. Bore-holes, field tests and laboratory tests

The properties of the underlying soil are determined by field and laboratory tests of the soil samples obtained from the bore holes drilled to a depth as mentioned in the above section and/or the Bill of Quantities. As far as possible, the locations of the boreholes shall be under foundation. Generally the following tests are conducted for determination of soil properties:

SN	Type of test	Frequency
1	Undisturbed Soil Sampling	at least 4 at each borehole
2	Standard Penetration Test	as required but the interval not less than
		1.5 m
3	Grain size analysis	at least 4 at each borehole
4	Hydrometer analysis	at least 4 at each borehole
5	Moisture content	at least 4 at each borehole
6	Bulk and dry density	at least 4 at each borehole
7	Unconfined compression test	at least 4 at each borehole
8	Consolidation test	at least 4 at each borehole
9	Direct shear test	at least 4 at each borehole

If required by the field condition, the Consultant shall conduct other types of tests. Similarly the frequency of the above tests can be increased if required. The cost of all the field and laboratory tests shall be incorporated in the cost of soil investigation works. No separate payment shall be made for the tests.

3.3.5. Soil exploration works to be certified:

The DHM, if required, may ask the Consultant to submit the soil/rock samples obtained from the drilling works in core boxes and/or a bore-log certified by the consultants