Home Test Methods Soil Testing Geo-membrane Shear Test Soil Test Equipment Geo-membrane Shear Test Soil Test Equipment Direct shear testing of a geo-synthetic material embedded in a soil specimen to determine the shear strength of the geo-synthetic-soil system. The following soil test equipment can perform the Geo-membrane Shear Test soil test:- Unsaturated Back Pressured Shear Box for geo-membrane shear test soil test GDS Large Automated Direct Shear System (300mm) for geo-membrane shear test soil test Dynamic Back Pressure Shearbox for geo-membrane shear test soil test Back Pressure Shearbox - High Pressure for geo-membrane shear test soil test GDS Back Pressured Shear Box for geo-membrane shear test soil test