Coordinating MEP services in a tight raised-floor area is one of the toughest challenges faced in modern BIM MEP coordination. When multiple services—mechanical, electrical, plumbing, HVAC, and drainage—must pass through a shallow void, MEP spatial coordination becomes extremely complex. And when the client demands zero clashes along with full future maintenance access, the responsibility becomes even more critical.

At PSK BIM Service, a leading MEP BIM service provider and recognised BIM modelling company in India, we recently completed a 2000m² BIM project in Doha for Qatar National Bank inside Lusail Plaza Towers. The project required detailed LOD 350 MEP modelling, accurate routing, and seamless Revit MEP coordination within a heavily congested raised-floor space.

This article explains how our team produced a clash-free MEP model, ready for both construction and long-term facility operations, while maintaining every required maintenance access point.

Why Raised-Floor MEP Coordination Is So Challenging

A raised floor often becomes a high-density MEP zone, where every centimetre matters. During MEP spatial coordination, engineers must manage:

  • Limited vertical space for ducts, pipes, and trays.
  • Multiple systems intersecting in the same zone.
  • Required condensate drain pipe slope.
  • Architectural and structural obstructions.
  • Underfloor air movement requirements.
  • Facility management accessibility for long-term maintenance.
  • Zero tolerance for on-site rework.

This is where LOD 350 BIM modelling becomes essential. It ensures accurate geometry, real-world routing, and early clash detection, allowing issues to be solved digitally before construction.

Project Requirement: Fit All MEP Services + Ensure Maintenance Access

The client’s instruction was clear:
“All MEP components must be accessible for future maintenance.”

This meant:

  • No pipe or tray could block access to valves or drains.
  • All equipment must be reachable by FM teams.
  • The design must support long-term BIM for facility management, not just installation.

–  Design Input:  2D Cad Files
–  Software Used: Revit – 2021, Naviswork.
–  Project Duration: 1 Month.

This is where modern BIM truly delivers value.

Our BIM MEP Coordination Approach

To meet the space and maintenance requirements, our team used a structured process involving Revit MEP coordination, LOD 350 MEP modelling, and consistent collaboration with designers and facility managers.

1. Early LOD 350 MEP Modelling Using Revit

We began with a complete Revit MEP LOD 350 model, enabling:

  • Early clash detection.
  • Correct routing hierarchy.
  • Clear separation between mechanical and electrical services.
  • Efficient stacking and layering of systems.
  • Maximum utilisation of raised-floor space.

This approach helped us produce a clash-free MEP model even before IFC submission.

2. Maintaining Correct Condensate Drain Slope

A major raised-floor challenge is keeping the correct condensate drain slope (1/8 inch per foot) without clashing with other services.

We resolved this through:

  • Custom routing strategies in Revit.
  • Smart spacing between HVAC and electrical routes.
  • Avoiding structural beams.
  • Gradient validation using BIM tools.

This ensured smooth drainage performance with minimal space usage.

3. Creating Maintenance Access Zones Inside the BIM Model

A common issue in raised-floor installations is poor maintenance access. To avoid this, we integrated maintenance access zones directly into the BIM model:

  • HVAC service clearance.
  • Access around electrical panels and cable trays.
  • Space near data racks.
  • Room around valves, drains, and sensors.
  • Clear pathways for FM teams.

During coordination, we identified zero-access zones around certain data racks and corrected them early through redesign and collaboration.

4. Real-Time Collaboration With Designers and FM Teams

Throughout the IFC process, our team worked closely with:

  • MEP designers.
  • HVAC engineers.
  • Electrical consultants.
  • Facility management teams.

This process ensured the model was construction-ready, accurate, and aligned with facility management needs.

Final Outcome: A Construction-Ready, Clash-Free MEP Model

By the end of the project, PSK BIM Service delivered:

  • A fully clash-free MEP model.
  • Optimised routing for all raised-floor services.
  • Verified maintenance access.
  • A complete LOD 350 BIM model ready for IFC.
  • A future-ready digital model for FM teams

This workflow eliminated on-site conflicts and ensured smooth installation for the contractor.

Key Takeaways:

1. BIM must support long-term maintenance—not just design.
– Raised-floor environments require careful access planning.
2. Early LOD 350 MEP modelling prevents 80% of on-site issues.
– Accurate geometry reduces unpredictable clashes.
3. Collaboration is the key to solving tight-space MEP challenges.
– Designers, engineers, and BIM experts must stay aligned.

This project showcases how effective BIM MEP coordination can transform a dense raised-floor environment into a clash-free, maintenance-ready, and installation-friendly MEP system. With the right combination of LOD 350 modelling, accurate clash detection, and thoughtful access planning, even the tightest spaces can be managed with confidence.

As a trusted BIM modelling company in India, PSK BIM Service provides precise, high-performance BIM outsourcing services for global clients. With strong expertise in Revit MEP coordination, MEP modelling, and large-scale BIM delivery, we ensure accuracy, efficiency, and long-term reliability.

Want a trusted team to handle your BIM requirements?

👉 Partner with PSK BIM Service for reliable, high-quality, result-oriented BIM solutions.