Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/98333
Type: Conference paper
Title: CPT sounding and the scale of variability of Auckland residual soil
Author: Pender, M.
Jaksa, M.
Holland, A.
Citation: Proceedings of the 12th Australia New Zealand Conference on Geomechanics: The Changing Face of the Earth - Geomechanics & Human Influence, 2015 / Ramsay, G. (ed./s), pp.1-8
Publisher: New Zealand Geotechnical Society
Issue Date: 2015
Conference Name: 12th Australia New Zealand Conference on Geomechanics (ANZ 2015) (22 Feb 2015 - 25 Feb 2015 : Wellington, NZ)
Statement of
Responsibility: 
M. J. Pender, M. B. Jaksa and Andrew Holland
Abstract: The cone penetration test (CPT) provides a huge amount of data in comparison with other in situ test procedures - complete sets of readings every 10 mm or so of penetration. Some years ago a site in Albany was investigated with 30 closely spaced CPT soundings to a depth of 10 m. The intention of this paper is to take the analysis of the data gathered further in order to understand better the scale of the variability of the properties of the residual soil common around the Auckland region. We have data at two scales: vertical and horizontal. In the vertical direction, there are one thousand readings over the 10 m depth of each sounding. In the horizontal direction, there are 30 CPT soundings within a square of 8 m side, the closest being at 1 m spacing. We will present our explorations of the properties in terms of an autocorrelation function and by determining the average distance between zero crossings of the de-trended qc data.
Keywords: Residual soil; variability; scale of variability; CPT
Rights: Copyright status unknown
RMID: 0030043908
Appears in Collections:Civil and Environmental Engineering publications

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