Benkelman Beam
The Benkelman beam measures the deflection of a flexible pavement under moving wheel loads. Extremely accurate and easy to use. Direct-reading dial indicator eliminates need for conversion tables or field calculations. This pavement analysis tool provides the following features:
- Precision accuracy
• Easy to use on test site
• Lightweight, quick set-up
• Easy to transport, easy to store
• No need for conversions or field calculations, gauges are direct read.
| Features | Benkelman beam | Lacroix | FWD | Curviameter | |
| device requirements | loaded truck with 2 Benkelman beams | measurement car | measurement car | measurement car | |
| staff | 4 pers. | 2 pers. | 2 pers. | 2 pers. | |
| requisitioning | static | quasi-static | dinamic | quasi-static | |
| simulated speed | 0 km/h | 4 km/h | 60-80 km/h | 18 km/h | |
| sampling method | discrete | continuous | discrete | continuous | |
| sampling density | 25 m | 4 m | 25 m | 5 m | |
| daily performance | 15 km | 20 km | 15 km | 25-35 km | |
| measured parameters | D0 deflection | D0 deflection | deflection bowl | deflection bowl | |
| recording datas | manual | automatic | automatic | automatic | |
| repeatability | good | excellent | excellent | excellent |