The aim of this project was to find out the strength of the soil samples with different height to diameter ratio. To compare the similar properties of different samples identical soil samples must be required. To reach up to this goal reconstituted samples were used to find the strength of them. Unconfined compression test were performed on the reconstituted soil specimen to investigate the variation of strength with the variation of specimen height to diameter ratio (H/D).The undrained shear strength of clays is commonly determined from an unconfined compression test which is necessary for the determination of the bearing capacity. It can be performed on both undisturbed and remolded specimen. In order to assure and predict the longibility and settlements of the structure due to load it is very important. H/D ratio of between 2 and 3 is generally recommended by accepted scientific and technical authorities. Nevertheless, published reports on the effect of specimen shape on soil strength are scarce. The value of test decreases significantly with increasing H/D ratio. It is less steep when the ratio is between 1.25 and 2.50. The soil samples used for this project are collected from four different locations in Dhaka. The test was performed on undisturbed soil specimen. In addition few more tests are done to know the index properties of soil. The range of variation of the ratios was 1.0 to 2.5 in this project. It was seen that the strength of soil samples was almost same for the range of ratio 1.75 to 2.5.