CPT test interpretation. CPT-pro

CPT interpretation software CPT-pro is a multi-module program for comprehensive analysis, interpretation and presentation of cone penetrometer test CPT / CPTU, DMT dilatometer test and other field tests such as FFD and EC. Methods of CPT data interpretation along with formulae and graphs have mostly been extracted, with the knowledge and consent of the authors, directly from the monograph of: Lunne, T., Robertson P.K. and Powell J.J.M. Cone Penetration Testing in Geotechnical Practice. Published by Blackie Academic & Professional. 1997. 

The CPT-pro program is closely related to the Seismic-pro, CPT-CAD and GEO DB programs. Mutual relationships and connections are presented in the diagram below.

Dynamic soundings SPT and DPT are analyzed and interpreted in the program GEO DB.

General properties

CPT-pro can be applied for different formats of CPT data. You do not need to use any converters to open your files. Additionally, Import/Export procedures of CSV, GEF and AGS formats make CPT-pro totally universal. 

An important mechanism implemented in CPT-pro is export to the IFC format, which is the basic format for exchanging and archiving data in BIM technology.

Procedures for offshore soundings, including Down-The-Hole testing and automatic joining separate datafiles into ones are implemented.

Included Batch Processing and Batch Printing procedures make data reduction and interpretation extremely efficient and time saving.

Using the graphic tools of CPT-pro, particularly CAD type ones implemented in CPT-CAD and CPT Explorer modules, you may generate high quality and complete geotechnical and geological documentation. The built-in export procedures enable saving the drawings (maps and sections) created by the program in the form of DWG and DXF files, that enable further proceeding - if necessary - in other graphic programs, like  AutoCAD, MICROSTATION etc.

Borehole logs and results of field surveys can be saved in GEO DB database and documented in relevant logs. With this option CPT-pro can be used for generation of complex geological and geotechnical documentation.

Cpt-pro description (PDF)                Geo DB description (PDF)

System requirements: Windows 10/Windows 11

Thumbnails with graphs of all tests saved in selected directory are automatically generated. To generate header information highlight selected thumbnail. To select test for further analysis just double click it.

Selection of CPT test for further interpretation may be realized by double click of relevant symbol on  map.

Wersion with CPT-CAD module allows to insert DWG / DXF map as background, edition of that map and printing.

Classification of soils

The CPT interpretation software CPT-pro program has a number of procedures implemented that allow for interpretation in terms of classification of soils. These are:
▪ Robertson '86
▪ Robertson '90
▪ Robertson '2010
▪ Robertson '2016
▪ PN-B-04452
▪ Geosond
▪ Meigh '87
▪ Senneset '89

New graphic component allows to generate high quality printouts. layout of log i.e. number and location of graphs, location of header table, line characteristics etc. are fully controlled and customizable by operator.

Additional functions like tracking of parameter values and tracking classification result (individual and cloud) allows detailed analysis.

Geotechnical parameters

CPT interpretation software CPT-pro is very universal. In spite of number of implemented correlations, an add-on Formula Editor implemented in CPT-pro allows generate own complex conditional interpretation formulas, in which equations may vary depending on classification result, depth and values of selected parameter. All mathematical functions used in engineering practice are available.

Characteristic values of parameters

The CPT-pro program allows you to define geotechnical (GT) and geological-engineering (GI) layers, in which characteristic values ​​of geotechnical parameters are automatically calculated. The division into GI and GT layers is presented next to the lithological profile. Calculation results together with the values ​​of basic statistics can be saved in XLS format.

Characteristic values ​​of parameters are calculated using advanced statistical methods, including:
▪ Eurocode 7
▪ Schneider method
▪ Duncan method
▪ Polish Standard PN-81/B-03020
▪ First/fourth quarter method
▪ Confidence interval limits and Student's t-distribution

Dissipation tests

Analysis of dissipation tests is implemented. All relevant dissipation times like T20, T30 etc. are automatically calculated and presented on dissipation log.

Additional functions and properties

Extended header is fully compatible to GEF 1.1.3 and AGS 4.0. All fields included in these formats are included in Extended Header. User may select fields for printout in additional report.

Offshore Down-The-Hole test result consist of a number of short tests (usually around 3 m) separated by drilled sections. Implemented Automatic joining procedure generates one continuous CPTU log taking into account the location of zero tests.

The program enables full interpretation of DMT (Marchetti Dilatometer Test) tests according to the methods and correlations developed by prof. Silvano Marchetti. DMT interpretation results can be combined with CPT interpretation results on the same log or in a separate document.

A unique feature of the CPT interpretation software CPT-pro is the calculation of characteristic values of parameters ​​using a number of statistical methods.

The CPT-pro program allows defining geotechnical and geological-engineering layers, in which characteristic values ​​of geotechnical parameters are automatically calculated. Calculation results together with the values ​​of basic statistics can be saved in XLS format.

An additional reporting function is a tabular summary of classification results and basic characteristics for the selected probe package.

You can purchase CPT-pro also at: