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Steel Bridge Fabrication GuideSpecificationS2.1‐2016American Association of State Highway TransportationOfficialsNational Steel Bridge AllianceAASHTO/NSBA Steel Bridge Collaboration
PREFACEThis document presents guidelines developed by the AASHTO/NSBA Steel Bridge Collaboration.The primary goal of the Collaboration is to achieve steel bridge design and construction of thehighest quality and value through standardization of the design, fabrication, and erection processes.Each document represents the consensus of a diverse group of professionals.It is desired that Owners adopt and support Collaboration guidelines in their entirety to facilitate theachievement of standardization. It is understood, however, that local statutes or preferences mayprevent full adoption of the guidelines recommended herein. In such cases Owners may adopt theseguidelines with the exceptions they feel are necessary.DISCLAIMERThe information presented in this publication has been prepared in accordance with recognizedengineering principles and is for general information only. While it is believed to be accurate, thisinformation should not be used or relied upon for any specific application without competentprofessional examination and verification of its accuracy, suitability, and applicability by a licensedprofessional engineer, designer, or architect.The publication of the material contained herein is not intended as a representation or warranty ofthe part of the American Association of State Highway and Transportation Officials (AASHTO) orthe National Steel Bridge Alliance (NSBA) or of any other person named herein, that this informationis suitable for any general or particular use or of freedom from infringement of any patent orpatents. Anyone making use of this information assumes all liability arising from such use.Caution must be exercised when relying upon other specifications and codes developed by otherbodies and incorporated by reference herein since such material may be modified or amended fromtime to time subsequent to the printing of this edition. The authors and publishers bear noresponsibility for such material other than to refer to it and incorporate it by reference at the time ofthe initial publication of this edition.Copyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration. All rights reserved.AASHTO Document No: NSBASBF-3-OLCopyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration.All rights reserved.
AASHTO EXECUTIVE COMMITTEE2015–2016Voting MembersOfficers:President: Paul Trombino, IowaVice President: David Bernhardt, MaineSecretary-Treasurer: Carlos Braceras, UtahRegional Representatives:REGION I:Leslie Richards, Pennsylvania, One-Year TermPete Rahn, Maryland, Two-Year TermREGION II:Paul Mattox, West Virginia, One-Year TermCharles Kilpatrick, Virginia, Two-Year TermREGION III:Charles A. Zelle, Minnesota, One-Year TermRandall S. Blankenhorn, Illinois, Two-Year TermREGION IV:Brian Ness, Idaho, One-Year TermCarlos Braceras, Utah, Two-Year TermNonvoting MembersImmediate Past President: Michael P. Lewis, Rhode IslandExecutive Director: Bud Wright, Washington, DCiCopyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration.All rights reserved.
AASHTO HIGHWAYS SUBCOMMITTEE ON BRIDGES AND STRUCTURES, 2016GREGG FREDRICK, ChairBRUCE V. JOHNSON, Vice ChairJOSEPH L. HARTMANN, Federal Highway Administration, SecretaryPATRICIA J. BUSH, AASHTO LiaisonALABAMA, Eric J. Christie,William “Tim” Colquett,Randall B. MullinsALASKA, Richard A. PrattARIZONA, David B. Benton,David L. Eberhart, Pe-Shen YangARKANSAS, Charles “Rick” EllisCALIFORNIA, Susan Hida,Thomas A. Ostrom, Dolores VallsCOLORADO, Behrooz Far, Stephen Harelson,Jessica MartinezCONNECTICUT, Timothy D. FieldsDELAWARE, Barry A. Benton,Jason HastingsDISTRICT OF COLUMBIA, Donald L.Cooney, Konjit C. “Connie” Eskender,Richard KenneyFLORIDA, Sam Fallaha,Dennis William Potter, Jeff PouliotteGEORGIA, Bill DuVall, Steve GastonHAWAII, James FuIDAHO, Matthew FarrarILLINOIS, Tim A. Armbrecht, Carl PuzeyINDIANA, Anne M. RearickIOWA, Ahmad Abu-Hawash,Norman L. McDonaldKANSAS, Mark E. Hoppe, John P. JonesKENTUCKY, Mark Hite, Marvin WolfeLOUISIANA, Arthur D’Andrea, Paul Fossier,Zhengzheng “Jenny” FuMAINE, Jeffrey S. Folsom, Wayne Frankhauser,Michael WightMARYLAND, Earle S. Freedman,Jeffrey L. Robert, Gregory Scott RobyMASSACHUSETTS, Alexander K. Bardow,Thomas Donald, Joseph RigneyMICHIGAN, Matthew Jack Chynoweth, DavidJuntunenMINNESOTA, Arielle Ehrlich,Kevin WesternMISSISSIPPI, Austin Banks, Justin Walker,Scott WesterfieldMISSOURI, Dennis Heckman,Scott StotlemeyerMONTANA, Kent M. Barnes,David F. JohnsonNEBRASKA, Mark Ahlman, Fouad Jaber, MarkJ. TraynowiczNEVADA, Troy Martin, Jessen MortensenNEW HAMPSHIRE, David L. Scott,Peter StamnasNEW JERSEY, Xiaohua “Hannah” Cheng,Nagnath “Nat” Kasbekar, Eli D. LambertNEW MEXICO, Ted L. Barber,Raymond M. Trujillo, Jeff C. VigilNEW YORK, Wahid Albert,Richard MarchioneNORTH CAROLINA, Brian Hanks,Scott Hidden, Thomas KochNORTH DAKOTA, Terrence R. UdlandOHIO, Alexander B.C. Dettloff,Timothy J. KellerOKLAHOMA, Steven Jacobi, Walter PetersOREGON, Bruce V. Johnson,Tanarat Potisuk, Hormoz SeradjPENNSYLVANIA, James M. Long,Thomas P.Macioce, Lou RuzziPUERTO RICO, (Vacant)RHODE ISLAND, Georgette ChahineSOUTH CAROLINA, Barry W. Bowers, TerryB. Koon, Jeff SizemoreSOUTH DAKOTA, Steve JohnsonTENNESSEE, John S. Hastings,Wayne J. SegerTEXAS,Bernie Carrasco, Jamie F. Farris, GreggA. FreebyU.S. DOT, Joseph L. HartmannUTAH, Carmen Swanwick, Cheryl HershSimmons, Joshua SlettenVERMONT, James LaCroix,Wayne B. SymondsVIRGINIA, Prasad L. Nallapaneni,Kendal R. WalusWASHINGTON, Tony M. Allen,Thomas E. Baker, Bijan KhaleghiWEST VIRGINIA, Ahmed Mongi,Billy VarneyWISCONSIN, Scot Becker,William C. Dreher, William OliviaWYOMING, Paul G. Cortez,Gregg C. Frederick, Michael E. MenghiniiiCopyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration.All rights reserved.
