(38 mm), or when test hole volumes larger than ft3 ( cm 3) are required, Test Method D or D are applicable. It is common practice in the. This standard is issued under the fixed designation D ; the number . 1 These test methods are under the jurisdiction of ASTM Committee D on. Soil and. Standard Test Methods for Density and Unit Weight of Soil and Rock in Place by the Sand Replacement Method in a test Pit.
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Historical Version s – view previous versions of standard.
ASTM D Standard
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 Dsubject to the limitations discussed in 1. The quality of the result produced by this standard asgm 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 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. Reliable testing depends on many factors; Practice D provides astn means of evaluating some of those factors.
In general, the materials tested would have a maximum particle size of 75 to mm [3 to 5 in. While the equipment illustrated in these test methods is used for volumes less than 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 DDDDand D For Test Methods D and D only, the dry density 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, aatm portions.
The material from the in-place dry density test is physically divided into a control fraction sstm an oversize fraction based on a designated sieve size see Section 3. The dry density of the control fraction is calculated and compared with the dry density 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 stated in each system may not be exact equivalents; therefore each system shall be used independently of the other. Combining values from the two systems may asfm in non-conformance with the standard.
In addition they are representative of the significant digits that generally should be retained. It is beyond the scope of this standard zstm consider significant digits used awtm analytical methods for engineering design. 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 8 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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