Environmental Engineering Reference
In-Depth Information
Opportunities for Retrofitting: Rain gardens can be constructed at a low
cost in new or existing sites. They could be easily retro
tted to existing
domestic houses, commercial and industrial buildings with downpipes con-
nected to subsurface water drains.
What Is Permeable Paving?
Permeable pavement is a method of paving that allows water to in
ltrate into
the ground as it falls rather than running off into piped storm water drainage
system. Porous pavements are mostly suitable to be implemented on light
traf
c volumes, parking lots, private
driveways, pedestrian paths or footpaths, public squares, etc. They are most
effective when used in conjunction with other measures such as vegetable
swales, cisterns, etc.
c loads such as streets with low traf
Source Water Sensitive Urban Design in Sydney
http://www.wsud.org/
Common Types:
Porous asphalt is the same as regular asphalt except it is manufactured
with the
fine material omitted, leaving voids that allows water to in
ltrate.
Concrete, ceramic or plastic pavers
—
Designed to leave gaps between
allowing run-off penetration.
Grid systems or open cell pavers are made from plastic or concrete grid
filled with soil or aggregate so that water can percolate through
.
Source University of Maryland Extension (
2011
)
Design Characteristics: There are several options for the design and con-
struction of systems. After in
ltrating through the pavement surface, the
water can be stored in a sink tank or in plastic cellular systems.
Search WWH ::
Custom Search