© 2010 bentley systems, incorporated ron gant, p.e., bentley systems, inc. virtual design &...
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Ron Gant, P.E., Bentley Systems, Inc.
Virtual Design & Construction: 3D Information Modeling
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The Challenge
• Building Information Modeling
• Civil Information Modeling
• But really…….
Information Modeling
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Information Modeling
• Everything is an extract of….
• Physical 3D design model– Digital Terrain Model– Plan Set (construction or fabrication)– Quantities– Machine Guidance – Clash detection
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Information Modeling
• Business drivers for Civil-Transportation– PPP (Public-Private Partnerships)– Design Build– Machine Guidance– Clash Detection– Improved profitability– Life Cycle Management– Construction simulation
• Paradigm shift for Civil Engineers– Not just about construction– Life Cycle data management
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The Challenge
Ronald E. Gant
55849
• Vertical modeling in a horizontal world– Technical challenges
• Horizontal scale of projects– Grid to ground – Convergence of meridians– Linear stationing vs. grid– State Plan or geodetic vs. local coordinate system
• U.S. Survey Foot– One International Foot equals 0.999998 U.S. Survey feet
– Professional challenges• No state registration board accepts the model, yet• Paper rules• Model stamping, security
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Building Advantages• AIA approved, National
CAD Standards
• Physical scale
• Coordinate systems
• Willingness to change
Civil Challenges• Lots of standards – 50
DOTs
• Geo-coordination
• Linear or State Plane
• Traditional workflows
Comparisons
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What Makes Civil Information Special
• Some cases, Nothing– Drainage– Survey– Site
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What Makes Civil Information Special
• But working with the DOT– Pay Item Databases
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What Makes Civil Information Special
• But working with the DOT– Pay Item Databases
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Information Modeling
Public Involvement
Field Reporting
Quantities
Shop Drawings
Survey / Layout
Scheduling
3D Visualization
Machine Controls
External Vendors and Suppliers
Constructability
Field Working Drawings
InRoads GEOPAK
MX
Collaboration
Civil Information
modeling
OwnerProject Deliverables
As-Built Drawings
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Things to look for in your Information Modeling Solution
• Geo-Coordination
• Geometric Precision
• Project Collaboration
• Project History
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What is AASHTO – TIG?
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Mission of TIG – AMG
• Dedicated to sharing high-payoff, market-ready technologies among transportation agencies across the U.S.
• Promote technological advancements
• Sponsor technology transfer efforts
• Encourages implementation of those advancements
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AASHTO –TIG Team
• Partnering with the Contracting Community– Contractors on team– Working with AGC and ARTBA
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AASHTO –TIG Partners
• Working with Governmental Groups– FWHA on TIG team– TRB– AASHTO committees
• Partnering with private sector– Software developers– Hardware vendors
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Ron Gant, P.E., Bentley Systems, Inc.
Thank you