Editing Cone penetration test (section)

== Additional in situ testing parameters ==
In addition to the mechanical and electronic cones, a variety of other CPT-deployed tools have been developed over the years to provide additional subsurface information. One common tool advanced during CPT testing is a [[geophone]] set to gather seismic [[shear wave]] and [[compression wave]] velocities. This data helps determine the [[shear modulus]] and [[Poisson's ratio]] at intervals through the soil column for [[soil liquefaction]] analysis and low-strain soil strength analysis. Engineers use the shear wave velocity and shear modulus to determine the soil's behavior under low-strain and vibratory loads. Additional tools such as [[laser-induced fluorescence]], [[X-ray fluorescence]],<ref>{{Cite web |title = Home |url = http://chemistry.nrl.navy.mil/6170/6175/researchareas.php |website = chemistry.nrl.navy.mil |access-date = 2015-04-20 |archive-date = 2007-08-21 |archive-url = https://web.archive.org/web/20070821194250/http://chemistry.nrl.navy.mil/6170/6175/researchareas.php |url-status = dead }}</ref> soil [[Electrical conductivity|conductivity]]/[[resistivity]],<ref>Strutynsky, A.I., R. Sandiford, D. Cavaliere, 1991.  Use of Piezometric Cone Penetration Testing with Electrical Conductivity Measurements (CPTU-EC) for Detection of Hydrocarbon Contamination in Saturated Granular Soils. Current Practices in Ground Water and Vadose Zone Investigations, ASTM</ref> [[pH]], temperature and membrane interface probe and cameras for capturing video imagery are also increasingly advanced in conjunction with the CPT probe.

An additional CPT deployed tool used in Britain, Netherlands, Germany, Belgium and France is a piezocone combined with a tri-axial [[magnetometer]]. This is used to attempt to ensure that tests, boreholes, and [[Deep foundation|piles]], do not encounter [[unexploded ordnance]] (UXO) or [[dud]]s. The magnetometer in the cone detects ferrous materials of 50&nbsp;kg or larger within a radius of up to about 2&nbsp;m distance from the probe depending on the material, orientation and soil conditions.