Editing Cone penetration test (section)

== Standards and use ==
CPT for geotechnical applications was standardized in 1986 by [[ASTM International|ASTM]] Standard D 3441 (ASTM, 2004). ISSMGE provides international standards on CPT and CPTU. Later ASTM Standards have addressed the use of CPT for various [[Natural environment|environment]]al site characterization and [[groundwater]] monitoring activities.<ref>ASTM 6001</ref><ref>ASTM 6067</ref><ref>Strutynsky, A.I., T. Sainey, 1990. Use of the Piezometric Cone Penetration Test and Penetrometer Groundwater Sampling for Volatile Organic Contaminant Plume Detection. Petroleum Hydrocarbons and Organic Chemicals in Groundwater: Prevention, Detection and Restoration. API/NWWA</ref> For geotechnical soil investigations, CPT is more popular compared to SPT as a method of geotechnical soil investigation. Its increased accuracy, speed of deployment, more continuous soil profile and reduced cost over other soil testing methods. The ability to advance additional in situ testing tools using the CPT direct push [[drilling rig]], including the seismic tools described above, are accelerating this process.