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02/19/2983 10 54 843-832-4919 GREGG SUMMERVILLE PAGE 63 <br /> 18 <br /> Applicadorts Crtude-CPT <br /> Robertson et al (1992) presented a surnrnary References <br /> of available data to estimate the horizontal <br /> coej icient of permeability from dissipation Baligh, MM and Levadoux, JN 1986 <br /> tests_ This sunuriary is shown in Figure 7_ Consolidation after undrained piezocone <br /> ' Since the relationship is also a function of the penetration, 11 Interpretation, J of <br /> recompression ration (RR) there is a wide Geotech Engineering, ASCE, 112(7) 727- <br /> ' variation of+ or--Dile order of magnitude 745 <br /> Jaamiiolkowski, M, Ladd, C C , Germaine, <br /> 7amiolkowski et al (1985) suggested a range J T and Lancellotta, R 1985 New <br /> of possible values of kk*,.for soft clays developments in field and laboratory testing <br /> of soils, State-of-the-art report, Proceedings <br /> Table 6.Range of possible field values of k&lk.for of the 11`' International Conference on Soil <br /> soft clays(after 3awniolkowski et al.,1985) Mechanics and Foundation Engineering, <br /> San Francisco, 1,57-153,Balkema <br /> Nature of clay k✓k• Robertson, P K 1990 Soil classification <br /> using the cone penetration test Canadian <br /> No ritacrofabnc, or nuly slightly 1 to 15 Geotechnical Journal, 27 (1) 151-8 <br /> dcvcloped macrofabnc, essenually Robertson, P K , Sully, J P , Woeller, D J , <br /> ' homogeneous deposits Lunne T , Powell, J J M and Gillespie,Eerily well- to well-developed 2 to 4 y <br /> mactvfabnc,e g sedimentary clays D G 1992 Estimating coefficient of <br /> with disconunuous lenses and consolidation from piezocone tests, <br /> layers of more permeable material Canadian Geotechnical J , 29(4) 551-557 <br /> varved clays and other deposits 3 to 15 Robertson, P K , Campanella, R G., <br /> containing c nbedded and more or Gillespie, D and Greig, J 1986 Use of <br /> less continuous nneable layers p1ezometer cone data Proceedings of the <br /> ASCE Specialty Conference In Situ '86- <br /> Use of In Situ Tests in Geotechnical <br /> ! Engineering, Blacksburg, 1263-88 <br /> i <br /> r <br /> i <br /> r <br />' <br /> 1998 <br /> P Y_Robertson <br />