Skip to content
 

 

Retaining Wall Reinforcement Grid

$155.87

FREE SHIPPING
SKU RRG-3450

Retaining Wall Reinforcement Grid is the ideal retaining wall support solution. The mesh grid is made of strong woven polyester yarn that is reinforced and coated with PVC plastic. The geogrid is for retaining walls stabilization and stops the movement of aggregate rocks from shifting and becoming unstable. The geogrid is a crucial element of wall stability.

This geogrid is made of durable polyester yarn fibers and is then coated in PVC to further harden the grid.  A reinforcement grid is designed with retaining walls in mind. It enables walls to be built taller and help prevent soil collapse and project failure. 


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

5 Series – For wall applications over 10 ft in height


Free Shipping


FREE SHIPPING
     
 Require a written quote?
Request Online >

 Questions? Call (800) 748-5647

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.

Retaining Wall with Geogrid Installation

Retaining Wall Reinforcement Grid Installation

Construct A Retaining Wall Using Geogrid

You have decided to build a retaining wall on your property. For your DIY project, you have to choose geogrid to provide added strength for your wall. In this article, we are going to talk about small block retaining walls used in DIY projects that are very popular with homeowners. Our Geogrid for retaining walls is a great choice for these small blocks do not require any equipment to move them around and are very easy to place by hand. If you follow all the steps in order and apply the proper applications, you will discover this is not a complicated project but you will certainly get the retaining wall you are looking for.

There are two kinds of small retaining walls, gravity retaining walls and reinforced retaining walls. The Gravity Retaining Wall is a retaining wall that totally relies on the blocks to hold back the soil. This is not always the best choice as a small block retaining wall must be very short and can only use small blocks. The Reinforced Retaining Wall depends on all the blocks and the geogrid that is installed behind it. Reinforced Small Block Retaining Walls can be created to be very strong which means geogrid is a very important part to deliver the needed strength of these walls.

When Should Geogrid Be Used In Retaining Walls?

You should consult with a geotechnical engineer who is familiar with different site conditions that are present on your property. Although this might not be the best answer if you are going to Do It Yourself. We will give you some great advice to help you along the way.

Depending on where you live, your local administration will have all the regulations regarding retaining wall heights and the maximum height you are allowed to build without involving an engineer. In some places, like Calgary CA, a retaining wall over 1.2 m must be designed by an engineer.

If you don't know the regulations in your area, reach out to your local permitting office, or local geotechnical engineer. or a retaining wall contractor. Once you have contacted them, explained the project to them, and let them know what the maximum wall height will be, you might have to hire an engineer if the wall goes beyond the regulations, or you might have to change your plans.

If You Do Not Need An Engineer

If your wall is short enough that you do not need an engineer, you should use a rough calculation for the geogrid length of the wall. The geogrid length equation is 0.8 x Regaining Wall Height.If the wall is 5 feet tall, you need 4 foot-long geogrid layers. For small block walls, geogrid is usually installed every second block layer starting from the top of the bottom block.

Keep in mind, different types of blocks have different requirements and the recommendations may not be applicable to every situation or block type. Check with the block manufacturer's recommendations for geogrid lengths.

Retaining Wall Cross Diagram

Retaining Wall Geogrid Used in Layers of Wall

Finished Retaining Wall

Completed Retaining Wall

Drainage

Although this article is about geogrid, you should have some information regarding drainage.  Geogrid layers are going to interfere with your drainage blanket and installing the blanket can be difficult with geogrid.

If you don't know what a drainage blanket is, it's a 300 mm (one foot) thick layer of washed gravel completely wrapped in geotextile filter fabric that is installed directly behind the retaining wall blocks. The drainage blanket plays an important part in the performance of the wall. It will stop the build-up of excess water pressure on the wall which can cause issues including the chance of total failure.

How To Install Geogrid In The Retaining Wall

If you have properly completed the first steps of building a retaining wall including excavated organic materials under the wall alignment and have built a smooth, compacted gravel leveling pad, you are ready to start your first block layer.

Be sure your first layer of blocks is level and has been properly backfilled on the front side of the wall (200 mm or 8 inches is usually good for walls under 1.2 m), you can start the installation as follows:

Build the first section of the drainage blanket.

Place backfill behind the wall to the height of the first block and at least the length of the geogrid you will install. Again, Geogrid Length = 0.8 x Retaining Wall Height.

Once the backfill is properly compacted and the same height as the first block layer, place the geogrid on the first block layer.

The edge of the geogrid on the lower block should be placed as far forward as you can without sticking out of the face of the wall. You should not be able to see it once you have built the wall.

If you purchased a biaxial geogrid or two-way geogrid, you can roll it out along the length of the wall as long as the roll width is wide enough to satisfy the geogrid length equation.

Uniaxial Georgrid

If you purchased a uniaxial geogrid or one-way geogrid, you will have to cut it to the length you need then lay it so the thick or stiff strands in the geogrid are cross-wise to the wall going into the blocks.

After you have covered the entire first block layer with geogrid to the correct length, you can place the second block layer to secure the grid in place.

With the grid secured in place by the second row of blocks, carefully build your next drainage blanket completely wrapped in geotextile and add backfill on top of the grid. Make sure the grid stays tight.

Compact the backfill in place

Add the third row of blocks.

Place backfill and compact in place to the height of block row three.

Place geogrid on the third row of blocks the same way as 1, 2, and 3.

Continue until you have reached the wall's height and remember to compact every backfill layer, build your drainage blanket, and place geogrid on every second layer.

Geogrid Used for Strength

Geogrid used for Added Strength