(Solved): A clay soil has a normally consolidated undrained strength ratio of USRNC=0.25. At a given d ...

A clay soil has a normally consolidated undrained strength ratio of $$U_{S{R}_{NC}}=0.25$$. At a given depth, the current vertical stress is 1000 and the preconsolidation stress is 3000 . Assume $$m=0.8$$. What is the appropriate undrained strength ratio for the overconsolidated condition? USROC = ?? Round to two decimal places.