DRIVABLE GRASS® Permeable, Flexible and Plantable Concrete Pavement System

DRIVABLE GRASS® is a permeable, flexible and plantable concrete pavement system that is environmentally friendly, aesthetically pleasing, and an alternative to poured concrete, asphalt and interlocking concrete pavers. DRIVABLE GRASS® is designed with an engineered polymer grid, which allows the product to be flexible and conform to irregular ground surface contours along pre-defined linear grooves, while providing the intended structural support. DRIVABLE GRASS® facilitates the growth of a continuous root system below the product in the bedding course, promoting healthy turf while minimizing...

DRIVABLE GRASS® The perfect paving choice for a wide variety of applications. PARKING LOTS GOLF COURSES BOAT RAMPS FIRE LANES DRAINAGE SWALES OTHER APPLICATIONS INCLUDE: Maintenance Yards, RV Parks, Slope Armor, Trickle Channels, Stream Bank Installation, Culvert Outlets, Helicopter Pads, Courtyards, Patios, Pet Digging Control, Trash Can Pads, Road Shoulders, Green Roofs. UTILITY EASEMENTS

Strength and Durability! “Soil Retention’s DRIVABLE GRASS® product was just the solution we were looking for. Providing the strength and durability we require while at the same time solving our run off water issue.” - Former Oceanside Fire Chief Oceanside, CA

Photo Courtesy of Pitzer College TESTED AND PROVEN! Emergency access can be built in a low-impact, yet dependable manner. Grass paving has become a popular application for emergency vehicle access with many benefits; while blending them into the landscape, and maximizing buildable area, grass paving does not sacrifice green-space. In recognition of the loading requirements for heavy vehicles such as fire trucks, Soil Retention elected to test DRIVABLE GRASS® in a heavily used application. The product was installed at a fire station truck wash area that was retrofitted due to requirements of the...

PLANTED PARKING Designed for daily use! DRIVABLE GRASS® is the premier plantable paving system for daily parking. DRIVABLE GRASS® has bearing properties similar to concrete and asphalt while the void spaces are able to prohibit compaction within the root zone. DRIVABLE GRASS® is a wet cast concrete mat with an engineered grid cast inside. Individual pads are intended to flex at the joints and the grid is designed to allow for long term settlements. As demand grows for alternative parking options to conventional asphalt and concrete surfaces, DRIVABLE GRASS® is an ideal paving choice for these...

NON-PLANTED PARKING If planting is not an option based on existing conditions, design considerations or regulatory constraints, DRIVABLE GRASS® can be used with non-planted infill choices. Installed with non-planted infills such as decomposed granite, B U F F / TA N angular rock up to 3/8” minus, or artificial turf, the system can provide the same durable solution as a planted application. Staggering of the mats and staking are considerations for non-planted infills. Visit our website at www.soilretention.com for detailed specifications and drawings.

Alternative Planting And Infill Options DECOMPOSED GRANITE INFILL AGGREGATE INFILL AGGREGATE INFILL / TURF NATIVE GROUNDCOVER AGGREGATE INFILL ARTIFICIAL TURF DRIVABLE GRASS® can be used with a variety of alternative planting and infill options, whether the reason is an environmental concern, aesthetic choice, regional climate response or regulatory constraint. Alternative infills divide into two classes: alternative planting and non-planted materials. Alternative plants for DRIVABLE GRASS® include ground covers and non-turf grasses. With alternative plants, the installation profile remains the...

Where reduced water consumption is a consideration, DRIVABLE GRASS® can be installed using alternative planting and infill options.

DRIVABLE GRASS® enables storm water to infiltrate into the underlying permeable base and exfiltrate to the native subgrade. When using open graded aggregates with a void space of 30-40% as base material, significant amounts of water can be collected and stored for reuse as irrigation through rain water harvesting techniques. Storm water is filtered by the turf grass and the biosystem that naturally occurs within the root zone soil. By employing this type of bioretention in permeable parking stalls, permeable swales and other rain garden strategies, DRIVABLE GRASS® can eliminate the need for storm...

Erosion Control and Drainage Solutions Typical Drainage Swale Detail DRIVABLE GRASS® Mats Adjacent Surface BIO SWALES Adjacent Surface ROAD SHOULDERS Slope ROADSIDE SWALES INFILTRATION BASINS DITCHES Filter Fabric or Rolled Erosion Control Product as Required 1” Well Graded Sand or Smooth Subgrade Existing Subgrade Compared to traditional concrete curb and gutter, DRIVABLE GRASS® used as drainage swales and small channels allow infiltration, slow down run-off, and provide water to surrounding landscape and aquifers. DRIVABLE GRASS® is a simple solution to linear projects that are required to...

Design Considerations DRIVABLE GRASS® INTENDED USE Stuctural Design Stormwater Design Vegetation Design Traffic Load Existing Soil Type Applicable Regulations - Design Storm - Percolation Rate of Native Soils Aesthetics Region Frequency of use Irrigation Base Thickness/Type Full Exfiltration Partial Exfiltration Storage/Detention Elevated Subdrain Storage/Retention Harvest/Collection Impermeable Membrane DRIVABLE GRASS® Structural Design Guidelines Subgrade USCS Classification Typical R- Value Range Typical CBR Value Range Application Firelane Parking Lots Stalls Parking Lots Traveled Way Residential...

Typical Commercial DRIVABLE GRASS® Detail Drivable Grass® Seed, Hydroseed, Plug, or Sprig Planting Sod: Overfill Bedding ~0.25” above Mat Surface Seed Cover Edging or Concrete Header as Required Infill with Bedding Course Mix Finished Grade @ Perimeter Bedding Course: Install 2” nominal of 75% Clean Sharp Sand (ASTM C33) 25% Granular Compost Base Thickness per Soils Engineer Filter Fabric if Required by Soils Engineer Subgrade per Soils Engineer Installation Overview Step 1 - Subgrade Preparation • Excavate and prepare subgrade as specified • Install filter fabric, if required Step 2 - Install...