Load and Resistance Factor Design (LRFD) for Highway ...

1 Publication No. FHWA-NHI-15-058 April 2007 Revised August 2015 NHI Course No. 130081 Load and Resistance Factor Design (LRFD) for Highway bridge Superstructures Design EXAMPLES Archived This page intentionally left blank. Archived Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient s Catalog No. FHWA-NHI-15-058 FHWA-NHI-15-058 4. Title and Subtitle 5. Report Date Load and Resistance Factor Design (LRFD) f or Highway bridge August 2015 Superstructures Design Examples 6. Performing Organization Code FHWA/DTS-NHI-1 7. Author (s) Original Steel Design Example Kenneth E. Wilson, , , Justin W. Bouscher, , William A. Amrhein, , Original Prestressed Concrete Design Example Modjeski and Masters, Inc. 8. Performing Organization Report No. MBDE137804 9. Performing Organization Name and Address 10.

2 Work Unit No. (TRAIS) Michael Baker International Airside Business Park, 100 Airside Drive 11. Contract or Grant No. Moon Township, PA 15108 DTFH61-11-D-00046 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Federal Highway Administration Final Submission National Highway Institute (HNHI-10) May 2015 August 2015 1310 North Courthouse Road 14. Sponsoring Agency Code Arlington, VA 22201 FHWA 15. Supplementary Notes Baker Principle Investigator: Mary P. Rosick, Baker Project Manager: Scott D. Vannoy, FHWA Contracting Officer s Representative: Louisa M. Ward FHWA Technical Team Leader: Brian M. Kozy, , 16. Abstract This document provides two comprehensive superstructure Design examples for the application of Load and Resistance Factor Design (LRFD) to Highway bridge Design . One Design example is a two-span steel plate girder bridge , and the other is a two-span prestressed concrete girder bridge with simple span prestressed girders made continuous for live load.

3 These Design examples accompany a four-day training course that presents the theory, methodology, and application for the Design and analysis of both steel and concrete Highway bridge superstructures. The Design examples, as well as the training course, are based on the AASHTO LRFD bridge Design Specifications, Seventh Edition, 2014, with Interim Revisions through 2015. The first Design example includes a series of flowcharts that present the general Design steps required for the Design of a steel plate girder bridge . The flowcharts include references to the AASHTO LRFD bridge Design Specifications, as well as accompanying notes to assist the bridge engineer in understanding the various Design steps. This Design example also includes six major Design steps that illustrate the application of these Design procedures. The six major Design steps included in this Design example are general information, deck Design , steel girder Design , splice Design , miscellaneous steel Design , and bearing Design .

4 The second Design example also includes a series of flowcharts that present the general Design steps required for the Design of prestressed concrete superstructure bridges. This Design example includes five major Design steps. The Design steps included are general information, deck Design , prestressed concrete girder Design , bearing Design , and substructure Design (integral abutment and intermediate pier and foundation Design ). (It should be noted that the substructure Design steps are based on a previous version of AASHTO LRFD bridge Design Specifications and have not been updated.) The Design examples include references to AASHTO LRFD bridge Design Specifications, commentary to assist the bridge engineer in understanding its application, and a variety of figures and tables to supplement the narrative and calculations. 17. Key Words 18.

5 Distribution Statement bridge Design , Load and Resistance Factor This report is available to the public from the NHI Bookstore at Design , LRFD, Superstructure, Deck, Girder, Structural Steel, Reinforced Concrete, Prestressed Concrete, Bearing, Limit State, Load Combination, Analysis 19. Security Classif. (of this report) 20. Security Classif. (of this page) 21. No. of Pages 22. Price Unclassified Unclassified 630 Form DOT F (8-72) Reproduction of completed page authorized Archived ACKNOWLEDGEMENTS We would like to express appreciation to the following individuals who served on the Technical Review Team: Brandon W. Chavel, , HDR Engineering, Inc. Gerald B. Lacosta Sevatec, Inc. We would like to acknowledge the contributions of the following staff members at Michael Baker International during the update of the Design examples: Rachel A.

