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Re: Min. and Max. weld lengths

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For minimum and maximum fillet weld lengths see AWS D1.1 Section and  The minimum length of a fillet weld shall be at least four times the nominal size, or the effective size of the weld shall be considered not to exceed 25% of its effective length.  For end-loaded fillet welds with a length up to 100 times the leg dimension, it is allowed to take the effective length equal to the actual length.  When the length of  end-loaded fillet welds exceeds 100 but not more than 300 times the weld size, the effective length shall be determined by the reduction coefficient B (Beta):

B (Beta) = 1.2-.02(L/100w) <_ 1.0

B (Beta) = reduction coefficient
L = actual length of end-loaded weld
w = weld leg size

When the length exceeds 300 times the leg size, the effective length shall be taken as 180 times the leg size.

Thomas Hunt, S.E.

"Jason Christensen" <jason(--nospam--at)>
11/03/2008 09:23 AM
Please respond to seaint
Min. and Max. weld lengths

Can anyone direct me to where or if there are requirements for the minimum and maximum length of a weld.  For example, if using a 1/4” fillet weld, what would be the min and max values?
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