D1556 Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method

D2167 Standard Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method

D2216 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

D2937 Standard Test Method for Density of Soil in Place by the Drive-Cylinder Method

D3839 Standard Guide for Underground Installation of “Fiberglass” (Glass-FiberReinforced Thermosetting-Resin) Pipe

D6565 Standard Test Method for Determination of Water (Moisture) Content of Soil by the Time-Domain Reflectometry (TDR) Method

D6642 Standard Guide for Comparison of Techniques to Quantify the Soil-Water (Moisture) Flux

D6758 Standard Test Method for Measuring Stiffness and Apparent Modulus of Soil and Soil-Aggregate In-Place by Electro-Mechanical Method

D6938 Standard Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)

D7698 Standard Test Method for In-Place Estimation of Density and Water Content of Soil and Aggregate by Correlation with Complex Impedance Method

F1668 Standard Guide for Construction Procedures for Buried Plastic Pipe