The Density Drive Sampler is used to determine the in-place density of soil by driving a thin-walled tube to obtain a soil sample of known volume.

The Sampler consists of a zinc plated steel drive head and sliding 10 lb hammer. The drive head is provided with a shock spring. Drive tubes are zinc plated.

Drive Tubes are available in three sizes:

	2 in x 6.25 in (0.01 ft3)
	3 in x 2.75 in (0.01 ft3)
	4 in x 5 in (0.033 ft3)

Applicable Standards: ASTM D 2937, AASHTO T 204

Note: Because of the difficulty sometimes encountered with sample removal from the tube, swaged end tubes are not recommended in stiff soils.

S-103	Density Drive Sampler w/3 in Head 22.0 lb
S-104	Density Drive Sampler w/4 in Head 23.0 lb