View Q&A

Greetings MwRSF folks.

Tonight's email is to ask for clarification regarding required welding processes for a side-mounted weak-post guardrail system. The report is:
https://mwrsf.unl.edu/reportresult.php?reportId=293&search-textbox=MGS%20weak%20post

We have attached the following to this email for reference:
• MGS-2.4_2016-01-15.pdf
• SGR53_R9.pdf
• MGS-2.4_2016-01-15 (TRN Comments).pdf

Our shop is indicating that "EX70xx" shown in the tail of the weld symbols on the attached Ohio DOT drawings is specific to a stick welding process. Our shop(s) utilize a GMAW (commonly called MIG) welding process – which is wire fed vs a stick welding (typically also called SMAW)

The same "E70xx" shown on the ODOT drawings in the tail of the weld symbols are also shown on the attached MwRSF drawing and the drawings within Report No. TRP-03-277-14. Would MwRSF allow welding processes which are comparable as the call out symbols of the MwRSF drawings but which utilize a different process than stick welding?

Please advise your thoughts. Or – if I can provide additional information, please let me know.    

We used to specify our weld specifications with the “ex70xx” note, but have stopped doing that for our more recent system details.  I believe it was there previously to match the process that a local fabrication shop was utilizing.  We now leave the note off so that the welds can be made with any appropriate process.  The welding process utilized to fabricate the socket assemblies for the system you are inquiring about should not matter.  Sorry for the confusion.