2. The soil borrow material to be used to construct a highway embankment has a mass unit weight of 110.0 pcf, a water content of 6%, and the specific gravity of the soil solids is 2.63. The contract specifications require that the soil be compacted to a dry unit weight of 122 pcf and the water content be held to 5.5%. a. How many cubic yards of borrow are required to construct an embankment having a 245,000-cy net section volume

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa. s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)