Approximate the settlement expected after a 25-year period from the effects of secondary compression in a clay layer 10 ft thick where the primary compression settlement is calculated to be 2 in. and...

Approximate the settlement expected after a 25-year period from the effects of secondary compression in a clay layer 10 ft thick where the primary compression settlement is calculated to be 2 in. and will require a period of about 12 years for completion. The compression index for the clay is 0.28, and e₀
is 1.15. (Refer to Equation 15.)