GEO-GRID

INSTALLATION GUIDELINES

SITE PREPARATION Start by clearing out all debris, stumps, plant growth and rocks. In area of very low subgrades, it may be beneficial to leave some vegetation, topsoils, and fine root mats in place. Proper equipment should be used to smooth and compact the subgrade LAYOUT and PLACEMENT GeoGrid rolls are commonly rolled parallel with the roadway system. The rolls should be overlapped 1 to 3 ft side-to-side and end-to-end. The overlapping should be in the same direction as the aggregate placement. For curved sections, the GeoGrid should be cut and overlapped. Cutting of GeoGrid may be done with sharp shears and other handheld cutting devices. The GeoGrid may also be cut to accommodate protrusions such as manhole covers. Once layout and overlap requirements have been determined, you can prepare to roll out your GeoGrid. The GeoGrid should begin to be rolled out from an area easily accessible to construction equipment while complying with the layout plan. For very soft subgrades, the layout should begin on firm soils on the perimeter of the project. This will act as an anchor point from which you can roll GeoGrid onto softer sections. TENSIONING AND ANCHORING While unrolling GeoGrid, maintain alignment and pull to remove slack and wrinkles. Do not roll out too much GeoGrid at once. Anchor the beginning of each roll at the center and corners before fully unrolling the material. To hold GeoGrid in place prior to aggregate placement, soil, rocks, or other weights may be used to hold the GeoGrid edges and overlaps in place. AGGREGATE PLACEMENT aggregate is ususlly back dumped and spread over the placed GeoGrid. For soft subgrades, standard rubber-tired vehicles may drive over GeoGrid at very slow speeds. Heavy trucks and other construction vehicles should not be driven directly over GeoGrid.