Instructions

1. Weigh the provided empty tube
2. Fill the provided tube with sand, and way the whole apparatus
3. Attach the inflow tube to the tap and open the tap slowly until some water flows through the column
4. As soon at the flowrate has stabilized and all air has been flushed out, measure the discharge rate and the hydraulic head gradient
5. Repeat the experiment 2 more times with two different discharge rates
6. Determine the weight of the saturated column
7. Put the column in vertical position and let the water drain while you are working on the data analysis
8. Plot discharge rate vs. hydraulic head gradient
9. Weigh the column again at the end of the lab when the drainage stopped

 

Questions:

What is the hydraulic conductivity of the sand?

What is the porosity and specific yield of the sand?

Compare your results with literature values, do they make sense?