GRI Specifications, Guides and Practices

 

GRI Specifications

GCL3 - Test Methods, Required Properties, and Testing Frequencies of Geosynthetic Clay Liners (GCLs)

         Complete Written Text

         Power Point Tutorial

GS15 - Test Methods, Test Properties and Testing Frequency for Geocells Made From High Density Polyethylene (HDPE) Strips

         Complete Written Text

         Power Point Tutorial

GT10 - Test Methods, Properties and Frequencies for High Strength Geotextile Tubes used as Coastal and Riverine Structures

         Complete Written Text

         Power Point Tutorial

GT12(a) - Test Methods and Properties for Nonwoven Geotextiles Used as Protection (or Cushioning) Materials (ASTM)

         Complete Written Text

         Power Point Tutorial

GT12(b) - Test Methods and Properties for Nonwoven Geotextiles Used as Protection (or Cushioning) Materials (ISO)

         Complete Written Text

         Power Point Tutorial

GT13(a) - Test Methods and Properties for Geotextiles Used as Separation Between Subgrade Soil and Aggregate (ASTM)

         Complete Written Text

         Power Point Tutorial

GT13(b) - Test Methods and Properties for Geotextiles Used as Separation Between Subgrade Soil and Aggregate (ISO)

         Complete Written Text

         Power Point Tutorial

GC14 - Test Methods, Required Properties and Testing Frequency for Polymeric Turf Reinforcement Mats

         Complete Written Text

         Power Point Tutorial

GM13 - Test Methods, Test Properties and Testing Frequency for High Density Polyethylene (HDPE) Smooth and Textured Geomembranes

         Complete Written Text

         Power Point Tutorial

 

GRI Specifications

GM17 - Test Methods, Test Properties and Testing Frequency for Linear Low Density Polyethylene (LLDPE) Smooth and Textured Geomembranes

         Complete Written Text

         Power Point Tutorial

GM18 - Test Methods, Test Properties and Testing Frequencies for Flexible Polypropylene (fPP and fPP-R) Nonreinforced and Reinforced Geomembranes

         Complete Written Text

         Power Point Tutorial

GM19 - Seam Strength and Related Properties of Thermally Bonded Polyolefin Geomembranes

         Complete Written Text

         Power Point Tutorial

GM21 - Test Methods, Properties, and Frequencies for Ethylene Propylene Diene Terpolymer (EPDM) Nonreinforced and Scrim Reinforced Geomembranes

         Complete Written Text

         Power Point Tutorial

GM22 - Test Methods, Required Properties and Testing Frequencies for Scrim Reinforced Polyethylene Barriers Used in Exposed Temporary Applications

         Complete Written Text

         Power Point Tutorial

GM25 - Test Methods, Test Properties and Testing Frequency for Reinforced Linear Low Density Polyethylene (LLDPE-R) Geomembranes

         Complete Written Text

         Power Point Tutorial

GM28 - Test Methods, Test Properties and Testing Frequencies for Reinforced Chlorosulfonated Polyethylene (CSPE-R) Geomembranes

         Complete Written Text

         Power Point Tutorial

GM30 - Test Methods, Test Properties and Testing Frequency for Coated Tape Polyethylene (cPE) Barriers

         Complete Written Text

         Power Point Tutorial

GC16 - Test Methods, Required Properties and Testing Frequency for Prefabricated Vertical Drains (PVDs)

         Complete Written Text

         Power Point Tutorial

 

GRI Guides

GC8 - Determination of the Allowable Flow Rate of a Drainage Geocomposite

         Complete Written Text

         Power Point Tutorial

GCL4 - Gripping of Reinforced GCLs to End Platens During Direct (Interface) Shear Testing

GCL 5 - Design Considerations for Geosynthetic Clay Liners (GCLs) in Various Applications

GM10 - The Stress Crack Resistance of HDPE Geomembrane Sheet (Procedure for NCTL Test)

GM14 - Selecting Variable Intervals for Taking Geomembrane Destructive Seam Samples Using the Method of Attributes

GM20 - Selecting Variable Intervals for Taking Geomembrane Destructive Seam Samples Using Control Charts

GN2 & GC13 - Joining and Attaching Geonets and Drainage Composites

GS3 - Selecting In-Situ Monitoring Methods and Devices for the Evaluation of Geosynthetic Performance

GS11 - Constructing Test Pads to Assess Protection Materials Intended to Avoid Geomembrane Puncture

GS12 - Lifetime Prediction of Geosynthetics Using Time-Temperature-Superposition (TTS) and Arrhenius Modeling

GS16 - Geosynthetic Sampling for Subsequent Laboratory Conformance Testing

 

GRI Practices

GG4(a) - Determination of the Long-Term Design Strength of Stiff Geogrids

GG4(b) - Determination of the Long-Term Design Strength of Flexible Geogrids

GM9 - Cold Weather Seaming of Geomembranes

GT7 - Determination of the Long-Term Design Strength of Geotextiles

GT11 - Installation of Geotextile Tubes used for Coastal and Riverine Structures

GM29 - Field Integrity Evaluation of Geomembrane Seams (and Sheet) Using Destructive and/or Nondestructive Testing