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When a new township was
developed in Kulim, W Kedah, the existing waterway was unable
to cope with the increasing drainage requirements that have
to be provided. In order to accommodate the anticipated quantity
of waterflow, waterway with a larger flow capacity had to
be constructed.
The application of Anchored Earth wall allowed
construction of the waterway in Kulim to accommodate large
water flow capacity. Despite the difficult working condition
at site, Anchored Earth wall provided a viable and economical
solution in the construction of waterway as compared to reinforced
concrete wall. The construction of Anchored Earth wall was
rapid and without much difficulties in this situation where
site was limited.
The wall was 4.5m high and river sand, which
was readily available at site, was used as backfill material.
Behind the wall facing panels, drainage aggregate of 20m diameter
was placed and Polyfelt geotextile was used as filter between
the aggregate and backfill. At the toe of the wall, rock armour
was placed below the wall footing to protect the toe against
scouring. Geotextile was also used as filter in that region.
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