Weld Type
Weld Type
(OP)
I'm attaching a 1-1/4 steel plate to a 3/4" steel backing plate. I can use a fillet weld on either side of the 1-1/4" steel plate or use a prepared weld. Does the AISC or AWS have a guide to the minimum fillet weld that should be used based on the plate thickness? and/or is it less costly to use a prepared weld (groove) instead of two large fillet welds?
Dik
Dik





RE: Weld Type
5.14 Minimum Fillet Weld Sizes
The minimum fillet weld size, except for fillet welds used to reinforce groove welds, shall be as shown in Table 5.8. The minimum fillet weld size shall apply in all cases, unless the design drawings specify welds of a larger size.
Table 5.8
Minimum Fillet Weld Sizes (see 5.14)
Base-Metal Thickness (T)1 Minimum Size of Fillet Weld2
T ≤ 1/4 1/8 (Note 3)
1/4 < T ≤ 1/2 3/16
1/2 < T ≤ 3/4 1/4
3/4 < T 5/16
Notes:
1. For non-low-hydrogen processes without preheat calculated in
conformance with 3.5.2, T equals thickness of the thicker part
joined; single-pass welds shall be used.
For non-low-hydrogen processes using procedures established to
prevent cracking in conformance with 3.5.2 and for low-hydrogen
processes, T equals thickness of the thinner part joined; single-pass
requirement shall not apply.
2. Except that the weld size need not exceed the thickness of the
thinner part joined.
3. Minimum size for cyclically loaded structures shall be 3/16 in. [5 mm].
RE: Weld Type
Dik
RE: Weld Type
Best regards - Al
RE: Weld Type
Dik
RE: Weld Type