5. Remove the drill rod by pulling straight up and twisting the
extraction tool. Do not loosen the drill rod by tapping
from side to side with a hammer. This will distort the hole
or cause loose material to fall into the hole.
6. Ensure accurate placement of the gauge. Before removing
the scraper plate, mark the test area using the drill rod as
shown in Figure 6. Mark lines in the dirt along two
perpendicular sides of the scraper plate.
Figure 6. Marking the Test Area
7. Carefully pick up the scraper plate. Be careful not to disturb
the soil around the hole.
8. Position the Gauge on the prepared area inside the
markings.
9. To ensure correct positioning of the Gauge, lower the
source rod into the prepared hole. Use care when
inserting the source rod; do not to disturb the soil
around the hole.
10.
Raise the source rod back to the SAFE position.
11. You are now ready to perform your measurement
NOTE:
Perform the standard count at least once a day.
The best practice is to pe
rform the standard count at the
jobsite on the first test site of the day
.
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