What is preferable to place: 3/16" or 1/4" fillet weld?
What is preferable to place: 3/16" or 1/4" fillet weld?
(OP)
What's preferable for a steel worker to place; 3/16" or 1/4" fillet weld?
We're attaching auxiliary steel to existing building steel to support some lightweight pipe (<1 kip at most support points). For our application either size is sufficient as 3/16" fillet weld provides 4.2 kips/in strength capacity for longitudinally loaded weld and 6.3 kips/in for transversely loaded weld.
We're attaching auxiliary steel to existing building steel to support some lightweight pipe (<1 kip at most support points). For our application either size is sufficient as 3/16" fillet weld provides 4.2 kips/in strength capacity for longitudinally loaded weld and 6.3 kips/in for transversely loaded weld.






RE: What is preferable to place: 3/16" or 1/4" fillet weld?
RE: What is preferable to place: 3/16" or 1/4" fillet weld?
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RE: What is preferable to place: 3/16" or 1/4" fillet weld?
But does anybody have a copy with a table of contents? I have a copy but it seems like they forgot a table of contents
Anybody have a place to download and print a table of contents of "Design of Welded Structures"
Jeff
Pipe Stress Analysis Engineer
www.xceed-eng.com
RE: What is preferable to place: 3/16" or 1/4" fillet weld?
RE: What is preferable to place: 3/16" or 1/4" fillet weld?
TOC attached.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: What is preferable to place: 3/16" or 1/4" fillet weld?
Thank you so much!
Jeff
Pipe Stress Analysis Engineer
www.xceed-eng.com
RE: What is preferable to place: 3/16" or 1/4" fillet weld?
I'm going to exaggerate a little here.
Assume you have a bad welder who varies the weld leg randomly 25% up and down for a 1/4 inch lengths of weld bead.
A 1/4 fillet weld is 2 inches long, with two parts 25% too high (5/16 leg), and two parts 25% too low (3/16). You have two sections of a short weld significantly under strength.
The 3/16 weld is longer than the 1/4 weld (by at least 6.3/4.2), but has smaller variations in leg height over a shorter total length of bad weld.
But that same bad welder may also try to go too fast on the smaller weld and not get a much penetration into the base metal.
RE: What is preferable to place: 3/16" or 1/4" fillet weld?
He indicates that due to the cost of the weld filler material, a long thin weld is more economic.
It seems to me that labor has a more significant impact that the materials, and a short thick weld would take less time, and therefore be the more economic option.
Ultimately, either weld is a single pass and I think we're wondering about pennies here.