The paper presents an experimental and numerical study to determine the ultimate bearing capacity of unskirted, singly and doubly skirted hexagonal footings on sands S1 (D 10 = 0.14), S2 (D 10 = 0.45) and S3 (D 10 = 1.45). Laboratory plate load tests were conducted in this connection on the unskirted, singly and doubly skirted hexagonal footings on three sands placed in a test tank at a relative density of 30%. The length of the skirt ranged from 0.0B to 1.5B. The results show that the bearing capacity for the skirted hexagonal footings on sand S3 was higher, followed by sands S2 and S1. However, the results revealed that the numerically obtained bearing capacity was comparable with the one obtained experimentally for the hexagonal footings on three sands. In addition, the experimental findings confirmed numerical results obtained with an average deviation of 1%. Double-skirt provision provides marginal improvement in the bearing capacity compared to singly skirted footings. The pattern of failure produced supports observations of the bearing capacity of the unskirted, singly and doubly skirted hexagonal footings on three sands.

A study was carried out to find the different serotypes of E.coli isolates from the diarrhoeic calves in organized farms and in unorganized areas. One hundred and twenty nine isolates of E. coli were isolated from 250 diarrhoeic calves. All the isolates of E. coli were typed for 'O' antigen. Out of the one hundred and twenty nine isolates of E. coli serotyped, one hundred sixteen serotypes belonged to 22

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