A soil sample 10 cm in diameter is placed in a tube 1 m long. A...

   

Transcribed Image Text:

A soil sample 10 cm in diameter is placed in a tube 1 m long. A constant supply of water is allowed to flow into one end of the soil at A, and the outflow at B is collected by a beaker (Figure E6.2). The average amount of water collected is 1cm³ for every 10 seconds. The tube is inclined as shown in Figure E6.2. Determine the (a) hydraulic gradient, (b) flow rate, (c) average velocity, (d) seepage velocity if e = 0.6, and (e) hydraulic conductivity. Strategy: In flow problems, you must define a datum position. So your first task is to define the datum position and then find the difference in total head between A and B. Use the head difference to calculate the hydraulic gradient and use Equations (6.7) to (6.9) to solve the problem. Equation (6.7): Vr = kr = kii 22 Equation (6.8): Us = = k₂i = Equation (6.9): q; = v₁A = Akji 1 m 1 m Datum A FIGURE E6.2 -1 m Soil B 0.8 m Table A soil sample 10 cm in diameter is placed in a tube 1 m long. A constant supply of water is allowed to flow into one end of the soil at A, and the outflow at B is collected by a beaker (Figure E6.2). The average amount of water collected is 1cm³ for every 10 seconds. The tube is inclined as shown in Figure E6.2. Determine the (a) hydraulic gradient, (b) flow rate, (c) average velocity, (d) seepage velocity if e = 0.6, and (e) hydraulic conductivity. Strategy: In flow problems, you must define a datum position. So your first task is to define the datum position and then find the difference in total head between A and B. Use the head difference to calculate the hydraulic gradient and use Equations (6.7) to (6.9) to solve the problem. Equation (6.7): Vr = kr = kii 22 Equation (6.8): Us = = k₂i = Equation (6.9): q; = v₁A = Akji 1 m 1 m Datum A FIGURE E6.2 -1 m Soil B 0.8 m Table

Answer rating: 100% (QA)

T Datum a The hydralic gradie... View the full answer