consultancy services for soil investigation consultancy services for soil investigation for provn of defi otm accn for fd regt at madukkarai under ge wellington , boring of 03 nos of bore holes through all kind of soil up to a depth of 10 mtrs and boring of 01 bore hole of 6 . 0m depth for building below ground level for up to strain value > 50 , collecting samples and conducting necessary field tests as per following parameters:- ( i ) depth of bore holes may be taken minimum 10mtrs or n value reaches 50 , which ever is earlier . ( ii ) spt value at every 0 . 75m intervals and change of strata ( iii ) grain size distribution and analysis ( iv ) soil characteristics ( v ) value of cohesion and angle of internal friction ( vi ) recommended sbc at different depths of foundation ie . , 1500mm , 2000mm , 2500mm ( vii ) sbc and its calculation based on n value shear strength and settlement criteria should be worked out for following size of footing 1 . 5x1 . 5 , 1 . 5x2 . 5 , 2x2 . 5 & 2x3m ( viii ) depth of water table ( maximum and minimum ) ( ix ) depth of expansive soil and its properties , if any ( x ) recommendations for type of foundation ( xi ) recommendation as regards possibility of liquefaction of soil in case of saturated or partially saturated or un compacted sandy soil ( xii ) recommendation for filling under floors and filling under protection including plinth protection ( xiii ) chemical analysis of soil ( xiv ) any other recommendationsnote:- ( i ) soil investigation and the report shall be as per nbc , is 1892 , 2131 , 2132 , 1888 , 2720 , 1904 , 6403 , 8009 , 1498 , 4968 & sp 36 in general . ( ii ) soil investigation report shall be got vetted from iits/nits/any other reputed government engineering college ( iii ) soil investigation report shall comprise recommendations on type of foundation , depth of foundation , design safe bearing capacity of soil and type of cement to be used for foundation