The early applications of CPT mainly determined the soil geotechnical property of bearing capacity. The original cone penetrometers involved simple mechanical measurements of the total penetration resistance to pushing a tool with a conical tip into the soil. Different methods were employed to separate the total measured resistance into components generated by the conical tip the "tip friction" and friction generated by the rod string. A friction sleeve was added to quantify this component of the friction and aid in determining soil cohesive strength in the s. The filter is usually located either on the cone tip the so-called U1 position , immediately behind the cone tip the most common U2 position or behind the friction sleeve U3 position.
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Page 27 Share Suggested Citation: Cone Penetrating Testing. Washington, DC: The National Academies Press. The data presentation from a CPT sounding should include the tip, sleeve, and porewater readings plotted with depth in side-by-side graphs, as illustrated by Figure For DOT projects wishing to share CPT information with con- tractors in bidding documents, perhaps these are the only graphical plots that should be presented, because they repre- sent the raw uninterpreted results. The total cone tip resistance qt is always preferred over the raw measured value qc.
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Balasubramaniam Received: This study provides lic conductivity in horizontal direction of Singapore support for the use of piezocone dissipation testing marine clay at Changi. Piezocone dissipation tests methods for the determination of the coefficient of were carried out prior to reclamation as well as after consolidation due to horizontal flow and hydraulic ground improvement with vertical drains to compare conductivity in horizontal direction of marine clays the changes in the coefficient of consolidation due to in the region as well as an alternative to piezometer horizontal flow and hydraulic conductivity in hori- instrumentation for monitoring of piezometric pres- zontal direction prior to and after ground improve- sure during consolidation. Nikraz of land is currently being reclaimed next to the Department of Civil Engineering, Curtin University of existing airport.