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Bridge Standards & Practices

Bridge Standards & Practices. Bridge Design & Drafting Manual (BDDM) Bridge Drawings Upcoming Bridge Training. Overview:. Links to ODOT Bridge Information BDDM – Recent Key Updates Proposing Changes to the Manual Deviations from BDDM Bridge Drawings – Start to Finish

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Bridge Standards & Practices

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  1. Bridge Standards & Practices • Bridge Design & Drafting Manual (BDDM) • Bridge Drawings • Upcoming Bridge Training

  2. Overview: • Links to ODOT Bridge Information • BDDM – Recent Key Updates • Proposing Changes to the Manual • Deviations from BDDM • Bridge Drawings – Start to Finish • Bridge Section Training Updates

  3. ODOT Bridge On-Line Links • Bridge Engineering Home Page • http://www.oregon.gov/ODOT/HWY/BRIDGE • Bridge Design & Drafting Manual (BDDM) • Bridge Standard Drawings • Use “Br. Standards & Manuals” Link • Standard Drawings also via Roadway Engineering Home Page

  4. Bridge Engineering Home Page

  5. Br. Standards & Manuals Page

  6. ODOT Bridge Example Drawings • ftp://ftp.odot.state.or.us/Bridge/BDDM • In the Example_Drawings folder • Also: • Cell_Library • Bridge_Example_Designs • BDDM_Figures

  7. BDDM Nov. 2005 Selected Updates • 1.1.2.2 Scour Analysis • 1.1.7.2(2) Pedestrian Structures – Live Load • 1.1.7.4 LRFD Ductility, Redundancy and Operational Importance Factors • 1.1.7.5 Sidewalk Loading – New section • 1.1.8.4 End Bents – Concrete facing on MSE walls • 1.1.14.2(1) Stay-in-Place Forms • 1.2 Steel – Various updates • 1.2.1.9 Deck Pouring Sequence

  8. To Propose Changes to BDDM: • Go to Introduction, “Revising The Manual”, page INTRO-5 • Follow Step-by-Step procedure • Not needed for bringing routine errors to our attention (typographical, etc.)

  9. BDDM “Deviation” Process • When you want to do something differently than BDDM policy specifies • Send E-mail request to Bridge Standards & Practices Committee stating “what” and “why” • Committee will review and respond

  10. “Deviation” vs. “Exception” • Roadway Engineering Design “Exception” process is a more formal request to use geometry, etc. that doesn’t meet operational standards

  11. Bridge Standards & Practices Committee • Bruce Johnson, State Bridge Engineer • Kevin Davidson, Br. Standards & Practices Engr. • Gary Bowling, Br. Operations Managing Engineer • Craig Shike, Concrete • Hormoz Seradj, Steel • Holly Winston, Seismic & Bridge Rails • Jan Six, Foundations

  12. Create CAD Files & Drawings • Three Types of CAD Files • Layout File • Sub-structure File • Super-structure File Layout File Sub-structure File Super-structure File

  13. Drawings are Reviewed • Engineer of record reviews drawings • Final Corrections have been made to CAD Files.

  14. Mylars are Created • “D” size mylars are printed • All parties have signed mylars. • 11” x 17” paper prints are made of signed mylars.

  15. Plans are sent in • “D” size mylars and 11” x 17” paper copies of signed mylars are sent to office of Pre-Letting in Salem Headquarters. • Office of pre-Letting sends mylars to ODOT Reprographics for printing and scanning.

  16. Contract Documents Created • ODOT Reprographics sends requested material back to Office of Pre-Letting and sends Bridge mylars and scans to Bridge Engineering Section Headquarters, front office. • Bridge front office returns signed mylars to original design office. • Loads scans into the Bridge Data System (BDS).

  17. Project is Constructed

  18. As-Constructed Drawings • Project Manager submits as-constructed comments to design office. • Engineer of record reviews comments • Drafter places as-constructed comments on mylar by hand.

  19. Distribution of As-Constructed Drawings • A set of drawings with as-constructed comments are created and distributed to: Bridge Operations Engineer Region Bridge Inspector • Original red line as-constructed drawings are sent back to Project Managers office.

  20. At Completion of Project At completion of a project, what information is needed by Bridge Engineering Section Headquarters in Salem. • Electronic CAD files in Microstation Version 8 format. • “D” size signed mylars • Calculation books • Project Files • Load Rating of as-constructed bridge per Load Rating Guidelines • Cost Data

  21. Bridge Mylar Flowchart

  22. Upcoming ODOT Bridge Section Training • Beginning Seismic Design: March, April, June & July, One day a month for 8 hours each month, total of 32 hrs. • High Performance Steel and Accelerated Bridge Construction: March 15 & 16 • What’s New in Bridge Design: May 17 & 18th • LRFD Foundation design: Tentative April or May 2006

  23. Questions?

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