This test method describes the procedure for determining the in-place density and moisture of
earthwork through the use of a nuclear gauge. The density of the material shall be determined by
direct transmission and the moisture content shall be determined by backscatter. This method may
be used in conjunction with either the Standard or Modified Proctor Density Test for determining
the percent of Maximum Density.
The details included in this test method are for use with the Standard Proctor Test.
2. SUMMARY OF METHOD
The test consists of the following steps which are explained in the test procedure:
- Determining the Wet Density
- Determining the Moisture Content
- Calculating the Dry Density
- Determining the Maximum Density
- Calculating the percent of Maximum Density
3. LICENSING AND CERTIFICATION
3.1 Licensing
New York State requires that the owner of a nuclear gauge be licensed by the State Health
Department. The license requires that the operator of the device be certified and that the
device be maintained and stored in a safe manner.
3.2 Certification
Operator's certification is acquired by successfully completing training in the theory and use
of a nuclear gauge. This training and certification is usually conducted by the manufacturer
under the auspices of the State Health Department.