The bedding layers are not bound together, like the paving above it. The large gaps allow for large amounts of rain water to be stored in a sort of sub-surface reservoir. While stormwater infiltrates ...

She was tired of seeing plastic littering the streets of Nairobi, and saw an opportunity to solve two problems at once — cleaning up the streets and paving them with plastic. Three years ago ...

Trying xeriscaping ideas may be for you if you want a backyard that doesn't require much know-how or muscle-power to maintain ...

The annual Hardscape North America Awards Ceremony took place Thursday at the Kentucky Exposition Center, honoring contractors, producers, and designers for their outstanding contributions to the ...

Paver patios, in particular, are a great option for people with flat yards who want something that's (generally) more ...

In a perfect world once the paving starts on the job it shouldn't stop until the job is finished. That perfect paving job will have a continuous mat, the most efficient use of haul trucks and ...

Some pervious concrete can be placed with a concrete slipform paver. Slipform pavers do not use forms when pouring, so Fisher says most pervious placements using this equipment is done on slabs ...

What Do Membranes Do? Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot. Small ...

The net movement of water from a region of high water concentration to a region of low water concentration through a selectively permeable membrane. This means osmosis is a special case of ...

This is a passive process, which means it does not need energy. The oxygen diffuses across the partially permeable membrane of the alveoli cells and the capillary wall, into the red blood cells to ...