Question

Give reason why dams and flyovers have broad basis

Answer 1

The reason is that the pressure exerted by a liquid increases with its depth. Thus, as the depth increases, more and more pressure is exerted by water on the wall of the dam. A thicker wall is required to withstand greater pressure, therefore, the thickness of the dam increases towards the bottom.



As we go deeper in the water the force and pressure increases and if the dams will not be broader at the bottom then the dam will be destroy or crack due to heavy force and pressure. That's why the dams over rivers made broader at the bottom than at the top.