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Geogrid Fabric For Retaining Walls

Geogrid Fabric For Retaining Walls

$155.87


FREE SHIPPING
SKU GSRW-3450

Geogrid Fabric for Retaining Walls is the ideal ground stabilization solution for retaining walls. The geogrid is made of strong polyester fibers that are woven together for strength and then coated with PVC plastic for added durability. The geogrid is placed during wall construction and works to trap the aggregate rock in the grid stopping it from moving laterally and improving soil stability.

This geogrid fabric is engineered with retaining walls in mind and this technology enables stronger and larger walls to be constructed for civil and landscape applications. 


3 Series – For wall applications up to 10 ft in height

5 Series – For wall applications over 10 ft in height


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PRODUCT HIGHLIGHTS

- Various Geogrid series and size options available

 
Applications Include:

- Retaining walls
- Steep slopes
- Sub-grade stabilization
- Soft soils under embankments
- Waste containment/landfills

Geogrid Placement Diagram
Geogrid Placement Direction

GEOGRID SHIPPING TIME

Shipping estimates shown on the map pertain to this specific product only. Fabric orders typically ship next business day if the order is placed before 12:00 noon CST. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.

The transit times displayed on the map are for our free shipping option.

PRODUCT INFORMATION:

Retaining Wall Under Construction

Geogrid Fabric For Retaining Walls

How Geogrid Fabric Works For Retaining Walls

Mostly, geogrid (also known as retaining wall mesh) is used to distribute concentrated loads over wider areas and in some cases under footings, roadways, or other areas that need subgrade support.  Another purpose is acting as reinforcement in retaining walls. If you want to know if geogrid is worth your investment as a homeowner or builder, rest assured it is. Geogrid is relatively inexpensive and will give excellent added strength to driveways, patios, and subgrades.

The most used forms of geogrid are uniaxial, biaxial, and triaxial grids.  Grid types are chosen based on the kind of loading the soil will come in contact with. For retaining walls, the primary loading is perpendicular to the wall face therefore uniaxial (multi directional for shorter walls) is the choice for retaining walls. For other applications such as roadways and parking lots where loading can be in any direction, a biaxial or triaxial grid should be used.

How Does Geogrid Work?

We have been asked many times what geogrid does during road construction or how geogrid helps soil support more load. The answer is actually simple but the explanation can be less clear.

Geogrid retaining wall fabric spreads concentrated loads from vehicles or footings over a wider range which will reduce settlement and movement.  This answer works for most workers on-site but some want more information regarding how geogrid actually spreads the load out.


As an example, let's say you have a box filled with loose sand, you would expect your hands would sink into the sand for some distance, then stop when you hit resistance. The resistance is from the particles in the sand in the box rubbing against each other and coming closer and closer to each other until the friction between the pieces of sand equals the force you are using to push down on the sand.

The soil gives way and moves around under roads, footings, or foundations is called settlement. Geotechnical engineers do not like settlement but they have a solution that requires using geogrid.  By using geogrid, the particles of sand will be transferred into the geogrid and become interlocked with the geogrid. The geogrid offers tensile resistance that is stronger than the frictional forces that were provided by the resistance of your hand.

The geogrid will transfer the load caused by the soil letting some of the interlocking particles within the soil to penetrate through the apertures of the grid. The particles that have penetrated through the aperture and then forced into the ribs will create tension and spread over the surface area of the grid.

Moreover, the larger the surface area, the less pressure will be placed on the soil below the grid, less movement for the soil above the grid, less settlement of the surface, and will improve the strength of the soil surface. All-in-all, this is very important. If you are constructing a new driveway, make sure your contractor uses geogrid, it's cheap and will be very effective.

How Uniaxial Geogrid Works In Retaining Walls

In most cases, uniaxial geogrid is used for retaining walls.  Uniaxial does not work the same way as biaxial or triaxial grids because it can only be loaded in one direction which is along its stronger axis. It does not control settlement but serves as an anchor. You can easily see which is the stronger axis of the uniaxial geogrid. This axis is thicker and stiffer than the thinner fabric or thread holding the grid together. When constructing a retaining wall, this is important for the overall performance of the grid.

Uniaxial geogrid applies the soil's own weight to support the wall effectively by anchoring the wall to the soil and causing the entire retained soil to act as a singular bulk volume with the wall by holding back the unreinforced soil from behind. The grid is placed on top of the block section and then pinned by the next course of blocks making sure the grid is positioned to serve as a strong axis that runs crosswise to the wall face.  The chosen backfill material should then be placed at the wall and compacted toward the end of the grid for more tension.

Side View of Geogrid for a Retaining Wall

Diagram of Geogrid Used for Retaining Wall

Retaining Wall Falling Apart

Example of Poorly Constructed Retaining Wall

The reinforced soil is compacted during construction so it pulls back on the retaining wall blocks. Soil that would have pushed the retaining wall over in an unreinforced wall manner is now actually helping to hold it up as a reinforced wall. This will lock the retained soil and blocks to form together allowing the entire mass to work against the unreinforced soil.  Geogrid placement, lengths, and types are important and are all included in the design packages. They are inspected during construction to ensure everything is built to spec.

Note: Not all geogrid is the same. Retaining wall grid is meant specifically for wall reinforcement. We also have Geogrid for driveways as well.