The experimental investigation for determining the stress-strain relationship is usually carried out with the Triaxial Compression test. During the test, the soil samples gradually stressed upto failure. Triaxial tests are performed to stimulate different types of stress and drainage conditions that can occur in the sub-soil for simulating the effect of building construction, excavation, tunneling etc. The Three different triaxial tests are usually performed for total and effective stress measurement.

The bench top Load frame comprises a rigid twin column constuction with an integral, fully variable microprocessor controlled drive unit, housed in a robustly constructed steel case. Much attention has been given to the prevention of ingress of water or grit. This load frame is primarily designed to conduct Triaxial testing of soil specimens upto 100mm diameter × 200mm long. Safety upward and downward travel limit switches are fitted as standard.

The Machine comes complete with latest HP Computer, enabling a user easy interface and some extra features like pause and speed reset during a test, RS232 for computer control, self diagnostics and many others. The stepper drive mechanism user a microprocessor to achieve a precision loading rate of 0.00001 to 9.99999 mm/ minute. Transducer signal conditional and display of transducer signal values via 31/2 digit 7 segment digital display.