A mechanical device was designed and fabricated for in situ measurement of soil strength parameters such as soil cohesion, soil adhesion, angle of soil internal friction, soil to metal friction angle, soil penetration resistance and soil bulk density. The equipment was tested on the field at soil depth interval of 10 cm ranging from the soil surface to the depth of 30 cm following the standard procedures for the measurement of these soil strength parameters at soil moisture contents of 16.71% and 20.15%. At soil moisture content of 16.71% dry basis, soil cohesion and soil adhesion were 5.313 and 6.968 kN/m2 and 3.745 and 4.234 kN/m2 at the soil surface and at soil depth of 30 cm respectively. At soil moisture content of 20.15%, soil cohesion and soil... |