New case
Operation
Shaft
Shield & entrance
Excavation
Ground
| Layer | Soil | h m | γt | γ′ | φ ° | c | N |
|---|
Layers start at ground level. The last layer continues below.
Jet grout
Columns
Design settings
Quantities
Leave drilling time and working days at 0 to count jetting sludge only.
Save or load inputs
Copy the text to keep a case or move it to another device. Paste a saved case and press Load.
Calculation sheet
Quantities
Reference tables
Calculations follow the design method of the Japan Jet Grout Association (JJGA) for JSG and Column Jet Grout. The program is checked against the JJGA worked examples on the Verification page. This is an independent tool, not affiliated with or endorsed by JJGA. Check the results and the site conditions before use on a project.