse of production piping for structural purposes
RE: reuse of production piping for structural purposes
Just my humble two cents worth.
Regards
VOD
RE: reuse of production piping for structural purposes
RE: reuse of production piping for structural purposes
RE: reuse of production piping for structural purposes
Been there, done that. Not uncommon! Consider more than wall thickness (S/40 or S/80 or whatever). Much production tubing / pipe has experienced some small amount of corrosion, internal & external; thus, use thinist recorded, or require UT testing and rejection of anything below a threshold value. Consider grade too; if unknown, either have it tested or assume lowest available (Grade A if line pipe, or J-55 if downhole tubing). Consider wind loading per ASCE 7-98. Though one can calculate forces and moments and shears, etc., do not forget to consider wind bracing, both while structure is being built and during use.