12
OPERATION
Figure 8 Level soil with top of sample ring
11. Place the sample ring with both covers in the transport box.
This protects the sample from vibrations and high temperature changes. Vibrations and
microbiological processes due to high temperatures may change the soil structure.
12. Take the samples out of the transport boxes and store them in the refrigerator in the lab.
2.4.2 DISTURBED SOIL SAMPLE
The second option uses disturbed soil material that is pressed manually into the sample ring
until full.
NOTE: If a specific dry density is requested, the amount of native soil material that has to be filled in the sample
ring has to be calculated (i.e., more than the quantity that the sample ring holds needs to be collected in order to
completely fill the sample ring, even when packing the soil into the sample ring).
The tools needed to collect a disturbed soil sample are listed below:
• duct tape
• METER soil sample ring
• HYPROP Balance
• fork
• knife
The following steps describe how to collect a disturbed soil sample.
1. Place a piece of duct tape over the drilling holes in the sample ring.
2. If requested, calculate the mass of material that has to be filled in the sample ring by
using the desired dry density as well as the water content.
3. Weigh the amount of material that has to be filled into the sample ring.
4. Fill the sample ring with material in small steps to prevent air gaps.
Use a fork or something similar to rough up the material to ensure a homogenous
passage between the filled in layers.
5. Be sure that the soil sample ring is filled completely and the surface is level.
If required, cut overlapping material with a knife.
