Robertson's Remarks Archives – Peter K. Robertson Thu, 20 Sep 2018 14:17:43 +0000 en-US hourly 1 How accurate is the CPT? https://cpt-robertson.com/how-accurate-is-the-cpt/ https://cpt-robertson.com/how-accurate-is-the-cpt/#respond Thu, 01 Dec 2011 18:53:44 +0000 http://cpt-robertson.test/?p=146 Occasionally I am asked “How accurate is the CPT?” In short – generally it’s more accurate than most other in-situ and laboratory tests for a […]

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]]> https://cpt-robertson.com/how-accurate-is-the-cpt/feed/ 0 Estimating Soil Permeability from CPT https://cpt-robertson.com/estimating-soil-permeability-from-cpt/ https://cpt-robertson.com/estimating-soil-permeability-from-cpt/#respond Fri, 01 May 2009 10:17:06 +0000 http://cpt-robertson.test/?p=479 Lunne et al (1997) suggested an approximate method to estimate soil permeability (hydraulic conductivity) from the CPT via the Soil Behavior Type (SBT) chart using […]

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]]> https://cpt-robertson.com/estimating-soil-permeability-from-cpt/feed/ 0 Shear Wave Velocity, Vs, from CPT https://cpt-robertson.com/shear-wave-velocity-vs-from-cpt/ https://cpt-robertson.com/shear-wave-velocity-vs-from-cpt/#respond Thu, 01 Jan 2009 10:18:35 +0000 http://cpt-robertson.test/?p=482 The shear wave velocity (Vs) is a very useful parameter since it links directly to the small strain shear stiffness of the soil (G0). Although […]

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]]> https://cpt-robertson.com/shear-wave-velocity-vs-from-cpt/feed/ 0 Settlement calculations using CPT data https://cpt-robertson.com/settlement-calculations-using-cpt-data/ https://cpt-robertson.com/settlement-calculations-using-cpt-data/#respond Mon, 01 Sep 2008 10:23:19 +0000 http://cpt-robertson.test/?p=487 Traditionally the CPT has not been used extensively for the calculation of vertical settlements due to foundations loads. Partly this has been due to the […]

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]]> https://cpt-robertson.com/settlement-calculations-using-cpt-data/feed/ 0 Evaluation of Cyclic Softening in Clays https://cpt-robertson.com/evaluation-of-cyclic-softening-in-clays/ https://cpt-robertson.com/evaluation-of-cyclic-softening-in-clays/#respond Thu, 01 May 2008 10:46:43 +0000 http://cpt-robertson.test/?p=493 Boulanger and Idriss (2007, ASCE) recently presented an excellent summary for the evaluation of the cyclic softening in silts and clays. They correctly suggest that […]

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]]> https://cpt-robertson.com/evaluation-of-cyclic-softening-in-clays/feed/ 0 Transition Zones in CPT Data https://cpt-robertson.com/transition-zones-in-cpt-data/ https://cpt-robertson.com/transition-zones-in-cpt-data/#respond Tue, 01 Jan 2008 10:47:54 +0000 http://cpt-robertson.test/?p=497 A challenge when using CPT data for liquefaction evaluation is that the CPT data are collected at very close intervals, typically ever 5cm (2 inches), […]

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]]> https://cpt-robertson.com/transition-zones-in-cpt-data/feed/ 0 Shearwave Velocity for Settlement Calculations https://cpt-robertson.com/shearwave-velocity-for-settlement-calculations/ https://cpt-robertson.com/shearwave-velocity-for-settlement-calculations/#respond Fri, 01 Jun 2007 10:55:29 +0000 http://cpt-robertson.test/?p=507 In this ‘Remarks’, I would like to discuss the application of shear wave velocity for settlement calculations. A major advantage of the seismic Cone Penetration […]

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]]> https://cpt-robertson.com/shearwave-velocity-for-settlement-calculations/feed/ 0 Myths of the CPT: Its too expensive https://cpt-robertson.com/myths-of-the-cpt-its-too-expensive/ https://cpt-robertson.com/myths-of-the-cpt-its-too-expensive/#respond Tue, 01 Aug 2006 11:00:30 +0000 http://cpt-robertson.test/?p=512 Welcome to Robertson’s Remarks! The previous ‘Robertson’s Remarks’ covered a pet peeve of mine, that engineers/geologist often state: “The disadvantage of the CPT is that […]

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]]> https://cpt-robertson.com/myths-of-the-cpt-its-too-expensive/feed/ 0 Myths of the CPT: It doesn’t collect soil samples https://cpt-robertson.com/myths-of-the-cpt-it-doesnt-collect-soil-samples/ https://cpt-robertson.com/myths-of-the-cpt-it-doesnt-collect-soil-samples/#respond Mon, 01 May 2006 11:12:46 +0000 http://cpt-robertson.test/?p=522 Welcome to Robertson’s Remarks! My name is Peter Robertson and many of you may know me as an academic/researcher (c/o University of British Columbia then […]

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