Given: Sewer piping shall be concrete encased for 10`where a water main crosses with less than 10` of vertical clearance. Encasement must be equal to trench width for both width and depth. Trench width must be pipe ID +2`. 24″ I.D. VCP with 1-1/2″ thick wall pipe is used. The encasement must be 12″ thick beyond the pipe in a square configuration. How many CY of concrete is required?

Given: Sewer piping shall be concrete encased for 10`where a water main crosses with less than 10` of vertical clearance. Encasement must be equal to trench width for both width and depth. Trench width must be pipe ID +2`. 24″ I.D. VCP with 1-1/2″ thick wall pipe is used. The encasement must be 12″ thick beyond the pipe in a square configuration. How many CY of concrete is required?