<< Click to Display Table of Contents >> Navigation:  Chapter 9 Geotechnical Data Management > Geotechnical Tests > Entering Test Data > Soil and Aggregates Tests > Falling Head Permeability > Data Entry > Falling Head Data Tab

This tab is used to specify the data of the test.

 

 

Toolbar

 

The buttons on the toolbar at the top of the tab can be used to enter, copy, and paste the data.

 

Add: This is used to add a new set of measurements at the selected row.

 

Delete: This is used to delete the measurements on the selected row.

 

Cut: This will cut (remove) all of the measurements and store them in the clipboard.

 

Copy: This will copy all of the measurements and store them in the clipboard.

 

Paste: This will paste the information in the clipboard into the measurement grid. It can be used to copy measurement data from Excel, by selecting and copying the axial force and axial displacement columns in Excel and pasting them into the grid.

 

Clear: This will remove all of the measurements.

 

 

Set Data

 

Each set represents one measurement of the permeability. The data for each set consist of the information below:

 

Time: This is the measured time from the start of the test.

 

Height of Water in Standpipe: This is the height of water in the standpipe at the specified time.

 

Temperature: This is used to specify the water temperature.

 

Hydraulic Conductivity: This is the calculated hydraulic conductivity.

 

Hydraulic Conductivity at 20°C: This is the calculated hydraulic conductivity corrected to 20°C (68°F).

 

Height Predicted by Average: This is the calculated height of water in the standpipe predicted using the average hydraulic conductivity.

 

Height Predicted by Regression: This is the calculated height of water in the standpipe predicted using regression analysis.