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Calibration of Cone and Base Plate for. ASTM D1556. NEH 645 WS 8.8. In–Place Moisture-Density Determination: B–8.8–1. Sand-Cone Method ASTM D1556. This test method may be used to determine the in-place density and unit weight of soils using a sand cone apparatus. This test method is applicable for soils (See Figure 1 and Note 1). 3. Note 1: Other apparatus of similar proportions as in AASHTO T191 or ASTM D1556 will perform satisfactorily soDesignation: D 1556 – 07 Standard Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method1 This standard is issued under the fixed 1.1 This test method may be used to determine the in-place density and unit weight of soils using a sand cone apparatus. 1.2 This test method is applicable for FIELD DENSITY TEST. (SAND CONE METHOD). ASTM D1556- D1556M. Prepared by: Reviewed by: Approved by: PARTICLE SIZE OF SOILS