The following results were obtained from a liquid limit test on a clay using casagrande’s cup device: number of blows 6 12 20 28 32 water content (%) 52.5 47.1 43.2 38.6 37.0 (a) determine the liquid limit of this clay. (b) if the natural water content is 38% and the plastic limit is 23%, calculate the liquidity index and the consistency index. (c) describe the soil based on the consistency index. (d) do you expect a brittle type of failure for this soil? why?