The maximum benefit of DriveGrid is when it is about 8” below the paver surface. The gravel must be an approved road base gradation or a permeable base material like ¾” open graded stone (ASTM No. The gravel sits directly over the geogrid and creates a lock-up of the gravel. It is simply rolled out and placed at the bottom of your excavation (provided that it is no deeper than 12” (30cm)) before placing the gravel. It is definitely a hardscape best practice and makes good business sense, from initial savings to reduction in project callbacks and repairs. Not only is there an increased load-bearing performance when DriveGrid is used, but base thickness can be reduced up to 50% resulting in substantial savings with the reduction of excavation, gravel and compaction time required.ĭriveGrid should be used on every project. When Unilock learned about the tremendous benefits that are derived from mechanical base stabilization, we made sure to share this technology with our customers and are continuously recommending that they incorporate this inexpensive insurance into every residential hardscape. DriveGrid® geogrid, is made with Tensar Triax Technology™ and is a superior geogrid to bi-lateral geogrid in that it provides unilateral stabilization regardless of the load pressure points.

Mechanical stabilization of granular bases with geogrid is a proven technology with thousands of miles of roads around the world to its testament.

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