6 Sharp. Aaron B. Colorito, David J. Foremsky, Francesco M. Russo, , Eric M. Wickersham Gregory M. Willenkin, We would also like to acknowledge the contributions of the following individuals during the update of the Design examples: Michael A. Grubb, Grubb and Associates William N. Nickas, Precast/Prestressed Concrete Institute Finally, we would like to acknowledge the contributions of the following individuals to the original edition of this document: Staff members of Michael Baker International: Raymond A. Hartle, Tracey A. Anderson Jeffrey J. Campbell, James A. Duray, Maureen Kanfoush Herman Lee, Joseph R. McKool, Linda Montagna V. Nagaraj, Jorge M. Suarez, Laura E. Volle, Roy R. Weil Ruth J. Williams FHWA Project Oversight: Thomas K.

7 Saad, FHWA Technical Review Team Leader: Firas I. Sheikh Ibrahim, , Other technical support: John A. Corven, Dann H. Hall Archived Load and Resistance Factor Design (LRFD) for Highway bridge Superstructures STEEL Design EXAMPLE Archived This page intentionally left blank. Archived Table of Contents Flowcharts Chart 1 General Information Flowchart Chart 2 Concrete Deck Design Flowchart Chart 3 Steel Girder Design Flowchart Chart 4 Bolted Field Splice Design Flowchart Chart 5 Miscellaneous Steel Design Flowchart Chart 6 Bearing Design Flowchart Design Example Design Step 1 General Information Design Step 2 Deck Design Design Step 3 Steel Girder Design Design Step 4 Splice Design Design Step 5 Miscellaneous Steel Design Design Step 6 Bearing Design Archived This page intentionally left blank.

8 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 1 General Information Flowchart Chart 1 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 2 General Information Flowchart (Continued) Chart 1 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 1 Concrete Deck Design Flowchart Chart 2 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 2 Concrete Deck Design Flowchart (Continued) Chart 2 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 3 Concrete Deck Design Flowchart (Continued) Chart 2 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 4 Concrete Deck Design Flowchart (Continued) Chart 2 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 1 Steel Girder Design Flowchart Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 2 Steel Girder Design Flowchart (Continued) Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 3 Steel Girder Design Flowchart (Continued) Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 4 Steel Girder Design Flowchart (Continued) Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 5 Steel Girder Design Flowchart (Continued)

9 Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 6 Steel Girder Design Flowchart (Continued) Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 7 Steel Girder Design Flowchart (Continued) Chart 3 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 1 Bolted Field Splice Design Flowchart Chart 4 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 2 Bolted Field Splice Design Flowchart (Continued) Chart 4 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 3 Bolted Field Splice Design Flowchart (Continued) Chart 4 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 1 Miscellaneous Steel Design Flowchart Chart 5 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 2 Miscellaneous Steel Design Flowchart (Continued) Chart 5 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 3 Miscellaneous Steel Design Flowchart (Continued) Chart 5 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 1 Bearing Design Flowchart Chart 6 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 2 Bearing Design Flowchart (Continued) Chart 6 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 3 Bearing Design Flowchart (Continued)

10 Chart 6 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 4 Bearing Design Flowchart (Continued) Chart 6 ArchivedFlowcharts Design Example for a Two-Span bridge FHWA LRFD Steel Design Example 5 Bearing Design Flowchart (Continued) Chart 6 ArchivedFHWA LRFD Steel bridge Design Example Design Step 1 General Information / Introduction 1-1 General Information / Introduction Design Step 1 Table of Contents Page Introduction .. 1-2 Design Step - Obtain Design Criteria .. 1-4 Design Step - Obtain Geometry Requirements .. 1-8 Design Step - Perform Span Arrangement .. 1-8 Design Step - Obtain Geotechnical Recommendations .. 1-9 Design Step - Perform Type, Size and Location Study .. 1-9 Design Step - Plan for bridge Aesthetics .. 1- 10 ArchivedFHWA LRFD Steel bridge Design Example Design Step 1 General Information / Introduction 1-2 Introduction Design Step 1 is the first of several steps that illustrate the Design procedures used for a steel girder bridge .