Geoscience Reference
In-Depth Information
Figure 1
Project site.
impact if it were placed on, or close to, the slope surface. It was therefore decided
to locate it underneath and up the rear face of the reinforced soil block.
2 DESIGN OF STEEP SLOPES
2.1 Design Brief
The engineer invited Tensar International Ltd. to assist with specialist design
support in developing the reinforced soil design beyond the concept stage.
Lake 1, with the geomembrane lining located below the reinforced soil
block, presented two unusual reinforced soil design challenges:
1. The potential
for sliding of
the reinforced soil block over
the
geomembrane.
2. The combination of the large number of possible water levels (within
both the lake and external ground) and various imposed loadings
conditions, phased with the subsequent highway and landscaping
contracts.
Furthermore, the design brief called for a low-cost durable face with a 120-
year life and high security against washout of the fill.
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