Static cone penetration test is internationally recognized as a standard field test to collect data about bearing capacity and frictional resistance of soil. The equipment meets the essential requirements of IS:4968 (Part - III) the probing part consists of a cone which has an apex angle of 600 and an overall base diameter of 35.7 mm equivalent to area of 10 cm2. The cone is connected with sounding rods which are protected by mantle tubes. The assembly of sounding rod and mantle tube is pushed into the soil, by means of a mechanical rack jack or by an engine driven hydraulic pumping unit and ram. Basically the test procedure consists of first pushing the cone alone, then the cone and the friction jacket and finally the whole assembly in sequence through specified depth and noting the resistance in the first two cases, limited to the designed capacity of the unit. The readings are taken for every 20 cm of penetration, and thus continuous data of end bearing and frictional resistance of soil is recorded. The results are correlated with bearing capacity and settlement of shallow foundation and piles. Static Cone Test is unsuitable for gravelly soils. The Static Cone resistance is correlated with the 'N' value as obtained from standard penetration test, thus increasing the utility of the test. 'HEICO' Static Cone Penetrometers, both hand operated and engine driven, conform to the essential requirements of IS : 4968 (Part III) - 1976.

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