Bridge Standards & PracticesBridge Standards & Practices

• Bridge Design & Drafting Manual (BDDM)

• Bridge Drawings

• Upcoming Bridge Training

Overview: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

ODOT Bridge On-Line LinksODOT Bridge On-Line Links

• Bridge Engineering Home Pagehttp://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

Bridge Engineering Home Bridge Engineering Home PagePage

Br. Standards & Manuals PageBr. Standards & Manuals Page

ODOT Bridge Example ODOT Bridge Example DrawingsDrawings• ftp://ftp.odot.state.or.us/Bridge/BDDM

In the Example_Drawings folder

Also:

Cell_LibraryBridge_Example_DesignsBDDM_Figures

BDDM Nov. 2005 Selected UpdatesBDDM 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

To Propose Changes to BDDM: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.)

BDDM “Deviation” ProcessBDDM “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

““Deviation” vs. “Exception”Deviation” vs. “Exception”

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

Bridge Standards & Practices Bridge Standards & Practices CommitteeCommittee

• 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

Create CAD Files & DrawingsCreate CAD Files & Drawings

Three Types of CAD Files• Layout File• Sub-structure File• Super-structure File

Layout File Sub-structure File Super-structure File

Drawings are ReviewedDrawings are Reviewed

• Engineer of record reviews drawings• Final Corrections have been made to

CAD Files.

Mylars are CreatedMylars are Created

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

signed mylars.

Plans are sent inPlans 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.

Contract Documents CreatedContract 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).

Project is ConstructedProject is Constructed

As-Constructed DrawingsAs-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.

Distribution of Distribution of As-Constructed DrawingsAs-Constructed Drawings

• A set of drawings with as-constructed comments are created and distributed to:

Bridge Operations EngineerRegion Bridge Inspector

• Original red line as-constructed drawings are sent back to Project Managers office.

At Completion of ProjectAt 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

Bridge Mylar FlowchartBridge Mylar Flowchart

Upcoming Upcoming ODOT Bridge Section TrainingODOT 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

Questions?Questions?