This code covers welding fabrication requirements
applicable to welded highway bridges. It is to be used in
conjunction with the AASHTO Standard Specification for
Highway Bridges or the AASHTO LRFD Bridge Design
Specifications.
The code is not intended to be used for the following:
(1) Steels with a minimum specified yield strength greater than 690 MPa [100 ksi]
(2) Pressure vessels or pressure piping
(3) Base metals other than carbon or low alloy steels (4) Structures composed of structural tubing Fabrication of structures or components not specifi-
cally addressed by this code shall be performed in con- formance with the special provisions of the contract or in conformance with the written directives of the Engineer who may choose to reference an alternate applicable welding standard.
The fundamental premise of the code is to provide
general stipulations applicable to any routine bridge situa-
tion. Acceptance criteria for production welds different
from those described in the code may be used for a partic-
ular application, provided they are suitably documented
by the proposer and approved by the Engineer.
Such alternate acceptance criteria may be based upon
evaluation of suitability for service using past experience, experimental evidence, or engineering analysis
considering material type, service load effects, and environmental factors.
The code is not intended to be used for the following:
(1) Steels with a minimum specified yield strength greater than 690 MPa [100 ksi]
(2) Pressure vessels or pressure piping
(3) Base metals other than carbon or low alloy steels (4) Structures composed of structural tubing Fabrication of structures or components not specifi-
cally addressed by this code shall be performed in con- formance with the special provisions of the contract or in conformance with the written directives of the Engineer who may choose to reference an alternate applicable welding standard.
The fundamental premise of the code is to provide
general stipulations applicable to any routine bridge situa-
tion. Acceptance criteria for production welds different
from those described in the code may be used for a partic-
ular application, provided they are suitably documented
by the proposer and approved by the Engineer.
The provisions of this
code do not apply to welding base metals less than 3 mm
[1/8 in.] thick. Where base metals thinner than 3 mm [1/8 in.] are to be welded, the requirements of AWS D1.3,
Structural Welding Code—Sheet Steel, should apply. When
used in conjunction with AWS D1.3, the applicable pro-
visions of this code shall be observed.
Fabricators shall be certified under the AISC Quality
Certification Program, Simple Steel Bridges or Major
Steel Bridges, as required by the Engineer, or an equiva-
lent program acceptable to the Engineer.