Abstract
While determining the bulk density of a clay specimen, there are possibilities that the bulk densities of different specimens differ from each other depending on the method of specimen preparation. One of the reasons for this is degree of perfection during the preparation of specimen. In this paper, the authors try to examine the difference due to errors in measurement and then study the influence of the method of preparation. The major findings are: 1) Although the effective value of bulk density is up to three decimal points, the dimensional measurements are made with a vernier caliper of minimum reading up to only 0.005cm and 2) The shape and size of a specimen prepared by trimming method are more or less similar to those of a specimen prepared by tube method.