Define Terms

Base Material - A base pad of granular material, compacted and leveled to receive the base course of AB units.

Reinforced Zones - Area located directly behind the block that runs to the end of the area being reinforced by any geogrid reinforcement material.

Consolidation Zones - The 3 ft. (0.9 m) area directly behind the back of the block and extending toward the back of the excavated area.

Compaction Zones - The area located behind the consolidation zone that runs to the end of the area being disturbed by any construction activities.

Geogrid - A manufactured high strength reinforcement grid material that comes in rolls of various sizes and strengths.

Infill Soils - The soil used to backfill behind the wall rock in the reinforced zone. These soils need to be identified and approved by a qualified engineer before they can be used. A granular type of material is best.

Drain Pipe - Used to direct incidental water that makes its way in behind the reinforced mass, and vents it to daylight by creating a channel for the water to flow out from.

Wall Rock - Compactible aggregate ranging in size from 0.25 in to 1.5 in. (6 mm to 38 mm) with no more than 10% fines. Used for base material, within block cores and behind the block.