Land Use and Development
Rules & Regulations
Description of ASTM-D4914 2008
ASTM D4914 - 08
Standard Test Methods for Density and Unit Weight of Soil and Rock in Place by the Sand Replacement Method in a Test Pit
Active Standard ASTM D4914 | Developed by Subcommittee: D18.08
Book of Standards Volume: 04.08
Significance and Use
These test methods are used to determine the in-place density of compacted materials in construction of earth embankments, road fills, and structure backfill. For construction control, these test methods are often used as the bases for acceptance of material compacted to a specified density or to a percentage of a maximum unit weight determined by a standard laboratory test method (such as determined from Test Method D 698 or D 1557
These test methods can be used to determine the in-place density of natural soil deposits, aggregates, soil mixtures, or other similar material.
Note 1Notwithstanding the statements on precision and bias contained in this test method, the precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740
1.1 These test methods cover the determination of the in-place density and unit weight of soil and rock using a pouring device and calibrated sand to determine the volume of a test pit. The word rock'' in these test methods is used to imply that the material being tested will typically contain particles larger than 3 in. (75 mm).
1.2 These test methods are best suited for test pits with a volume from 0.03 to 0.17 m 3 (1 to 6 ft 3 ). In general, the materials tested would have a maximum particle size of 75 to 125 mm (3 to 5 in.).
1.2.1 These test methods may be used for larger sized excavations if desirable. However, for larger sized excavations, Test Method D 5030
1.2.2 Test Method D 1556 or D 2167
1.3 Two test methods are provided as follows:
1.3.1 Test Method A In-Place Density and Unit Weight of Total Material (Section 9).
1.3.2 Test Method B In-Place Density and Unit Weight of Control Fraction (Section 10).
1.4 Selection of Test Methods :
1.4.1 Test Method A is used when the in-place unit weight of total material is to be determined. Test Method A can also be used to determine percent compaction or percent relative density when the maximum particle size present in the in-place material being tested does not exceed the maximum particle size allowed in the laboratory compaction test (refer to Test Methods D 698, D 1557, D 4253, and D 4254
1.4.2 Test Method B is used when percent compaction or percent relative density is to be determined and the in-place material contains particles larger than the maximum particle size allowed in the laboratory compaction test or when Practice D 4718
22.214.171.124 Because of possible lower densities created when there is particle interference (see Practice D 4718
1.4.3 Normally, the control fraction is the minus No. 4 sieve size material for cohesive or nonfree draining materials and the minus 3-in. sieve size material for cohesionless, free-draining materials. While other sizes are used for the control fraction ( 3 / 8,
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