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Permapave stormwater inlet grates are a unique design,
and comply with Australian Standard AS 3996 for road
grates.
Permapave Stormwater Filtration Grates filter 100%
of gross pollutants from stormwater runoff prior to
entry to collection systems.
Permapave Stormwater Filtration Grates provide a safe
non-slip transition across the stormwater entry pit.
Grate surface is non-slip and safe for pedestrians,
automobiles and cyclists. Coefficient of friction exceeds
Australian Standard AUS/NZ 3661.2.
Installation of Permapave Stormwater Filtration Grates
has an immediate and long term impact on stormwater
purity. On installation, there is immediate reduction
in contaminants at outfall.
Permapave stormwater grates with a gutter
bio-retention system has exit water purity equivalent
to class 2 water, sufficiently pure for use as an urban
water resource.
Capture rates can be adjusted to suit most requirements
- up to 100 litres per second per square metre.
Grates require periodic cleaning to remove collected
contaminants. Cleaning frequency depends on rainfall
events and contaminant profile.
Cleaning is inexpensive with the Permapave cleaning
machine. Contaminants are captured for disposal
to appropriate sites.
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