CEMP-E
TI 809-26
1 March 2000
tolerances are provided in AWS D1.1 Figure 5.4, and Section 5.24. Size and contour of welds should be
measured with suitable gauges. Craters are accepted in certain circumstances. Other weld acceptance
criteria that is verified visually include arc strikes (AWS D1.1 Section 5.29), and weld cleaning (Section
5.30). Visual inspection may be aided by a strong light, magnifiers, or other devices that may be helpful.
(2) Tolerances. The tolerances for the completed member, including cross-section, depth, camber,
sweep, straightness, flatness, flange warpage and tilt, stiffener fit, and bearing surface fit, are prescribed
in AWS D1.1 Section 5.23.
(3) Records. The Inspector should mark the welds, joints, or members, as appropriate, that have
been inspected and accepted using a distinguishing mark or die stamp. Alternatively, records indicating
the specific welds inspected by each person may be maintained. The accepted, rejected and repaired
items should be documented in a written report, distributed to the designated recipients in a timely
manner.
f. Nondestructive Testing Methods. AWS D1.1 does not require NDT for statically-loaded building
structures, but NDT is required by both AISC and AWS D1.1 for certain fatigue detail categories for
cyclically-loaded structures. AISC Seismic Provisions require NDT for certain joints in high seismic
applications, as follows: "All complete joint penetration and partial joint penetration groove welded joints
that are subjected to net tensile forces as part of the Seismic Force Resisting Systems ... shall be tested
using approved nondestructive testing methods conforming to AWS D1.1." Such testing should include
ultrasonic testing of welds in T-joints and butt joints over 8 mm (5/16 in.) in thickness. Radiographic
testing may be used in some cases using butt joints. When using T-joints, with the thickness of the tee
"flange" exceeding 40 mm (1-1/2 in.), ultrasonic testing should be performed after completion and
cooling to check for lamellar tearing.
(1) The specific types of NDT, and the applicable acceptance criteria, must be specified in the
contract documents. NDT symbols should be used to specify locations and types of NDT. See AWS A2.4
Part C.
(2) The contractor is responsible for performing any required NDT, unless specifically designated
to be performed by another party.
considered prior to performing NDT for final acceptance for higher strength steels. See AWS D1.1 Table
6.1 (5). The AWS D1.5 Bridge Welding Code Section 12.16.4 requires a longer delay period for Fracture
Critical Members, depending upon weld size and steel strength.
(4) Tables 8-1 and 8-2 provide general guidance for the selection of NDT method(s). For complete
information, see Appendix D.
8-9
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