1. Product Description
The GeoPave® Permeable Pavement System provides a confined strengthened aggregate roadway surface and functions naturally as an onsite retention system for stormwater. The GeoPave system consists of GeoPave units, a gravel base course below and open-graded gravel infill in the GeoPave units. A geotextile and /or geogrid underlayer may be added below the aggregate base. Additional storage capacity can be added by increasing the base gravel thickness below or connecting the system to underground storage tanks which Layfield also supplies. The system can be designed for heavy loading including heavy fire trucks. The GeoPave units are made from reclaimed polyethylene that are interconnected together with metal "U-Clips", creating a strong load distribution system. A monolithic mesh bottom keeps aggregate confined. Each paving unit is 50 mm thick and 1 m long X 0.5 m wide each. Applications include emergency & utility access lanes, lay down yards, roadways and parking lots, driveways, walkways and trails. For a vegetated paving system we recommend our Geoblock® system.

2. Technical Data
Materials information is on page 2.

3. Installation
Complete the excavation and any site preparation as required and remove any large rocks or objects. Then install any specified sub-drain pipes, outlets and geosynthetic underlayer (geogrid and/or geotextile). Place and compact the base gravel to the depth and grades required and grade the area smooth at the required elevation. Place the first row of GeoPave units in the specified pattern with reference against a straight edge. Connect the GeoPave units together with the U-Clip connection devices. For GeoPave on slopes, anchor the units by driving in 13 mm (1/2 inch) rebar through the units to prevent movement. Place the infill gravel material and maintain at least 13 mm (0.5 inches) of gravel over the top of the cell walls. There should be no traffic on the GeoPave units until the infill is completed. Refer to and follow the installation guideline and any project specific requirements in the plans, specifications and tender documents.

4. Availability and Cost
Available from Layfield or distributors. Call
425-254-1075 Pacific time 
780-453-6731 Mountain time, or 
905-761-9123 Eastern time

5. Manufactured For
Layfield Environmental Systems Corp.
Layfield Geosynthetics & Ind. Fabrics Ltd.

6. Warranty
Products sold will meet Layfield's published specifications at time of sale. Full warranty details are available from Layfield.

7. Maintenance
Permeable paving systems should be inspected at least annually and any damage repaired. Snow removal should be with plastic or rubber bottomed plows only.

8. Filing Systems
www.LayfieldGroup.com
www.geomembranes.com

 

9. Material Properties

28 Oct 2011	GeoPave Material Properties
Property	GeoPaveTM
Material	Up to 97% Reclaimed Polyethyelene
Chemical Resistance	Superior
Carbon Black	1.5% to 2%
Minimum Crush Strength- Empty Unit	175 psi (1,202 kPa)
Minimum Crush Strength - Filled Unit	1000 psi (6,869 kPa)
Nominal Dimensions	20 inch x 40 inch (0.50 m X 1.00 m)
Nominal Unit Depth	2 inch (50 mm)
Cell size (small cell)	3.25 in x 3.25 in (83 mm X 83 mm)
Cell size (large cell)	3.25 in x 6.5 in (83 mm X 165 mm)
Bottom Mesh Openings	0.25 in x 0.25 in (6.3 mm x 6.3 mm)
Nominal Coverage Area per unit	5.38 ft2 (0.50 m2)
Nominal Weight per Unit	8.0 lb (3.6 kg)
Runoff Coefficient @ 2.5 in (63.5 mm) /hr rainfall	0 - 0.15