Jeff Olsen Montana Department of Transportation Helena, MT.
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Transcript of Jeff Olsen Montana Department of Transportation Helena, MT.
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Jeff Olsen
Montana Department of Transportation
Helena, MT
Using Templates to Increase Efficiency
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Agenda Development
Meetings Consist of:Task Force UpdatesTechnical UpdatesUser TrainingState PresentationsThird Party UpdatesGroup Meetings
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Agenda Development
State Presentations:How are states using Virtis Opis? Issues and solutions relating to product.Other interesting happenings.
What does the user want to see???Ideas for next years meeting???Submit ideas to: [email protected]
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So How does Montana use Virtis / Opis?
Montana has licensed V/O for many years.Using Virtis for ratingOpis was the “side-kick” - never got much
action
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Internal DesignsBy completion of design, have bridge modeled in
OpisRate bridge using Virtis.Make necessary adjustments to design if required
by rating.
Consultant DesignsConsultants are required provide a rating for with
their final design.MDT enters the bridge into V/O and compares
rating.
MDT Policy on Virtis / Opis
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Problem 1. Building model is cumbersome2. Reports are difficult to find data3. No standard procedures or
guidelines
Goal1. Find a way to make input quicker
and easier2. Some how take the sting out of
reports
What could I do to increase usage?
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Building Model 1. Developed Standard Procedures2. Training (training alone proved
unsuccessful)3. Create Templates4. Create Tutorials for using Templates
Reports1. Help handout on different report
tools2. Report Summary – Where do I find
it?
Solutions
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In most cases, MDT provides beam details and design stresses in the plan set.
Awarded fabricator designs strand pattern and required concrete strengths.
Shear steel is standardized for each beam type.
Shop drawings are submitted to MDT for approval.
MDT enters final strand pattern into Opis and checks design and rating.
Fabricator modifies and resubmits shop drawings as necessary .
Current MDT Policy on Prestress
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Bridge ID box - Input the Structure Number, except replace
the "+" with an underscore"_".NBI Structure ID box - Input the Structure Number, except
replace the "+" with an underscore"_".Name box – Use this box to identify the stage your bridge is
in. While you are entering the bridge, input “Draft Bridge” in this box. When the design is complete and you are satisfied with the design
and rating, input “Design Complete” in this box. When the shop drawings come in and you have made the
appropriate revisions, input “Shop Drawings Complete” in this box.Description box – Use this box to identify any code or
rating failures and explain any exception or justification for those failures.
Naming Procedures
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Montana’s Bridge Explorer
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Templates Folder
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Beginning with a Template Bridge
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Naming Procedures
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Bridge Description Window
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Go to Opis
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Now it’s time to define the members. For each step, enter the data for both the exterior beam and interior beam before moving on the next step.
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Control Options
I set up the control options to our state defaults.
The designer may alter them for special cases.
I included a discussion of all options in the tutorial.
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Enter Beam Details
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Link beams at this point.
Repeat process for interior beam.
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Enter Deck Details for G1 and G2.
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Enter Haunch Details for G1 and G2.
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Points of Interest
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Compute Distribution Factors
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Enter Strand Pattern
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Select Analysis Settings
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Analyze Beam
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Check Results
Summary of the Specification Results and a table for each of the articles
checked.
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Modify Strands as Necessary - Tutorial offers guidelines
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Add Shear Reinforcement and re-analyze as necessary
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Bridge Rating
When you are satisfied with the design, check the rating.
Make any modifications necessary.
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Build the Bridge Alternative Model using wizard
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Tutorial APPENDIX A - Reports
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Questions