Geotextile Installation

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How to Install Geotextiles

Geotextile Installation can be an easy process when you have the proper tools and installation procedure. Below you will find a general guide to installation any of our geotextile fabrics. Please feel free to contact us with any additional questions or site-specific requirements for your location.

geotextile installation, how to install geotextiles

Geotextile Installation Procedure:

Step 1: Prepare the install area. This will typically involve a process of removing trees and brush from the top layer of soil and vegetation from the subgrade materials. Weak pockets of soil should be replaced with granular fill.

Step 2: Smooth and level the subgrade. All depression or humps within the subgrade should be removed.

Step 3: Place the geotextile in the prepared installation area. Fabric should be laid out according to engineered plans or site recommendations. Fabric should be stretched as tight and as flat as possible.

Step 4: Overlap adjacent rolls as specified for your site. If no instructions exist, fabric should be overlapped at a minimum or 12-18 inches.

Sewing or Overlapping-When installing a geotextile, adjacent fabric can either be sewn or overlapped. The following is from the AASHTO and is set as general guidelines for determining when to sew and when to overlap

Soil CBR> 3 -Minimum overlap of 0.3 to 0.45 m

Soil CBR 1-3 -Minimum overlap of 0.6-1

Soil CBR< 0.5 - Must be sewn

 

Securing Geotextiles and Fill Placement

Step 5: Secure the fabric with staples, pins, soil or other suitable materials. Fabric should be secured along the edges and then at overlapping portions.

Step 6: Loosely place fill directly on the geotextile in 8" to 12" lifts. For very weak subgrades, 18" or thicker may be required.

 

Notes on Sewing for Geotextile Installation:

Handheld Sewing Machine that meets Federal Stitch Type 401 (Sample Models: Single Thread, Chain Stitch, Union Special, American Newlong) We recommend using an electric motor for standard use and an air-operated motor for hazardous conditions.

Thread (Depending on application, proper thread choice can be determined by supplier.)

Light Weight Fabric: 4 yards of thread for each yard sewn

Medium Weight Fabric: 6 yards of thread for each yard sewn

Heavy Weight Fabric: 9 yards of thread for each yard sewn

Thread Usage Formula (for each row of sewing): 4 + (2x (thickness of seam) x (1/length of 1 stitch)) = inches of thread use per inch sewn

Learn more about our Geotextiles

 

Woven Geotextiles

Non Woven Geotextiles

 

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Toll Free: 888.703.9889 | Int: (+1) 772.646.0597 | Fax: (+1) 772.589.3343

 

 

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