As-Builts with BIM Laser Scanning for Big Walker Mountain Tunnel Project VA
Project Overview
Client Profile
VDOT Thompson & Litton
Location
Big Walker Mountain Tunnel Virginia
Industry
Infrastructure (Federal)
Inputs
Site and work details
Deliverables
Laser-scanned data, as-built BIM model, and permit expedition
SOFTWARE WE USED
Business Needs
The contractor needed as-built BIM for Big Walker Mountain Tunnel, including approaches, roadways, and utilities renovation. The tunnel, carrying Interstate 77, is 20 miles south of the East River Mountain Tunnel, its longer counterpart.
Challenges
- Scanning and as-built modeling a tunnel are not like any other project typology. Therefore, this project has its own unique set of challenges never faced by Tejjy.
- To link highways, the Big Walker Mountain Tunnel project required integration of topographical data and simulation of long approach routes.
- Due to the tunnel’s proximity to the Appalachian Trail, environmental regulations were aimed at protecting the neighboring ecosystems.
- Adherence to Virginia-specific construction rules and the local ecological effect were major considerations during the approval process.
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Our Solutions & Approach
Tejjy’s workforce utilized its laser scanning and as-built modeling expertise for solving all the above-listed project challenges.
Comprehensive 3D laser scanning and data integration
- Tejjy created thorough as-built BIM models throughout renovations by precisely capturing the intricacies of the Big Walker Mountain Tunnel using Leica’s RTC 360.
Advanced Topographical and Utility Simulation
- Tejjy integrated the BIM-GIS workflow into the project, working to simulate long approach routes and optimize roadway connections for accounting for elevation changes and varying gradients.
Environmental and Regulatory Compliance
- For Virginia-specific federal environmental norms, Tejjy gave eco-sensitive planning close to the Appalachian Trail priority by effective utilization of 7D BIM.
Coordinating multidisciplinary activities with stakeholders
- Tejjy made use of BIM-MEPF coordination to expedite portal building, generator facility, and substation upgrades, guaranteeing adherence to safety and utility requirements.
Accuracy of BIM Models and Utility Renovation Scheduling
- To integrate new systems into tunnels, avoid service interruptions, and provide a strong basis for future renovations, the BIM models precisely represented utility layouts.
Business Impact
The location of this tunnel project was strategic for Virginia’s transportation and logistics department, and that is why Tejjy made a significant contribution to this project.
Simplified renovation and authorization procedure
- Tejjy’s meticulously accurate as-built BIM models reduced design and construction mistakes, resulting in speedier permit clearances.
Improved Project Efficiency and Accuracy
- Renovation planning became much more efficient, and rework was reduced with scan to BIM processes, and hence a money and time saver.
Sustainable and Eco-Friendly Design Implementation
- Tejjy showed a dedication to sustainability by using eco-sensitive designs and following environmental standards, which improved the project’s approval by regulatory bodies.
Improved Stakeholder Collaboration
- BIM technology enabled interdisciplinary collaboration among stakeholders, demonstrating proficiency in managing significant government infrastructure projects.
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