A concrete cooling water tank with dimensions 7 m by 12 m by 0.5 m deep, is filled to the brim with 85oC water (β = 3.7 x 10-4 oC-1). Assuming the tank size remains constant, how far will the level drop by the time the water has been cooled to 25oC?

A sand has Gs = 2.66. Calculate the hydraulic gradient that will cause boiling for e = 0.35, 0.45, 0.55, 0.7, and 0.8.

For Problems 11.11, 11.12, and 11.13, calculate the U-factors.

Refer to Figure 7.24. The following data were collected during the field permeability measurement of a confined aquifer using a pumping test. Determine the hydraulic conductivity of the permeable layer. Use Eq. (7.49). Thickness of the aquifer, H = 4.5 m Piezometric level and radial distance of the first observation well: h1 = 2.9 m; r1 = 17.8 m Piezometric level and radial distance of the second observation well: h2 = 1.8 m; r2 = 8.1 m Rate of discharge from pumping, q = 0.5 m3/min