In this Apeiron tutorial, we will explore how to use the Dataset module within a Project.
Introduction
Apeiron ensures a seamless journey from dataset preparation to insightful visualization, empowering users with a robust platform for advanced civil engineering analysis.
The Dataset module is where investigation data is prepared for all downstream calculations within a Project Stage. It acts as the single source of truth for investigation data within a Stage. Changes that you make to investigations in your Dataset will apply to all downstream calculations without affecting the raw investigation data.
Accessing the Dataset Module
Every Project Stage that you create automatically comes with a Dataset module. To get started, create a Stage within your Project and then click on the automatically added Dataset.
Adding Investigations
Click on individual investigations to add them to your Dataset, or use the lasso selection tool for bulk selection. Confirm your choices with a double click. Investigations can also be given a custom name for this Stage. After your selections are finalized, save your progress to transition to data cleaning.
Only CPTs are available for use within the Dataset module at the moment, but more investigation types like boreholes are coming soon.
You can return to the selection page to add or remove investigations at any time by clicking on the cursor button in the top right corner.
Analysis Tabs
While in any of the analysis tabs, use the selected CPT dropdown inside the data bar to switch between the different CPTs in your Dataset. The data bar also includes the ability to switch between plotting in elevation vs depth and to fix the vertical axis to make it easier to compare investigations that have different termination depths.
Groundwater
The groundwater tab allows you to adjust the groundwater level measured during the investigation. The default is the value associated with the raw investigation but is set to zero if it's not available.
Inverse Filtering
The inverse filtering tab allows you to adjust the cone tip resistance and sleeve friction of the CPT. If you would like to perform analysis using this investigation with small adjustments, such as a different pre-drill value or elevation than what the metadata of the investigation suggests, it can be modified for your calculations here. Thin layer correction can be applied by specifying the cone tip area of the CPT.
You can either use the inverse filtered trace, the raw trace, or a customised trace based on your project requirements. In the customised trace option, you can modify your CPT trace to be any combination of the raw trace, the inverse filtered trace or user-specified qc and fs values. For example, to verify the effect of ground improvement, you may want to manually overwrite the qc and fs values at the top of the trace based on the ground improvement work that was carried out on the site.
Unit Weight
The unit weight tab allows you to specify the unit weight profile used to calculate the vertical soil stress profile. A default value of 18 is adopted for all CPTs and can be modified if needed.
Fines Content
The fines content tab allows you to specify the fines content profile, either using an Ic to FC correlation by specifying a Cfc value or a user-specified Fines Content profile. If laboratory test data is available, it can be plotted on the Fine Content profile to make sure the Cfc value selected correlates well with the test data.
Assessment
The assessment tab shows you the derived parameters that will always be calculated and allows you to select which estimated parameters you would also like to include in your results.
This is also the tab where you start the final analysis. In order to use the results of a Dataset in a downstream module, you must first have completed at least one analysis. To perform this analysis, make sure that you have saved your changes using the save icon in the top right corner next to the cursor icon, and then click the Analyse All button. The analysis may take up to a minute to complete, however, you are free to leave this page and come back at any time without disrupting your analysis.
Upon successful completion, click the View Results button to switch to the results view.
Results
In the results view, you will be able to view the correlated parameters for all the investigations in your Dataset module. You may have to scroll horizontally or zoom out to view all of the results graphs, depending on the size of your screen.
Switch between different CPTs using the selected CPT dropdown. You can also fix the vertical axis and choose to view in elevation rather than depth when viewing the output graphs.
You can return to the analysis view at any time by clicking on the Return to Analysis button at the bottom of the page.
Visualise Results on the Map
Your analysis results can also be visualised geospatially in the GIS portal. To do this, click on the View Results on Map button below the output graphs.
The results on the map are colour-coded based on the median value of the selected depth range. For example, blue means the median qc1N value in the 0.5 m range is between 0 and 50. Toggle through different depth ranges for your parameters to see how they vary with depth. This can be useful to discern site-wide patterns. You can also click on individual investigations on the map for more details.
Click the back button in the top left corner to return to your previous view.
Export Results
Results can be exported for further external manipulation if needed. To do so, click on the Generate Output button inside the results view. Choose which investigations you would like to include in your output, and then click generate on the type of output you would like. Excel export is available now, while PDF export will be made available in the coming weeks.
It may take up to a minute to generate your output. Once it is ready, click the download latest output button to save a copy of the analysis results to your computer.
Conclusion
Those are the basics of the Dataset module! If you need further support or have any suggestions, then please contact us by submitting a request in the top right-hand corner or by emailing support@infinitystudio.ai.