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woven geotextiles

Applications and Effective Use

Woven geotextiles are used extensively to separate soil layers. The products are comprised of woven slit film polypropylene materials. Typical uses are beneath driveways, parking lots, residential streets and highways. This product group has been found to be particularly effective in bridging over weaker or less desirable subgrade materials.

It should be installed anywhere sediment can flow off the site, and is designed to intercept and retain sediment in disturbed areas.

For more than half a century, woven geotextiles have delivered consistent results in lowering costs and in realizing positive performance results. Because these products have consistently contributed to better performance and lower short and long term costs, their use and acceptance has increased tremendously in a relatively short period of time.

For Installation, Inspection, Maintenance and Removal

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nonwoven geotextiles

Applications and Effective Use

Nonwoven geotextiles are used extensively to separate soil layers and also in drainage applications. Comprised of needle punched polypropylene, nonwoven geotextiles are highly permeable, and allow positive water flow while maintaining strong soil separation performance.

The products are often used in backing rock riprap and in French drain installations, helping to achieve both separation and filtration. The products in this group range from lightweight to heavyweight, with specifications driven by specific site and installation requirements.

Nonwoven geotextiles have delivered consistent results in lowering costs and in realizing positive performance results. Because these products have consistently contributed to better performance and lower short and long term costs, their use and acceptance have increased tremendously in a relatively short period of time.

For Installation, Inspection, Maintenance and Removal

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woven monofilament

Applications and Effective Use

Comprised of individual woven polypropylene fibers, woven monofilament geotextiles possess unique characteristics designed to assist when both separation and filtration are required. When properly matched to site soils, the products allow for enhanced flow rates while maintaining strong soil layer separation. They are often used in areas where the combination of durability, high flow rates and solid separation are all required. Typical applications include bank stabilization, rock underlayment and spillways.

Woven monofilament geotextiles have delivered consistent results in lowering costs and in realizing positive performance results. Because these products have consistently contributed to better performance and lower short and long term costs, their use and acceptance has increased tremendously in a relatively short period of time.

For Installation, Inspection, Maintenance and Removal

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spun bound fabric

Applications and Effective Use

Spun bonded geotextiles are non-woven and deliver a distinctive combination of high permeability and high strength. In the manufacturing process, polypropylene is spun, rolled and heated to produce a very tough yet permeable finished product. The products are often used in areas where toughness and long product life are required, such as septic systems, subsurface drainage and in landscaping.

Spun bonded geotextiles have delivered consistent results in lowering costs and in delivering positive performance results. Because these products have consistently contributed to better performance and lower short and long term costs, their use and acceptance has increased tremendously in a relatively short period of time.

For Installation, Inspection, Maintenance and Removal

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geomembranes

Applications and Effective Use

Geomembranes are synthetic membranes with very low permeability. The products are most used as barriers to fluid migration. Typical applications include pond liners, landfill covers and landfill liners. There are many types of geomembanes on the market, with high-density polypropylene (HDPE), low density polypropylene (LDPE) and polyvinyl-chloride (PVC) being the most common.

For Installation, Inspection, Maintenance and Removal

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confinement systems

Applications and Effective Use

Cellular confinement systems have proven effective in a wide variety of applications. The individual cells can be vegetated or filled with stone or concrete.

Most cellular confinement panels are perforated, allowing for more even drainage, better locking in of stone, and assisting with long term root reinforcement in vegetated systems.

Uses include load support, earth retention, slope protection and channel protection. Applications are widely varied, and include roadway base reinforcement, living retaining walls, drainage swale lining and boat ramp stabilization.

For Installation, Inspection, Maintenance and Removal

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roadway stabilization grids

Applications and Effective Use

Roadway stabilization geogrids are widely used to improve the performance and extend the life of traffic bearing surfaces. The products are installed under parking lots, city streets and highways. The technology has proven to improve long-term traffic bearing performance. The combination of a geogrid installation and its aggregate covering forms a platform that can reduce the volume of aggregate required.

From a value engineering perspective, using geogrids in conjunction with aggregates contributes to both significant cost savings and better results.

The performance of roadways and other paved surfaces is tied directly to base course stability, and for decades geogrids have proven themselves in the field.

For Installation, Inspection, Maintenance and Removal

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earth stabilization reinforcement grids

Applications and Effective Use

Earth reinforcement grids are commonly used to stabilize soil layers, both on slopes and behind retaining walls. Used in combination with proper compaction and engineered design, they can provide long-term soil stabilization on steep and long slopes and behind vertical wall structures.

On taller walls, soil stability takes on even greater importance. Earth stabilization grids are typically rolled out perpendicular to the wall or soil surface. In most cases, the embedded length is 60-80% of the wall or slope height.

For Installation, Inspection, Maintenance and Removal

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gabions and reno mattresses

Applications and Effective Use

Gabions and Reno Mattresses are rectangular metal wire baskets that are filled with stone to form three dimensional structures. Depending on jobsite requirements, the wire component can be galvanized steel, PVC coated or stainless steel.

The products are widely used for retaining walls, channel lining, culvert outfalls, slope stabilization and weirs. Typically, gabions, in the form of cubes, are used for wall construction. Reno Mattresses, on the other hand, are flatter and more elongated, and are often used to line spillways or channels.

This technology has been proven over centuries of use. Gabions and Reno Mattresses are highly permeable structures that over time will fill in with silt and promote vegetative growth and blend in with the surrounding environment.

For Installation, Inspection, Maintenance and Removal

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Ground Stabilization, by definition, is the stabilizing of soil and earth by human intervention. For purposes of this manual, we are dealing with unstable grounds as a result of weather or construction. Ground Stabilization measures help stabilize land and ground so that structures can be safely and properly installed.


StormWater Field Guide