# PROB5-08 - 2 and 4 are 90-cm long What is the direction of...

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SOIL SCIENCE 322 Problem Set #5 March 4, 2008 Due March 11, 2008 s 1. From the data below that we collected in class calculated the hydraulic conductivity (K ) for each time readings, and plot and explain your results. Recall that the soil was a Sparta sand. Summed time (s) Head (cm) 0 .0 8 4 1. 1.2 80 2 .2 7 5 3. 5.5 70 4. 7.3 65 5. 10.7 60 6. 12.5 55 7. 16.5 50 8. 19.7 45 9. 22.13 40 10. 26 35 11. 31.5 30 12. 36 25 13. 41 20 14. 47 15 15. 55 10 16. 64 5 The soil cylinder is 3 inches high and has a diameter of 3 inches. The water stand-pipe is 1.25 inches in diameter. You need to add 13.6 cm to each of the head readings to account for the difference between the placement of the ruler and the top of the soil surface. Plot K(t), H(t), and ln(H(t) and explain your results .
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Unformatted text preview: 2 and 4 are 90-cm long. What is the direction of water flow (vertical gradient) between piezometers 1 & 2 and 3 & 4? If a well is located triangular with respect (i.e. the well is projected out from the paper forming a triangle with the piezometers and you are to assume that the soil surface is flat, i.e., all at the same elevation) to these two batteries of piezometers and the depth to water at the well is 45 cm â€“approximately in what direction is the groundwater flowing (this could be done with a diagram)? Again assume this is representative of the area for the hydraulic conductivity you measured in class and calculated in problem 1. With this assumption what is the flux (q) of water flowing between piezometer 3 and 4?...
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