Question: SPT test was performed in a 200 mm diameter boring at a depth of 3.5 m below the ground surface. The driller used a

SPT test was performed in a 200 mm diameter boring at a depth of 3.5 m below the ground surface. The driller used a Venezuela-style donut-shaped Cathead hammer and a standard SPT sampler. The actual blow count (N) was 25. The soil is a clayey sand that has OCR of 2, a dry unit weight of 16 kN/m and a saturated unit weight of 17.5 kN/m. D50 of the soil is 0.2 mm. The groundwater table is at a depth of 2m. Take unit weight of water as 9.8 kN/m. Take age of the soil (t) as 800 years. Calculate: (1pts) N60 (N)60 D. (relative density) Consistency (denseness) (internal friction angle)

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