Geoscience Reference
In-Depth Information
Table 16.15 Geotextile overlap based on load type and in situ CBR value (adapted
from Koerner, 1995).
CBR value
Required overlap distance for traffic loading
Light duty - access
Medium duty - typical
Heavy duty - earth
roads
loads
moving equipment
0.5%
800 mm
1000 mm or sewn
0.5-1.0%
700 mm
900 mm
1000 mm or sewn
1.0-2.0%
600 mm
750 mm
900 mm
2.0-3.0
500 mm
600 mm
700 mm
3.0-4.0
400 mm
450 mm
550 mm
4.0-5.0
300 mm
350 mm
400 mm
5.0
250 mm minimum
>
All roll ends
800 mm or sewn
100 mm or sewn
 
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