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EGG <br /> i Cone Penetration Testing Procedure <br /> (CPT) <br /> Gregg In Situ, Inc cames 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 faction sleeve area <br /> of 225 cm2 The cone is designed with an equal end area faction sleeve and a <br /> tip and area ratio of 0 85 <br /> The cone takes measurements of _ <br />' <br /> cone beanng (q.), sleeve friction O Geophones <br /> and dynamic pore water pressure (V$&VP) <br /> C. <br /> (u2) at 5-cm intervals during <br />' penetration to provide a nearly Push rod <br /> connector <br /> continuous hydrogeologic log CPT <br /> data reduction and interpretation is ' <br />' performed in real time facilitating on- 5011 Seal Electric cable for <br /> site decision making The above ',-i rr <br /> mentioned parameters are stored onsignal transmission <br /> Idisk for further analysis and Water Seal <br /> reference All CPT soundings are <br /> performed in accordance with f Fnction load cell <br /> 10 revised (2002) ASTM standards (D Frictin sleeve € ` <br /> 5778-95) Inclinometer <br /> The cone also contains a porous <br /> filter element located directly behind Trp load cell <br />' the cone tip (uz), Figure CPT It <br /> consists of porous plastic and is <br /> 5 0mm thick The filter element is ; <br /> f Water Seal <br /> used to obtain dynamic pore ' <br /> Soil seal <br /> pressure as the cone is advanced as <br /> well as Pore Pressure Dissipation Pore Pressure <br />' Tests (PPDT's) during appropriate Transducer (u$) <br /> pauses in penetration It should be Tip load cell Filter <br />' noted that prior to penetration, the <br /> element is fully saturated with silicon Cone Tip (q�) <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 outs plug to the termination depth ,of the test hole Grout is then <br />' pumped under pressure as the tremae pipe is pu#led from the hole Disruption or <br /> further contamination to the site is therefore minimized <br />