Industrial Facility As-Built Modeling
TL;DR: As-built BIM modeling in industrial facilities (factories, refineries, power plants) is 300% more complex than standard buildings: Dense MEP systems (pipe density 15-25 m/m²), working in active production environment, safety protocols. Our Toyota Factory project: 50,000 m² facility, 2,500+ MEP elements, LOD 300, 8 weeks. Success keys: Detailed planning + experienced team + phased approach.
Unique Challenges of Industrial Facilities
1. MEP System Density
Standard Office Building: 3-5 meters pipe/m²
Industrial Facility: 15-25 meters pipe/m² (5-8x denser!)
In our Toyota project, in process area alone:
Pipe Complexity: In one process unit, 6 different systems together: Process fluid, cooling water, steam, compressed air, chemical drain, fire fighting. Each with different material, pressure rating, insulation requirement.
2. Working in Active Production Environment
Factories operate 24/7 - how is laser scanning done?
#### Strategies:
A. Outside Shift Hours:
B. Modular Approach:
C. Remote Scanning:
3. Safety Protocols
Safety is paramount in industrial facilities:
| Requirement | Detail |
|---|---|
| HSE Training | Minimum 8 hours site-specific |
| PPE | Helmet, safety shoes, goggles, earplugs |
| Gas Detection | Personal H2S, LEL detectors |
| Permits | Work permit, hot work permit (if required) |
| Escorts | Production team escort mandatory |
Industrial As-Built Modeling Process
Phase 1: Pre-Project Planning (1-2 weeks)
Phase 2: Laser Scanning (3-7 days)
Scan Density Requirements:
Toyota Project Stats:
Phase 3: Point Cloud Processing (1 week)
Unique challenges in industrial facilities:
Hot Equipment: Laser beams scatter from hot surfaces (300°C+) → noise
Solution: Consider shutdown plans or prioritize cold areas
Reflective Surfaces: Stainless steel tanks, polished pipes → multiple reflections
Solution: Target-based registration + increased overlap
Vibration: Rotating equipment vibration → blurred points
Solution: Equipment shutdown or average multiple scans
Phase 4: BIM Modeling (4-6 weeks)
#### Modeling Priorities:
Week 1-2: Structural & Equipment
Week 3-4: Piping Systems
Week 5-6: Secondary Systems & Details
Phase 5: QA/QC (1 week)
Critical Checks:
On the Polyol Thyssenkrupp project, we reconciled 450+ pipe connections with P&ID. Found 12 discrepancies - after field verification, P&ID was updated. BIM model caught P&ID errors.
UÄŸur Bilen
Eos Proje
Sector-Specific Considerations
Petrochemical / Refinery
Characteristics:
LOD: 350-400 (fabrication required)
Power Plant (Linde Tiszaujvaros)
Characteristics:
LOD: 300-350
Manufacturing Facility (Toyota, Ã…ÂiÅŸecam)
Characteristics:
LOD: 300
Frequently Asked Questions
Sıkça Sorulan Sorular
150-250% more expensive because:
- MEP density 5-8x higher
- Safety requirements & training
- Complex geometry (pipe routing)
- Specialized expertise (process knowledge)
- More intensive QA/QC
Cost per m²: $2.35-3.90/m² (LOD 300, MEP included) vs. office building $1.30-1.80/m²
Yes, possible but:
- Strict compliance with HSE protocols
- Critical coordination with production team
- Phased approach (zone by zone)
- Night shifts or weekend work
- Some areas may require shutdown
On Toyota project, 80% of areas scanned under active production, 20% planned shutdown.
Tolerance levels for LOD 300:
- Horizontal position: ±10-15mm
- Elevation: ±10mm
- Pipe diameter: Nominal (accurate)
- Flange-to-flange: ±5mm
For critical tie-in points (existing+new), ±5mm recommended.
P&ID (Piping & Instrumentation Diagram): Process flow schematic
Reconciliation: Comparing BIM model with P&ID
- Is as-built actually compliant with P&ID?
- Are modifications captured?
- Is instrumentation complete?
Why Important: P&ID is operational critical document. Must be in sync with as-built BIM. We find 5-10% discrepancies in our projects (P&ID usually outdated).
| Software | Best For | Strengths |
|---------|----------|-----------|
| Revit | General industrial | Common, IFC export |
| AutoCAD Plant 3D | Process plants | P&ID integration |
| PDMS/E3D | Large refineries | Advanced piping tools |
| Navisworks | Coordination | Clash detection |
Eos Proje uses: Revit (modeling) + Navisworks (QA/QC) combo.
Related Case Studies:
Last Updated: January 25, 2026
Author: UÄŸur Bilen
Category: Industry Applications | Reading Time: ~8 minutes