Permeable Interlocking Concrete Pavements are comprised of a layer of concrete pavers separated by joints filled with small stones. Water enters joints between solid concrete pavers and flows through an “open-graded” base, i.e. crushed stone layers with no small or fine particles. The void spaces among the the crushed stones store water and infiltrate it back into the soil sub grade. The stones in the joints provide 100% surface permeability and the base filters storm water and reduces pollutants.
Permeable Interlocking Concrete Pavers (PICPs) are eligible for LEED® credits under the U.S. Green Building Councils guidelines. These requirements limit runoff and water pollution by managing storm water. These pavements can reduce runoff-generating impervious cover and decrease the rate and quantity of runoff.
The design of the Washington 21® Permeable Paver allows water to flow around and through the paver joints effortlessly. The design is dynamic enough to also allow these units to be used in conjunction, seamlessly with our standard Washington® System allowing for flexible design between permeable and non-permeable areas in the same design.
ALL PERMEABLE PAVER COLORS ARE NON-STOCKED.
Washington 21 Permeable Pavers Environmental Benefits
Superior control of short-duration stormwater runoff (to near 100%)
Reduced downstream flows and minimized potential for bak erosion
Critical improvement of water quality using natural filtration methodology
Valuable cooling effect during first runoff capture
Flexible capacity for detaining water under road or parking surface
Running Bond 21
Left - Vintage Washington Permeable Right - Washington Permeable
Half Unit - 5 1/2 x 4 1/8 x 3 1/8 Full Unit - 5 1/2 x 8 1/4 x 3 1/8
Colors click to enlarge
Left to Right Top Row:
Antique Blend, Autumn Blend, Canyon Creek Blend
Earth Blend, Flagstone Blend, Granite Blend
shown should only be used as a guide. Always choose colors from
actual samples available at any of our locations.