landfilldesign.com
Sliding:Access
Ramp - Design Calculator
This calculator evaluates the sliding of the access ramp, or verifies if the ramp subbase is stable under load. A typical cross section of an access ramp is displayed below:
The Factor of Safety is given as follows:
with advised minimum FS:
| Factor of Safety | Type of load |
| 3.0 | Static |
| 2.0 | Dynamic |
| Ws | Weight of roadway (Ws=γ * w * L * t) |
| Wv | Weight of the vehicle (metric tons) |
| Fdeceleration | Vehicle braking force (= 0.3* Wv ) |
where
| γ | Unit weight of the base layer |
| w | Ramp width |
| L | Ramp length |
| t | Ramp thickness |
| β | Slope |
| δ | Friction interface angle |
where the lowest shear force will be used in the calculations, this is lowest shear force resulting from the different friction angles from the different interfaces.
"Designing with Geosynthetics." R.M. Koerner , Prentice Hall Publishing Co., Englewood Cliffs, NJ, 1998.
"Geosynthetic Design Guidance for Hazardous Waste Landfill Cells and Surface Impoundments" G. N. Richardson and R. M. Koerner , 1987.
Copyright 2001 Advanced Geotech Systems. All rights reserved.