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EGG Cone Penetration Testing Procedure <br /> (CPT) <br /> Gregg In Situ, Inc. carries 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 /> cone bearing (qj, sleeve friction (fs) Geophones <br /> and dynamic pore water pressure L <br /> �VsLVD <br /> u -at�5=cro 'irtite-rval5 durin I <br /> penetration to provide a nearly Push rod <br /> continuous hydrogeologic log. CPT connector <br /> data reduction and interpretation is SOII seal <br /> performed in real time facilitating on- <br /> site decision making. The above Electric cable for <br /> mentioned parameters are stored on signal transmission <br /> disk for further analysis and Water Seal <br /> reference. All CPT soundings are <br /> performed in accordance with Friction load cell <br /> revised (2002) ASTM standards (D Frictin sleeve . <br /> 5778-95). Inclinometer <br /> The cone also contains a porous OxliJp <br /> filter element located directly behind Tip load cell <br /> the cone tip (u1), Figure CPT. It <br /> consists of porous plastic and is <br /> 5.Omm thick. The filter element is Water Seal <br /> used to obtain dynamic pore <br /> pressure as the cone is advanced as Soil seal <br /> well as Pore Pressure Dissipation Pore Pressure <br /> Tests (PPDT's) during appropriate „' Transducer (u,) <br /> Tip load cell <br /> pauses in penetration. It should be Fitter <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 tremie pipe is pulled from the hole. Disruption or <br /> further contamination to the site is therefore minimized. <br />