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EGG Cone Penetration Testing Procedure (CPT) Gregg In Situ, Inc carries out all Cone Penetration Tests (CPT) using an integrated electronic cone system, Figure CPT The soundings were conducted using a 20 ton capacity cone with a tip area of 15 cm2 and a friction sleeve area of 225 cm2 The cone is designed with an equal end area friction sleeve and a - - tip end area ratio of 0 85 - - - - The cone takes measurements of cone bearing (q j, sleeve friction (fl) Geophone5 and dynamic pore water pressure (VS&Vp jC. (u2) at 5-cm intervals during penetration to provide a nearly Push rod continuous hydrogeologic log CPT connector data reduction and interpretation is performed in real time facilitating on- S011 Seal site decision making The above Electric cable for mentioned parameters are stored on signal transmission disk for further analysis and Water Seal reference All CPT soundings are performed in accordance with Friction load cell revised (2002) ASTM standards (D Frictin sleeve 5778-95) Inclinometer The cone also contains a porous OX filter element located directly behind Tip load cell the cone tip 02), Figure CPT It consists of porous plastic and is 5 0mm thick The filter element is Water Seal used to obtain dynamic pore pressure as the cone is advanced as Soil sea! well as Pore Pressure Dissipation Pore Pressure Tests (PPDT's) during appropriate 1p Transducer 02) pauses in penetration It should be Tip load Ce Filter noted that prior to penetration, the element is fully saturated with silicon Cone Tip (qc) oil under vacuum pressure to ensure accurate and fast dissipation Faure CPT When the soundings are complete, the test holes are grouted using a Gregg In Situ support rig The grouting procedure consists of pushing a hollow CPT rod with a "knock out" plug to the termination depth of the test hole Grout is then pumped under pressure as the tremae pipe is pulled from the hole Disruption or further contamination to the site is therefore minimized