AWS D1.1/D1.1M:2020 CLAUSE 10.

TUBULAR STRUCTURES

Table 10.15
Visual Inspection Acceptance Criteria (see 10.24)
Discontinuity Category and Inspection Criteria Tubular Connections (All Loads)
(1) Crack Prohibition
X
Any crack shall be unacceptable, regardless of size or location.
(2) Weld/Base Metal Fusion
Complete fusion shall exist between adjacent layers of weld metal and between weld metal and X
base metal.
(3) Crater Cross Section
All craters shall be filled to provide the specified weld size, except for the ends of intermittent X
fillet welds outside of their effective length.
(4) Weld Profiles
X
Weld profiles shall be in conformance with 1.23.
(5) Time of Inspection
Visual inspection of welds in all steels may begin immediately after the completed welds have
cooled to ambient temperature. Acceptance criteria for ASTM A5 l 4, A517, and A 709 Grade X
HPS 1 00W [HPS 690W] steels shall be based on visual inspection performed not less than 48
hours after completion of the weld.
(6) Undersized Welds
The size of a fillet weld in any continuous weld may be less than the specified nominal size (L)
without correction by the following amounts (U):
L, u,
specified nominal weld size, in [mm] allowable decrease from L, in [mm]
:":3/16[5] ::; 1/16 [2] X
1/4 [6] ::; 3/32 [2.5]
::". 5/16[8] :":1/8 [3]
In all cases, the undersize portion of the weld shall not exceed 10% of the weld length. On
web-to-flange welds on girders, underrun shall be prohibited at the ends for a length equal to
twice the width of the flange.
(7) Undercut
(A) For material less than 1 in [25 mm] thick, undercut shall not exceed 1/32 in [1 mm], with
the following exception: undercut shall not exceed 1/16 in [2 mm] for any accumulated length
up to 2 in [50 mm] in any 12 in [300 mm]. For material equal to or greater than 1 in [25 mm]
thick, undercut shall not exceed 1/16 in [2 mm] for any length of weld.
(B) In primary members, undercut shall be no more than 0.01 in [0.25 mm] deep when the
weld is transverse to tensile stress under any design loading condition. Undercut shall be no X
more than 1/32 in [1 mm] deep for all other cases.
(8) Porosity
(A) CJP groove welds in butt joints transverse to the direction of computed tensile stress shall
have no visible piping porosity. For all other groove welds and for fillet welds, the sum of the
visible piping porosity 1/32 in [1 mm] or greater in diameter shall not exceed 3/8 in [10 mm] in
any linear inch of weld and shall not exceed 3/4 in [20 mm] in any 12 in [300 mm] length of
weld.
(B) The frequency of piping porosity in fillet welds shall not exceed one in each 4 in [100 mm]
of weld length and the maximum diameter shall not exceed 3/32 in [2.5 mm]. Exception: for
fillet welds connecting stiffeners to web, the sum of the diameters of piping porosity shall not X
exceed 3/8 in [10 mm] in any linear inch of weld and shall not exceed 3/4 in [20 mm] in any
12 in [300 mm] length of weld.
(C) CJP groove welds in butt joints transverse to the direction of computed tensile stress shall
have no piping porosity. For all other groove welds, the frequency of piping porosity shall not
X
exceed one in 4 in [100 mm] of length and the maximum diameter shall not exceed 3/32 in
[2.5 mm].
Note: An "X" indicates applicability for the connection type; a shaded area indicates non-applicability.

313
Copyright American Welding Society
Provided by IHS Marki! under license with AWS
No reproduction or networking permitted without license from IHS Not for Resale, 01/31/2020 02:35:12 MST