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r <br /> PREMISION <br /> r <br /> 12 Interpretation <br />' include cone bearing CPT measurements during cone penetrationg (q. <br /> sleeve) <br /> friction (fs), and dynamic pore water pressure (u). Because these <br /> measurements relate to specific soil properties they can be used to identify <br /> soil types <br />' interpretation of the collected parameters is represented in the color <br /> Soil type unterpre a p P <br /> tabulation in the following appendix This interpretation is based on <br />' correlations developed by Robertson et al, 1989. In this interpretation, <br /> friction ratio (R) (sleeve friction divided by cone bearing) and cone bearing <br /> are used in the attached chart to identify soil types <br /> A general observation of the measured parameters can also be used to <br /> identify soil types. The following table can be used as a guideline for basic <br /> soil type evaluations. <br /> Sand Clay <br /> Cone Bearing (qc) High Low <br /> Friction Ratio (f,/q,) Low High <br /> Pore water pressure (u) Low High <br /> r <br /> 1 <br /> r <br /> i <br /> i <br /> • <br /> ' 1400 South 50th Street ® Richmond, CA 94804 0 (510) 237-4575 • FAX (510) 237-4574 <br /> htt www recisionsam coin <br /> Nationunde Direct Push Servtces <br /> 1-800-671-4744 <br />