CLiq v.2.0 – CPT liquefaction software

The most recommended tool to evaluate soil liquefaction

“CLiq is an excellent program to perform CPT case history-based liquefaction analyses that is easy to use and provides the user with colourful plots and detailed output. The program has the ability to automatically identify and remove transition zones in interlayered deposits for improved analyses. The user can modify a range of key variables to assist in the application of engineering judgment. CLiq is excellent value for money and is highly recommended for anyone that wants to perform liquefaction analyses using the CPT “

– Dr. Peter Robertson, Gregg Drilling and Testing, Inc.

GeoLogismiki, in collaboration with Gregg Drilling Inc. and Prof. Peter Robertson, is pleased to announce the availability of our new Cone Penetration Test based soil liquefaction software, CLiq.

CPT liquefaction software CLiq is more advanced than the CPT section of the current LiqIT software and provides users an easy to use graphical environment specifically tailored for Cone Penetration Test data (CPT and CPTU). Our new soil liquefaction software addresses advanced issues such as cyclic softening in clay-like soils and thin layer/layer transition zone detection. CLiq provides results and plots for each calculation step, starting with the basic CPT data interpretation through to final plots of factor of safety, liquefaction potential index and post-earthquake displacements, both vertical settlement and lateral displacements. CLiq provides consistent output results by applying the state-of-the-art NCEER method (Youd et al, 2001) along with the calibrated procedures for post-earthquake displacements by Zhang et al (2002 & 2004). It also includes the latest assessment procedure developed by Robertson (2009) which is applicable to all soil type combining a check for cyclic liquefaction (sands) and cyclic softening (clays)

A unique 2D feature provides a means of creating colorful contour maps of the overall liquefaction potential index (LPI) and post-earthquake vertical settlements in plan view thus allowing the user to visualize the spatial variation of liquefaction potential and settlements across a site. The variations of calculated post-earthquake settlements across a site allow estimates of differential settlements for a given site and design earthquake.

A parametric analysis feature allows the user to vary both the earthquake magnitude and surface acceleration to evaluate the sensitivity of both the overall liquefaction potential index and post-earthquake settlements as a function of earthquake loading and results are presented in a 3D graphical form.

As with all of our software, all input and output data can be exported to an Microsoft® Excel file type for further manipulation.

Whether you are a current LiqIT registered user or a new user searching for a CPT liquefaction assessment software, we strongly believe that you should try CLiq.

Main Characteristics

  • Concise results based on the Youd et al. (2001) CPT procedure
  • Latest assessment procedure based on Robertson (2009) applicable to all soil types (cyclic liquefaction and cyclic softening)
  • Additional analysis option according to Boulanger & Idriss (2014), Idriss & Boulanger (2008) or Moss et al. (2006)
  • Imports raw CPTU data from any ASCII text file
  • Supports input and output in both the SI and Imperial unit systems
  • Basic interpretation results based on the comprehensive review by Lunne, Robertson, Powell (1997) and Robertson (2009, 2010)
  • Tabular presentation of all steps of the liquefaction assessment procedure
  • Graphical presentation of all steps of the liquefaction assessment procedure
  • Parametric analysis tool
  • 2D plain map creation feature for LPI or vertical settlements
  • Analytic reports


You can order Cliq over the Internet from ShareIt! company with any major credit card. The ordering page is on a secure server, ensuring that your confidential information remains confidential.

As soon as your request has been validated you will receive your registration key by email so that you can unlock the software immediately after your purchase (provided that you entered a valid Registration Name and HardwareID).

License Name No. of Licenses Price per License
CLiq 1  249 €
2 – 5  224 €
6 – 10  200 €

*Net prices, additional taxes may apply

Please contact us if you need an educational institution license.

Cliq is also included in the following bundles:

You may freely download a 30 days trial version of Cliq by clicking the download button below. The trial version becomes full working version after entering the registration data, so this is the only file you need to download. Before you begin the download you must read and agree with the License Agreement.

This setup program installs the latest trial version of Cliq. It is fully functional but does not allow you to save any project file. After you download the installer software, double click to execute it.

How to Uninstall Cliq

Cliq can be uninstalled by:

  • Open the Windows Control Panel
  • Select ‘Uninstall a Program’
  • Find Cliq in the list of programs and double click on it
  • Click the ‘Uninstall’ button in the Cliq Uninstall window
  • CLiq has been tested on IBM compatible machines using Windows® 2000, XP, Vista and 7 operating system
  • CLiq uses about 2.0 MB of disk space
  • CLiq requires GDI+ library (included in Windows® XP) which can be freely downloaded.
  • A 17” monitor is recommended for better performance.

This webinar provides worked examples of CPT-based liquefaction analyses using the software CLiq v.2.0. Presenter of the webinar is Dr. Peter K. Robertson, Technical Adviser at Gregg Drilling and Professor Emeritus at the University of Alberta. To view the webinar click the here.

To view the complete webinars list from Dr. Peter Robertson click here.