GOLDEN GATE BRIDGE, HIGHWAYAND TRANSPORTATION DISTRICT,Kary H. WittMDTA, Dan WilliamsN.J. TURNPIKE AUTHORITY,Richard J. RaczynskiN.Y. STATE BRIDGE AUTHORITY,Jeffrey WrightPENN. TURNPIKE COMMISSION,James StumpU.S. ARMY CORPS OF ENGINEERS—DEPARTMENT OF THE ARMY,Phillip W. Sauser,Christopher H. WestbrookU.S. COAST GUARD, Kamal ElnahalU.S. DEPARTMENT OFAGRICULTURE—FORESTSERVICE, John R. KattellKOREA, Eui-Joon Lee, Sang-Soon LeeSASKATCHEWAN, Howard YeaTRANSPORTATION RESEARCH BOARD,Waseem DekelbiiiCopyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration.All rights reserved.
AASHTO/NSBA STEEL BRIDGE COLLABORATIONTask Group 2, Fabrication SpecificationHeather Gilmer, HRV, ChairFrank AdragnaCamille BernierBob BillsFrank BlakemoreBrian CavinBrandon ChavelRobert ConnorSteve CookChris CrosbyDenis DuboisSteve DukeJon EdwardsSammy ElsayedBehrooz FarJamie FarrisKarl FrankJohn GastJamie HiltonBob HorwhatJoe HowardMark HurtAdil KhanBrian KozyTeresa MichalkRonnie MedlockRuss PanicoDuncan PatersonAnna PetroskiMax PuchtelBuck RoberdsRon RunkTom SchlaflyCalvin SchrageBob StachelGary WischRyan WischJohn YadloskyTRC EngineeringCanam BridgesTUV RheinlandGarverWoyt IndustriesHDR, Inc.Purdue UniversityMichigan DOTISCHRVFlorida DOTDOT Quality ServicesMC IronworksColorado DOTTexas DOTHirschfield IndustriesConWeldKTA-TatorPennsylvania DOTSt. Louis Screw & BoltKansas DOTAmec Foster WheelerFHWATexas DOTHigh SteelQuality Management CompanyHDR, Inc.DOT Quality ServicesAISCIndustrial Steel ConstructionHigh Steel StructuresAISCNSBAHRVDeLong’s, Inc.DeLong’s, Inc.HDR, Inc.ivCopyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration.All rights reserved.
TABLE OF CONTENTSINTRODUCTION . viiSECTION 1: DEFINITIONS AND RESPONSIBILITIES . 11.1—Contractor . 11.2—Fabricator. 11.3—Owner . 11.4—Primary Members . 2SECTION 2: PREFABRICATION . 32.1—Fabricator Certification. 32.2—Communication . 42.3—Shop Drawings . 52.4—Prefabrication Meeting . 62.5—Procedures . 82.6—Commencement of Work. 92.7—Evaluation of the Work. 92.8—Quality Control . 92.9—Progress Meetings .10SECTION 3: MATERIAL CONTROL .113.1—Quality .113.2—Certifications and Verification .123.3—Identification and Traceability.133.4—Handling, Storage, and Shipment .13SECTION 4: WORKMANSHIP .154.1—Cutting, Shearing, and Machining .154.2—Contact and Bearing Surfaces .164.3—Cold Bending .174.4—Straightening .184.5—Welding .184.6—Bolt Holes .214.7—Bolting .274.8—Surface Preparation of Unpainted Weathering Steel (Non-Faying Surfaces) .31SECTION 5: HEAT APPLICATION.325.1—Heating Process and Equipment .325.2—Heat-Shrink or Upset-Shortening Method .345.3—Heat-Curving for Sweep Bridge Members .345.4—Minimum Radius for Heat-Curving.365.5—Heat Cambering .375.6—Heat-Straightening Damaged Structural Steel .375.7—Heat-Assisted Bending (Mechanical Hot Bending) .385.8—Heat Treatment .38NSBASBF-3-E1:NSMarch 2017 Errata toS2.1, Guidelines for Resolution of Steel Bridge FabricationErrors, 2016 EditionvCopyright 2016 by the AASHTO/NSBA Steel Bridge Collaboration. All rights reserved.
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Owner’s specifications. Parts designated as “commentary” are not contractual. This standard is intended to be used in close tandem with AASHTO/NSBA Steel Bridge Collaboration S4.1, Steel Bridge Fabrication QC/QA Guide Specification. For new painted steel bridges using a zinc-rich primer system, Owners are encouraged to adopt
