National Steel Bridge Alliance
Guideline "G" Documents
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G1.1-2020 Shop Drawing Review/Approval Guidelines for Fabricated Structural Steel |
Description: G1.1-2020 presents the preparation, review, and approval of bridge fabrication shop detail drawings. It also outlines the roles of project participants in the review and approval process so that projects are kept on-schedule and more effectively executed. |
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G1.2-2003 Design Drawings Presentation Guidelines |
Description: G1.2-2003 should be used by the engineer in the development of design drawings. The document advises the engineer on the minimum information required to detail and fabricate a structure. Included in G1.2 are sample drawings illustrating the needed information. |
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G1.3-2002 Shop Detail Drawing Presentation Guidelines |
Description: G1.3-2002 can be referenced by fabricators during the development of shop drawings. The document provides a framework for the development of shop drawings and can be referenced by engineers and owners during the approval process. Included in G1.3 are sample drawings. |
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G1.4-2006 Guidelines for Design Details |
Description: G1.4-2006 is a collection of sample design details that allow for the economical fabrication and erection of bolted splices, crossframes, and stiffeners. Included in G1.4 are economical solutions for rolled beams, plate girders, and tub girders. |
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G2.2-2016 Guidelines for Resolution of Steel Bridge Fabrication Errors |
Description: G2.2-2016 addresses common issues that can result during the fabrication process. From a misaligned bolt hole to a miscut member this document discusses the common issues and how the errors should be resolved. Many times, the fix can be more costly and detrimental than the original error. This document provides the necessary guidance to ensure an economical fix that preserves the long term resilience of steel girders. |
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G4.1-2019 Steel Bridge Fabrication QC QA Guidelines |
Description: G4.1-2019 sets potential minimum requirements for a fabricator's quality control program and an owner's quality assurance program. G4.1 puts emphasis on the development and implementation of a comprehensive program for fabricators. This document supersedes S4.1 and provides information that is complementary to applicable welding codes and AISC standards and will be useful for developing a Fabricator Quality Control (QC) System and corresponding Quality System Manual. |
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G4.2-2021 Guidelines for the Qualification of Structural Bolting Inspectors |
Description: The G4.2-2021 guidelines are intended to assist owners with the development of individual training and qualification programs for structural bolting inspectors.. |
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G4.4-2006 Sample Owners Quality Assurance Manual |
Description: G4.4-2006 serves as a sample quality assurance manual to be used as a guide for Bridge Owners or third party inspection agencies to develop their own quality assurance plans. |
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G9.1-2022 Steel Bridge Bearing Guidelines |
Description: This publication presents steel bridge bearing design guidelines and construction details that are cost-effective, functional, and durable. It includes four major types of bridge bearings: (1) Elastomeric; (2) High Load Multi-Rotational (HLMR); (3) Steel; and (4) Seismic Isolation, which is new in this edition. Each bearing type is presented as its own section within the guide, and the information included is intended to permit efficient design, fabrication, installation, and maintenance of each bearing type. |
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G12.1-2020 Guidelines to Design for Constructability and Fabrication |
Description: G12.1-2020 is an update to the 2016 edition. G12.1 is intended for use throughout the design and fabrication process to ensure efficient and economical girder design and construction. It complements the AASHTO LRFD Bridge Design and Construction Specifications with guidance and best practices that can lead to highway bridges that are more economical to fabricate, construct and maintain. This edition features numerous updates that reflect advancements within the industry along with changes to related specifications. |
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G13.1-2019 Guidelines for Steel Girder Bridge Analysis |
Description: G13.1-2019 is an update to the 2014 document of the same name. The document provides a comprehensive treatment of issues in steel girder analysis. Included in the document is guidance pertaining to the appropriate level of analysis based on geometric complexity. |
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G14.1-2021 Addressing Fatigue Cracking and Details at Risk of Constraint-Induced Fracture |
Description: G14.1-2021 is a practical reference text for a wide range of audiences, including maintenance contractors, asset managers, and design engineers for maintenance actions to address fatigue cracking, as well as details at risk of constraint-induced fracture (CIF) in steel bridges. |
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G14.2-2023 Guidelines for Field Repairs and Retrofits of Steel Bridges |
Description: G14.2-2023 provides guidance and strategies related to the most common forms of damage in steel bridges and options for repair. It includes repair procedures, detailing techniques, maintenance recommendations, inspection recommendations and preservation actions to repair and retrofit damaged steel bridges. |