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Re: Electrode Strength[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)seaoc.org
- Subject: Re: Electrode Strength
- From: Rick.Drake(--nospam--at)fluordaniel.com
- Date: Wed, 10 Sep 1997 11:18:00 -0400
In response to the Weld Electrode Strength thread I offer the following additional consideration: The weld process is important to the design engineer if the fabricator will be using the SMAW process for fillet welds. The AISC specifications (Section J.2.a in both ASD and LRFD Specs) allow the use of a more generous effective throat for this process than for the SAW process. This is independent of the electrode specified tensile strength. If your design requires fabrication of plate girders (bridges, transfer beams, etc.), I suggest you work with the fabricator to identify the process he intends to use. He may elect to use the automated, higher quality SMAW process. Using the effective throat appropriate for the SMAW process, you will end up with smaller fillet welds than the SAW process. Remember the volume of weld material is proportional to the weld size squared. Unless you are up against the AISC minimum fillet weld sizes, you can save your client some money by using either t or 0.707t + 0.11 instead of 0.707t for the effective throat. Rick Drake, SE Fluor Daniel, Inc.
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