Home Test Methods Rock Testing Back Pressure Cyclic Direct Shear Displacement Tests Rock Test Equipment Back Pressure Cyclic Direct Shear Displacement Tests Rock Test Equipment Enables a direct shear test in which the load is cycled back and forth to be performed on a specimen at dynamic rates with back pressure applied. The following rock test equipment can perform the Back Pressure Cyclic Direct Shear Displacement Tests rock test:- Unsaturated Back Pressured Shear Box for back pressure cyclic direct shear displacement tests rock test GDS Back Pressured Shear Box for back pressure cyclic direct shear displacement tests rock test Dynamic Back Pressure Shearbox for back pressure cyclic direct shear displacement tests rock test Back Pressure Shearbox - High Pressure for back pressure cyclic direct shear displacement tests rock test Hydraulic Load Frames for Rock for back pressure cyclic direct shear displacement tests rock test 1000kN (1MN) / 2000kN (2MN) Static Compression Only Loadframe for back pressure cyclic direct shear displacement tests rock test