geotechnical investigation work geotechnical investigation work for preparation of dpr for extension of mumbai metro line-5 from rajiv gandhi chowk to temghar and durgadi chowk to ulhasnagar , field investigation , drilling of bore hole in all types of strata . , a ) g . l . to 10 m , b ) 10 to 20 m , c ) more than 20 m , drilling in rock required cutting by diamond bits / cutters , a ) in weathered rock , b ) in hard rock , carry out spt tests , collecting disturbed samples , collecting undisturbed samples , conducting permeability test , a ) in over burden using falling head , b ) in rock with packers , collecting water samples , laboratotory test , soil samples , sieve analysis , hydrometer analysis , specific gravity , moisture content , dry density , atterberg limits , direct shear tests . , traixial shear test , chemical analysis , a ) soil , b ) water , rock samples , density tests , water absorption and porosity , determination of hardness , unconfined compression tests , carry out point load index , modulus of elasticity , abrasion testing , report , provide final report 1 set ( 7 copies )