ASTM Standards C39 Test Method for Compressive Strength of Cylindrical Concrete Specimens D1556 Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method D4429 Test Method for CBR (California Bearing Ratio) of Soils in Place D6938 Test Methods for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth) U.S. Department of State - DS SD-STD-02.01 SAE Standard J211-1 J211-2 ISO Standard ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories Keywords Berms - Berms And Levees - Certification - Homeland Security - Mass - Penetration - Performance Test - Perimeter Security And Vehicle Barriers - Qualification And Certification - Security Barriers - Security Systems ICS Code ICS Number Code 93.080.30 (Road equipment and installations) UNSPSC Code UNSPSC Code 25172100(Vehicle safety and security systems and components)
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