Active view current version of standard. Other Historical Standards. Work Item s - proposed revisions of this standard. More D In general, the materials tested would have a maximum particle size of 75 to mm 3 to 5 in.
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Active view current version of standard. Other Historical Standards. Work Item s - proposed revisions of this standard. More D The word "rock" in these test methods is used to imply that the material being tested will typically contain particles larger than 3 in. In general, the materials tested would have a maximum particle size of 3 to 5 in. However, for larger sized excavations, Test Method D is preferred. While the equipment illustrated in these test methods is used for volumes less than 1 ft 0.
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, D, D, and D For Test Methods D and D only, the unit weight determined in the laboratory compaction test may be corrected for larger particle sizes in accordance with, and subject to the limitations of Practice D Then the material is considered to consist of two fractions, or portions.
The material from the in-place unit weight test is physically divided into a control fraction and an oversize fraction based on a designated sieve size. The unit weight of the control fraction is calculated and compared with the unit weight s established by the laboratory compaction test s. The material being tested should have sufficient cohesion or particle interlocking to maintain stable sides during excavation of the test pit and through completion of this test.
It should also be firm enough not to deform or slough due to the minor pressures exerted in digging the hole and pouring the sand. The accuracy of the test methods may be affected for materials that deform easily or that may undergo volume change in the excavated hole from standing or walking near the hole during the test. The values given in parentheses are for information only. This implicitly combines two separate systems of units, that is, the absolute system and the gravimetric system.
It is scientifically undesirable to combine the use of two separate systems within a single standard. These test methods have been written using inch-pound units gravimetric system where the pound lbf represents a unit of force weight.
However, conversions are given in the SI system. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazards statements, see Sections 7 and A1.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More D 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 or D , subject to the limitations discussed in 1. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. Users of these test methods are cautioned that compliance with Practice D does not in itself ensure reliable results.
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