This should not exceed 2,165 Joules per mm (55,000
Joules per inch) for A36 steel. With higher heat
inputs, the weld metal strengths fall below the
specification limits. For gas metal-arc welding,
the maximum heat input should be 1,969 Joules per mm
(50,000 Joules per inch).
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3.1.1
Requirements
Workmanship and techniques for welded construction shall conform to the
requirements of AWS D1.1/D1.1M and AISC 335. When AWS D1.1/D1.1M and the
AISC 335 specification conflict, the requirements of AWS D1.1/D1.1M shall
govern.
3.1.2
Identification
Welds shall be identified in one of the following ways:
a. Written records shall be submitted to indicate the location of
welds made by each welder, welding operator, or tacker.
b. Each welder, welding operator, or tacker shall be assigned a
number, letter, or symbol to identify welds made by that individual.
The Contracting Officer may require welders, welding operators, and
tackers to apply their symbol next to the weld by means of rubber
stamp, felt-tipped marker with waterproof ink, or other methods that do
not cause an indentation in the metal. For seam welds, the
identification mark shall be adjacent to the weld at 1 meter 3 foot
intervals. Identification with die stamps or electric etchers shall
not be allowed.
3.2
QUALITY CONTROL
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NOTE: The methods of nondestructive testing
required will be determined and specified. The
specification writer (designer) must decide what
weld defects can be tolerated under service
conditions. Next, the type of nondestructive
examination (NDE) system to be used must be
determined, considering joint design, material
thickness, and accessibility to the joint. Every
weld joint will not require 100 percent NDE. Joints
critical to the structure should be determined.
These should be inspected more closely than
noncritical joints. Remember, visual inspection is
as important to the final quality of the weld as the
other methods. The specifications or drawings must
clearly indicate which joints require 100 percent
NDE, which joints require random inspection, and
which method(s) are to be used for each joint. For
random inspection, the drawings must indicate the
location, number of joints, and minimum increment
length of weld which will be inspected, but must not
disclose the exact spot to be examined. Joints not
inspected by radiographic, magnetic particle, liquid
penetrant, or ultrasonic methods shall be subject to
SECTION 05090A
Page 12
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