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Triangular Aperture

TerraGrid® TXG is manufactured from select grades of polypropylene through the extruding, punching, and stretching process. This process creates a monolithic grid with triangular apertures that has a high tensile modulus to provide high performance in soil stabilization and base reinforcement applications.

TerraGrid® integrally formed triangle geogrids are composed of high-quality polypropylene resin and carbon black with no inclusion of postconsumer recycled materials. The punched and drawn process produces the following interrelated characteristics:

All values provided are intended for rapid comparison purposes, only. Please refer to a specific product’s Product Data Sheet (PDS) and the disclaimers therein for a detailed listing of all characteristics, associated definitions and values needed for structure design, specification compliance review and product submittal purposes. Please Download PDS for all information transfer, printing and submittal purposes.

Triangular Aperture Specifications
PropertyTest MethodEnglishUnit (Metric Unit)TerraGrid® TXG-3STerraGrid® TXG-5TerraGrid® TXG-7TerraGrid® TXG-8
Rib Pitch2Measuredin (mm)1.3 (33)1.6 (40)1.6 (40)1.3 (33)
Node Thickness2Measuredin (mm)0.12 (3.0)0.13 (3.3)0.17 (4.3)0.12 (3.0)
Rib Thickness2 3Measuredin (mm)0.06 (1.5)0.06 (1.4)0.08 (2.0)0.06 (1.5)
Rib ShapeObserved ()Rectangular (Rectangular)Rectangular (Rectangular)Rectangular (Rectangular)Rectangular (Rectangular)
Aperture ShapeObserved ()Trianglular (Trianglular)Trianglular (Trianglular)Trianglular (Trianglular)Triangular (Triangular)
Junction Efficiency4Measured% (%)95 (95)95 (95)95 (95)95 (95)
Aperture Stability5Measuredkg-cm/deg (kg-cm/deg)4.0 (4.0)8.0 (8.0)10.0 (10.0)4.5 (4.5)
Radial Stiffness, 0.5% Stain6Measuredlbs/ft (kN/m)18,000 (263)27,000 (394)39,000 (569)20,000 (291)
Isotropic Stiffness Ratio7Measured ()0.8 (0.8)0.8 (0.8)0.8 (0.8)0.8 (0.8)
Resistance to Chemical Degradation2 7Measured% (%)100 (100)100 (100)100 (100)100 (100)
UV Degradation Resistance8Measured% (%)100 (100)100 (100)100 (100)100 (100)
Product Data SheetsDownload TerraGrid® TXG-3S Apples PDSDownload TerraGrid® TXG-5 Apples PDSDownload TerraGrid® TXG-7 Apples PDSDownload TerraGrid® TXG-8 Apples PDS
  1. Unless indicated otherwise, values shown are minimum average roll values determined in accordance with ASTM D4759; descriptions of test procedures are briefly described in the following notes.
  2. Nominal values
  3. Average at rib-junction
  4. Expressed as a comparison of ASTM D7737 strength to ASTM D6637 strength of the same sample.
  5. US Army COE, modified.
  6. Determined from tensile stiffness measured in any in-plane axis from testing in accordance with ASTM D6637, modified.
  7. The ratio between the minimum and maximum observed values of radial stiffness at 0.5% strain, measured on rib and midway between rib directions.
  8. Resistance to loss of load capacity or structural integrity when subjected to aggressive chemical environment per EPA 9090, 120 hours.
  9. Resistance to loss of load capacity or structural integrity when subjected to aggressive UV light environment per ASTM D4355, 500 hours.