The specimen is placed in the Casagrande box that consist of two half-boxes. The test is carried out on at least three specimens of the same soil, consolidated at three different pressure values. At the end of the consolidation we go on with the cutting phase, under drained conditions, recording the resulting effort. Three different values of shear strength are obtained, proportional to the three different consolidation pressures applied. The values obtained are used to estimate the break envelope in the σn-τ diagram.The values of the friction angle φ' and the cohesion C' are evaluated from the test, which are used for the dimensioning of the foundation.
Our soil laboratory software “CiviLab” facilitates the processing of the Direct shear test and reduces the time required, also CiviLab provides high quality reports and archives them properly
CiviLab is a civil engineering laboratory software (Soil and concrete). Our laboratory software allows you to perform the tests with your preferred language and provides you a multilingual reports. Designed by civil engineers to meet your expectations. Easiness of usage, allowing members of your laboratory to master CiviLab in record time.
Our soil and concrete laboratory software supports the following languages
CiviLab supports the following unit systems: