-58 deg F structural steel
-58 deg F structural steel
(OP)
(cross post with AISC)
Does anyone have any reservations / tips / cautions for a structural steel stand that will be shop welded but then placed into service in an environment (outside) that was given a design temperature of -58 deg F (-50 deg C)?
If it was ASME we would be talking impact testing, etc. Is there anything in AWS or AISC about this situation?
Does anyone have any reservations / tips / cautions for a structural steel stand that will be shop welded but then placed into service in an environment (outside) that was given a design temperature of -58 deg F (-50 deg C)?
If it was ASME we would be talking impact testing, etc. Is there anything in AWS or AISC about this situation?
RE: -58 deg F structural steel
Yes. What is the material? What was the weld metal used for fabrication? Was the stand post weld heat treated? Was there nondestructive testing performed of the fabrication welds? Were the welds fillet or full penetration?
RE: -58 deg F structural steel
ZCP
www.phoenix-engineer.com
RE: -58 deg F structural steel
For low temperature service, you need to;
1. Select a suitable material based on impact test requirements for low temperature service.
2. You need to qualify a weld procedure with impact testing to assure proper selection of filler metal for low temperature service and welding requirements - like preheat and post weld heat treatment (if necessary).
3. You need to specify weld detail to assure adequate stregnth and to avoid any stress concentration (as would ocurr with fillet welds)
4. You need to specify nondestructive testing after fabrication.
RE: -58 deg F structural steel
RE: -58 deg F structural steel
RE: -58 deg F structural steel
If impact (high strain) loads are prevented, is there even a problem? If the stresses due to max loads are low, is there anything to be concerned about?
I am looking for anyone's opinions and experiences.......thanks
ZCP
www.phoenix-engineer.com
RE: -58 deg F structural steel
Another option is to construct the stand out of an austenitic stainless steel. This will virtually eliminate any problem with low temperature service.
RE: -58 deg F structural steel
Hg
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