The current formula of critical hydraulic gradient is not adapted to solve critical hydraulic gradient of cohesive soil. Assume that the seepage failure mode of the cohesive soil foundation was cylindrical or inverted circular truncated cone. based on the calculation formula of the critical hydraulic gradient of Terzaghi. the analytical formula of the critical hydraulic gradient consi... https://fitnessgravesyardes.shop/product-category/ent-board/