Abstract: The cost of concrete is governed by the cost of material, plant and labour. The cost of cement is several times higher than the aggregate. Therefore, the objective is to produce the concrete mix as lean as possible and should be economical. That is why designed mixes are preferred to nominal mix. Generally in nominal mixes, cement in higher quantity is used than the designed mixes. Since in production of concrete, the cost of cement is governing factor, therefore, to minimize the cost of concrete, it is essential that concrete mixes must be designed.