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Comprehensive Steel Design & Detailing for a 10,000+ ft Automotive Conveyor System

June 30, 2025

Comprehensive Steel Design & Detailing for a 10,000+ ft Automotive Conveyor System


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Erica Smith |

PMC partnered with a leading conveyor supplier to execute a full-lifecycle steel design and detailing project for a conveyor system spanning over 10,000 feet. This ambitious undertaking demanded not only technical precision and advanced coordination but also an agile response to site and schedule challenges.

We provided comprehensive steel design, engineering, and detailing services for a conveyor system spanning over two miles, designed to support a high-demand automotive production environment. Precision and coordination were non-negotiable. This wasn’t just routine steel detailing; it was a fully engineered solution. It was meticulously coordinated and validated against real-world constraints to ensure design certainty throughout the entire process, from design to installation.

We solved spatial challenges inside a live facility, managed safety envelope compliance in 3D, and engineered connection designs that most detailers avoid. With structural steel weaving through roof trusses and tight mechanical spaces, success depended on smooth coordination and catching clashes early.

Project Scope

Engineering: Fully engineered structural steel system using STAAD.Pro, taking into account load cases, code compliance, and safety envelopes.

Detailing: Comprehensive shop and erection drawings developed in SDS2, covering custom supports, hangers, and bracing systems.

Coordination: Leveraged Revizto and Navisworks for model-based coordination, integrating:

  • High-resolution point clouds
  • Legacy 2D and 3D CAD models
  • Multi-disciplinary models from other firms

Key Challenges & Solutions

Challenges

Complex Site Constraints: The conveyor system was to be installed one inch below the bottom chord of trusses, requiring precise coordination and creative design solutions as most header steel had to reside above the truss in space typically allocated to MEP systems.

Highly Coordinated Design: Integration of heterogeneous design data enabled the creation of a unified model, drastically reducing field changes and conflicts during installation.

Compressed Timeline: We met an aggressive delivery schedule, driven by the client’s production and installation commitments.

Safety & Compliance: Structural layouts were meticulously engineered to preserve safety envelopes for moving systems and to comply with relevant building codes and standards.

Solution - Design and Engineering

We took responsibility for load calculations, member sizing, and connection design—tasks that often stall projects when left to external engineering teams. Using STAAD.Pro, we created structural models, calculated Kip loads, and validated every connection for building impact. Every beam, hanger, and connection was carefully coordinated to ensure both optimal performance and constructability.

When envelope constraints came into play, especially around conveyor turns, we handled coordination to ensure safety envelopes, tracking profiles, and equipment paths met clearance rules through the complex screen guard. While this is traditionally done in 2D, we advanced the process using 3D CAD validation to reduce risks and prevent field changes but also revealed a high number of potential clashes that would have otherwise gone unnoticed until install. Given the size, scale, and complexity of the project, using 3D made a significant difference and helped the entire effort run more smoothly for the client.

Solution - BIM Coordination

With parts of the building dating back to 1953 the existing structure was extremely complex featuring dozens of unique trusses with various modifications over the plants 70+ years of producing vehicles. Our team developed the coordination model using a complex mix of data including; Revit, SDS2, AutoCAD, Inventor, STEP, IFC, and point cloud data to validate as-built conditions. We identified hundreds of potential collisions before any steel was shipped, expertly routing support structures through overhead trusses without impacting existing assets.

Being fully integrated meant we could resolve issues in real time. Models were constantly updated to multiple sharing platforms, including Autodesk Vault, Revizto, and Autodesk Construction Cloud. When something didn’t line up, our detailers didn’t wait for answers—they walked over to engineering and worked on the fix. No handoffs. No delays.

Solution - Steel Detailing Execution and Delivery

We handled the entire steel package from initial loads to final fabrication files and managed every detail. Unusual routing, clearance conflicts, and late-stage layout changes were addressed directly and resolved in real time. Like all detailing at PMC, we use only the latest software and always work to the model this insured that the final package wasn’t just accurate, it was fully constructable with a minimum of field modifications.

To deliver these outputs, the team began with minimal input: a basic 2D layout and equipment requirements. Our team provided end-to-end design, engineering, detailing, and coordination while keeping the original scope intact, expanding to better serve the customer's objectives. We performed KIP load calculations, member sizing, and connection design while integrating real-world constraints using 3D modeling. Coordination models were built from existing building data to validate fit and resolve clashes early. Throughout, the team managed spatial compliance for safety envelopes, electrical zones, and tight mechanical areas. This end-to-end process allowed for the creation of accurate machining files, early BOMs for procurement, and a fully coordinated model, minimizing field changes and client involvement.

Deliverables:

  • SDS2 3D Coordination Model
  • General Arrangement (GA), Assembly, and Part Drawings
  • NC Files, DXFs, Bolt Lists, Pull-Ahead BOMs
  • Point cloud reconciliation
  • Engineering sign-off on member sizing and load paths
  • Member sizing
  • Kip load calculations (per connection, verifying building load capacity)
  • Connection Design
  • Safety envelope and clearance analysis
    • Including electrical busses and other high-voltage zones

Why It Mattered

  • Combined engineering + detailing consolidated responsibility and reduced rework and field fixes
  • Solved high-risk routing through building trusses using 3D validation
  • Designed all structural connections in-house to match real conditions
  • Maintained safety and equipment envelopes to ensure safe operation
  • Final steel arrived ready to install with almost no field rework.

 

Conclusion

This project highlighted the impact of fully integrated design, engineering, and detailing within a demanding automotive production environment. PMC delivered a solution by taking responsibility for structural engineering, detailing, and coordination. Working in an active facility created minimal tolerance for error, which our team navigated by applying advanced 3D modeling and real-time collaboration to resolve spatial challenges and eliminate potential clashes early. The final steel package was precise, fully validated, and installation-ready, exceeding the client’s performance requirements while reducing rework and delays.

 

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Erica Smith

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