Constant Head Permeameter Testing
This page will discuss the process behind the constant head permeameter testing and the obtained results:
The results are shown in the excel files below.
- Five trials were performed for each composition.
- The Fifth trial was removed due to faulty data collection.
- The geometric flow average was calculated for each sample. Using this data and the area of the bioretention site in question, the water retention time (days) for each of the 5 compositions was determined.
- This data resulted in water retention times under 3 days.
Saturated hydraulic conductivity was calculated for all five samples by manipulating. Darcy's Law
The constant head permeameter testing provided three constants necessary for calculating hydraulic conductivity from Darcy's law
- h - constant head (mm)
- A - area of cores (mm^2)
- L - length of the core (mm)
The graphic above displays the process behind determining hydraulic conductivity from the constant head permeameter device.
