BDM–1405
BOEING DESIGN MANUAL
******* PSDS GENERATED *******
REV B
FUSION WELDING OF STEEL SUPPORT EQUIPMENT
PAGE 2
BDM–1405
1 INTRODUCTION AND GENERAL
REQUIREMENTS
This section provides design requirements and recommenda-
tions for the fusion welding of plain carbon steels, high
strength low alloy (HSLA) constructional steels and low alloy
heat treatable steels for ground handling and weapons support
equipment.
1.1 Specifications
BAC5945 shall be specified for fusion welding of ground sup-
port equipment made of 1/8 inch and thicker plain carbon
steels, HSLA constructional steels, or low alloy heat treatable
steels, and stainless steel attachments to the same. BAC5945
meets or exceeds the requirements of the AWS Structural
Welding Code, D1.1., except for base materials thinner than
1/8 inch. For the latter, AWS D1.3 must be used. BAC5945
is not intended for welding code–designed pressure vessels or
pressure piping.
For programs required to meet the requirements of AWS
D1.1–88, the weld joint configurations shown in section 3 are
considered prequalified for the materials asterisked in FIG-
URE 6. The same joint configurations are recommended with
any of the materials listed in FIGURE 6.
NOTE: The Structural Welding Code, AWS D1.1, is
updated periodically. The program contract may
require a specific revision date of AWS D1.1 to be
used for design and fabrication. Designers are
cautioned to verify the design requirements from
the edition of AWS D1.1 specified by the contract
(if different from AWS D1.1–88) since some of the
requirements may have been revised. Footnotes
referring to bridges apply only to contracts requir-
ing compliance to the dynamically loaded
structures design section of AWS D1.1.
When AWS D1.1 is the contract welding specifica-
tion, customer approval is required when welding
materials that are not listed in AWS D1.1.
BAC5945 requires qualified weld procedures. Certain weld
processes and joint designs, when used on specified materials,
may be considered as being prequalified per AWS D1.1 and
may be used without qualification testing. These should be
used whenever possible. If prequalified conditions cannot be
met, joint designs which meet previously qualified weld
procedures should if possible be used. All other combinations
of materials, joints and weld processes must be qualified by
test and/or will require preparation of a new weld procedure
prior to use, thereby increasing costs. Weld procedures are
prepared by manufacturing and specify all essential variables
and contain specific instructions for the welder or welding
operator.
1.2 References
AWS A2.4 Standards Symbols for Welding Brazing and
Nondestructive Examination
AWS D1.1 American Welding Society (AWS) “Struc-
tural Welding Code – Steel”
AWS D1.3 American Welding Society (AWS) “Struc-
tural Welding Code – Sheet Steel
BAC5423 Penetrant Methods of Inspection
BAC5424 Magnetic Particle Inspection
BAC5439 Ultrasonic Inspection of Welds
BAC5617 Heat Treatment of Alloy Steels
BAC5618 Carburizing and Nitriding of Steels
BAC5915 Radiographic Inspection
BAC5945 Fusion Welding of Ground Handling and
Weapons Support Equipment – Steel
BACD2022 Welding and Brazing Symbols, Interpre-
tation
BDM–1404 Welding
BDS–1250 Standards
BDS–1360 Weldment and Brazement Drawings
• “Design of Welded Structures” Omer W. Blodgett, James
F. Lincoln Arc Welding Foundation
• “Manual of Steel Construction” American Institute of
Steel Construction
• “Structural Engineering Handbook” Gaylord and Gay-
lord, MacGraw Hill
• “Modern Welding Technology” H.B. Cary, Prentice Hall,
Inc.