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CPT testing

Cone Penetration Testing (CPT) provides engineers with large amounts of data that can be used for analysis, typically up to approximately 40 points per metre of exploration. Each raw data point typically consists of depth, tip resistance, sleeve friction, and pore pressure. Converting this from the raw data (usually a text file) to something useful that can be analysed and reported is a tedious and cumbersome process. It requires significant amounts of manual data manipulation (moving, copying and pasting) that is prone to human error. Furthermore, to do anything useful with the data, the engineer must then calculate numerous parameters and correlations that can be used in follow-on design and analysis.

Dataforensics RAPID CPT, a gINT Add-in, eliminates all manual data manipulation, providing a more complete and accurate interpretation of results, faster and easier than ever before. RAPID CPT is your Data. On Purpose.

Import and analyse your CPT data easily and quickly

CPT data import

Dataforensics' RAPID CPT makes importing data as easy as a few clicks of a mouse…without any transposition errors. Dataforensics has created the capability to import CPT data from the raw text files for Vertek files (.ecp), Hogentogler Digital files (.cpt), Hogentogler Analog files (.cpd) and Geotech AB (.cpd) files. We can add importers for other CPT manufacturer formats upon request. RAPID CPT now supports importing raw data in both English (Imperial) and Metric units. From a menu in gINT, simply choose which type of CPT data to import and select the file(s) to import. All data manipulation is automatically done for you.

RAPID CPT also facilitates importing pore pressure dissipation data for Vertek cones and processed shear wave velocity from Excel spreadsheets. This enables you to store all CPT data in the same database.

CPT analysis & reporting

Once the CPT data is imported into gINT, you can start your analysis and reporting. Dataforensics RAPID CPT automatically calculates the following parameters upon importing the data into gINT:

• Normalised Soil Behaviour Type based on Friction Ratio– Qt vs Fr

• Normalised Soil Behavior Type based on Pore Pressure – Qt vs Bq

• Soil Behaviour Type based on Friction Ratio– qt vs Fr

• Soil Behaviour Type based on Pore Pressure – qt vs Bq

• Total Density (r)

• Relative Density (Dr)

• Void Ratio (e0)

• Effective Friction Angle (f')

• Constrained Modulus (M)

• Coefficient of Lateral Earth Pressure (K0)

• Undrained Shear Strength (Su)

• Overconsolidation Ratio (OCR)

• Sensitivity

• Fines Content

• Equivalent (N) 60

In many cases RAPID CPT calculates multiple correlations for the same parameter. For example, there are three OCR correlations and five undrained shear strength correlations to choose from.

Analyzing your CPT data dynamically

Dataforensics RAPID CPT encapsulates most typical CPT analyses. Dataforensics RAPID CPT for gINT has over 40 calculations and correlations typically used by professionals evaluating CPT data. If the tool does not include a correlation you use, we can add it to your customised version of the tool or you can write a gINT Rule to do this yourself.

Dynamic calculations

RAPID CPT system is flexible. The user can specify various parameters which affect the analysis including:

• The Min and Max Drained Threshold Zone i.e. the soil behaviour type zones where the material exhibits drained behaviour 

• The Soil Behaviour Type (Q t vs B q or Q t vs F r ) used in determining whether the material exhibits drained or undrained behaviour

• Geographic parameters such as N u , N kT , N k , N c

• Water depth

• Total density for the entire soil profile or for specific depth ranges or even using the total density estimated by the software

• Smoothing of the Soil Behaviour Type via a moving average function

• Input/Output Units (MPa, kPa, Bars, ksf, psf, psi, tsf)

Streamlined analysis

Any change you make updates all calculations immediately. Thus all changes are reflected immediately on all reports you generate. You no longer have to recalculate values in Excel or whatever program you are using, and then import the data into gINT again to include it on borehole logs, CPT reports, etc. Dataforensics' RAPID CPT allows you to perform the entire analysis and reporting process within one software package. If you change one value in gINT, all values are updated, and all graphs immediately reflect the changes.

Dynamic reports

RAPID CPT includes two different types of reports, the standard report and the dynamic report. For all reports, the software determines relevant scales for the x and y axes of each plot. However, the user can specify values to override the x and y axes scales. The standard report always shows q t , f s , pore pressure, friction ratio, Soil Behaviour Type and either shear wave velocity or equivalent (N) 60 . The dynamic report allows the user to choose which parameters to include on a report and the order in which they appear. Click here to view sample CPT reports.

Additionally, you can specify up to 3 different moving average intervals to smooth plots of the Soil Behaviour Type Normalised Friction Ratio and Normalised Pore Water Pressure Ratio. This is particularly useful for investigating different moving average intervals that are used to create a generalised soil profile. It allows you to customise the amount of smoothing that occurs within a sounding for the Soil Behavior Type.

With Dataforensics' RAPID CPT Add-in for gINT you cannot make a calculation error – it is allautomated. Your data quality and consistency are greatly improved with our RAPID CPT tool.

Save hours of engineer time on each CPT sounding

Shorten your analysis time while enhancing your analysis

Consider how long it takes you, an engineer, to develop a CPT log and report. A client estimated it took them approximately 3 hours per CPT sounding to import and analyse the data. With Dataforensics CPT gINT Add-in, the import is complete in seconds, and calculations are instantaneous. Analysis time is reduced to minutes because evaluation processes are encapsulated in one software system with dynamic capabilities appropriate for evaluation. Yousave at least 3 hours of engineer work per CPT sounding using RAPID CPT for gINT.

Shorten your QA/QC time – and improve your data quality

In addition, your QA/QC time is drastically reduced since a standard data structure with standardised formulas is used for analysis instead of customised Excel spreadsheets, customised for each CPT sounding you have.

You have invested a lot of money and time in to using CPT technology. Your clients expect the most from their investment. Dataforensics' RAPID CPT gives you instant access to your data for in-depth analysis.

Get more value from your project data with PLog Enterprise system

You can purchase the PLog Enterprise Edition to archive all of your Site Investigation projects and their data. PLog Enterprise will archive all of your project data from gINT, including your CPT data, and store it in a single repository. No longer will you have to know a specific project number before searching for historical data. You can query PLog Enterprise system to locate data based on soil type, coordinates, or almost any other identifying information stored in your gINT project.

By archiving your project data electronically with PLog Enterprise System, you can quickly and easily retrieve and reuse your information to develop cost effective geotechnical investigations, geotechnical recommendations and geotechnical designs.

Your historical data is a huge asset – PLog Enterprise edition makes it easy for you to utilise this asset. It's your Data. On Purpose.