Cylindrical water tanks are usually found on high-rise
buildings and they are filled with water. Due to the weight of the
water, collapses occur at the bottom of the tank. Depression (a) in the
tank bottom depends on the diameter of the tank (D), the density of
the water (c), the acceleration of gravity (g), the height of the
water in the tank (h), the thickness of the tank bottom (t) and the
modulus of the tank material (E). Using...