AGVHub
Floor and Facility Requirements
What floor and building requirements must be met for AGVs? Flatness, load capacity, joints, and other critical factors.
Why is the Floor So Important?
The warehouse floor is the foundation of every AGV system. A poor floor leads to:
- Increased wear on wheels and drives
- Navigation problems and position errors
- Reduced travel speed
- Load damage from vibrations
- Increased energy consumption
Flatness Requirements
Flatness is measured according to DIN 18202 or comparable standards:
Tolerances by Application
| Class | Deviation at 2m | Suitable for |
|---|---|---|
| Enhanced (FFl) | ≤ 3 mm | Very narrow aisle, precision AGVs |
| Standard | ≤ 5 mm | Most AGVs |
| Basic | ≤ 8 mm | Robust AGVs, low speed |
Local Irregularities
Beyond overall flatness, local defects are critical:
Problematic
- Cracks > 5mm wide
- Steps > 3mm
- Holes and breakouts
- Severe warping
- Loose surface
Acceptable
- Fine hairline cracks
- Slight color differences
- Minor texture variations
- Clean joints with filler
Joints and Transitions
Joints are particularly critical for AGVs:
Types of Joints
| Joint Type | Description | AGV Relevance |
|---|---|---|
| Contraction joints | Cut lines for controlled cracking | Usually unproblematic |
| Expansion joints | Movement joints between sections | Can cause problems |
| Building joints | Separation of building parts | Critical, often crossed |
Joint Requirements
- Width: Maximum 6mm (preferably ≤ 4mm)
- Height offset: Maximum 3mm
- Filling: Elastic joint material installed flush
- Angle: Cross at an angle if possible (not parallel to travel)
Surface Condition
Grip
AGVs need sufficient traction:
- Too smooth: Wheels spin, position errors
- Too rough: Increased tire wear
- Optimal: Slightly textured surface (e.g., power-floated industrial concrete)
Coatings
| Coating | Suitability | Notes |
|---|---|---|
| Uncoated | Good | Dust possible |
| Epoxy | Very good | Ensure adequate grip |
| Polyurethane | Good | More elastic, good durability |
| Tiles | Limited | Joints problematic |
Load Capacity
The floor must support the point loads of AGVs:
Example Calculation
AGV with 2t own weight + 1t payload, 4 wheels
Total load: 3,000 kg
Load per wheel: approx. 750 kg
Required capacity: Minimum 1,000 kg/wheel (with safety factor)
Environmental Conditions
Temperature
- Operating range: Typically +5°C to +40°C (41°F to 104°F)
- Condensation: Avoid (electronics!)
- Cold storage: Special AGVs required
Lighting
- For camera navigation: Minimum 200 lux
- Even illumination without glare
- Consider daylight variation
Cleanliness
- Regular cleaning of travel paths
- No loose objects in travel area
- Avoid oil spots and moisture
Floor Assessment Checklist
Check before AGV implementation:
- [ ] Flatness measurement per DIN 18202
- [ ] Document all joints and their condition
- [ ] Check for cracks, breakouts, steps
- [ ] Load capacity verification
- [ ] Surface condition assessment
- [ ] Environmental condition measurement
Remediation Options
If the floor doesn't meet requirements:
| Measure | Effort | Cost |
|---|---|---|
| Joint repair | Low | $ |
| Local patching | Medium | $$ |
| Coating | Medium | $$ |
| Overlay (thin screed) | High | $$$ |
| Complete renovation | Very high | $$$$ |
Conclusion
A good warehouse floor is essential for trouble-free AGV operation. Invest in a professional floor analysis and budget for remediation if necessary.