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Rabu, 09 Maret 2011
“Green pavement,” a relatively new concept in green building, is a permeable and porous pavement that absorbs rainwater instead of repelling it. It combines the load-carrying capacity we expect of paved areas with the water-infiltration qualities of natural ground cover.
Here’s a look at how this environmentally friendly setup works.
There are three types of permeable pavements:
1. Plastic pavers: A plastic honeycomb grid in which grass or other vegetation can grow
2. Concrete pavers: Concrete blocks withspaces in betweenthem for better drainage.
3. Asphalt/concrete: Fine particles are left out of it to make it more porous.
Common uses forpermeable pavement:
- Driveways
- Emergency access lanes
- Public parks
- Alleys
- Parking lots
- Bike or walking paths.
source: http://www.mytorontohomeimprovement.com/permeable-pavements.htm
Green pavement is strong enough to hold a helicopter:A 100-sq/m area of lawn at Buckingham Palace was replace with a turf system for a helicopter landing pad. Helicopters, which had been previously landing on the lawn, were causing coinsiderable damage to the area which required constant repair.
PROS OF GREEN PAVEMENT
- Green pavement is permeable and porous — absorbs water instead of repelling it.
- Water is returned to the ground instead of being washed into the sewers.
- Many green pavement products are made from recycled materials.
- Can eliminate the need for gutters and storm sewers.
- Doesn’t ice up as quickly in the winter as water does not pool on the surface.
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