Presto Geosystems
GEOWEB® 3D Soil Confinement
This resource package offers tools & resources to design high-performing, long-lasting rail infrastructure ─ track, yards, embankments and channels.
Key Rail Applications
- Ballast Reinforcement
- Embankment Stabilization
- Yard Stabilization
- Stormwater Channels
Take the tour. See how geocell soil confinement benefits the most challenging soil and ballast stability issues in rail applications.
How 3D Soil Confinement Benefits Rail
Strengthens & Transforms Fill
With the GEOWEB® system, fill materials are confined and stabilized — even under the heaviest loading or steepest grades. The benefits? Higher performance and lower maintenance —of track, pavements, embankments & channels.
Ballast Reinforcement
Typical Track Problems Solved by the GEOWEB System
Common Soft Subgrade Issues
- Differential settlement
- Pumping and heaving
- Ballast contamination
- Poor drainage
Leads to:
- Ballast attrition
- Maintenance/shutdown
- Speed reduction
- Worst case – derailment
Benefits Delivered by the GEOWEB System
Track:
- Reduce ballast attrition
- Bridge poor sub grade soils
- Reduce tamping and maintenance cycles
Special Track Work
- High G force wheel impacts
- Extend life and reduce repair cycles
Bridge Approaches
- Provide high G force transition area
- Reduce settlement
Grade Crossings
- 90-degree loading
- Rigit transition
Ballast Reinforcement Benefits
Use of Lower Quality Fill
Save on Hauling and Material Costs. When fill is confined in the GEOWEB® system — on-site low-quality infill may be used — even coarse sand or salvaged ballast. Use of lower quality fill is a significant savings on hauling and material costs versus imported ballast.
Facilitates Better Drainage
No-Fines Infill Improves Drainage. For poor drainage areas, fill with limited fines can be used as the GEOWEB cells provide the confinement and aid compaction of cohesionless soils.
- drainage is significantly improved
- water flows freely through the system preventing pore pressure build up and potential for global failure of the ballast section
Reduces Cross-Section Thickness
GEOWEB®-confined sub ballast delivers structural benefits that reduce cross section thickness by up to 60%. The improvement results in significantly less installation and rehabilitation costs.
