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EGG Cone Penetration Testing Procedure <br /> (CPT) <br />' Gregg In Situ, Inc carnes out all Cone Penetration Tests (CPT) using an <br /> integrated electronic cone system, Figure CPT The soundings were conducted <br />' using a 20 ton capacity cone with a tip area of 15 cm2 and a friction sleeve area <br /> of 225 cm2 The cone is designed with an equal end area friction sleeve and a <br /> tip end area ratio of 0 85 <br />' The cone takes measurements of <br />' <br /> cone bearing (q,), sleeve friction (f) �Geophones <br /> and dynamic pore water pressure (VS&YP) C. <br /> (u2) at 5-cm intervals during Push rod <br /> t penetration to provide a nearly connector <br /> continuous hydrogeologic log CPT <br /> data reduction and interpretation is , Soil seal <br />' performed in real time facilitating on- <br /> Electric cable for <br /> site decision making The above >, <br /> mentioned parameters are stored on signal transmission <br /> disk for further analysis and t <br /> reference All CPT soundings are Water Seal <br /> performed in accordance with Friction load cell <br /> revised (2002) ASTM standards (D Frictin sleeve , <br /> 5778-95) Inclinometer <br />' r' \"x"li`�J <br /> The cone also contains a porous Ti load cel{ <br /> (� <br /> filter element located directly behind P <br />' the cone tap (u2), Figure CPT It <br /> consists of porous plastic and is f <br /> 5 0mm thick The filter element is Water Seal <br />' used to obtain dynamic pore °` Soil seal <br /> pressure as the cone is advanced as l <br /> well as Pore Pressure Dissipation Pore Pressure <br /> Tests (PPDT's) during appropriate Tip load cell ` Transducer (u,) <br /> pauses in penetration it should be / Filter <br /> noted that prior to penetration, the <br /> element is fully saturated with silicon ��—Cone Tip (qc) <br /> oil under vacuum pressure to ensure <br />' accurate and fast dissipation Figure CPT <br /> When the soundings are complete, the test holes are grouted using a Gregg In <br />' Situ support rig The grouting procedure consists of pushing a hollow CPT rod <br /> with a knock out" plug to the termination depth of the test hole Grout is then <br />' pumped under pressure as the tremae pipe is pulled from the hole Disruption or <br /> further contamination to the site is therefore minimized <br />