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Tools
Engineering tools
Free, browser-based tools for tunnel engineering and engineering automation. Everything runs in your browser — your project data never leaves your machine.
Available tools
Tunnel Profile Designer
Design circular and D-profile cross-sections with parametric controls, lining offsets, and DXF and SVG export.
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In development
More calculators on the way
Ground reaction curves, Hoek–Brown parameters and convergence trends are next. Newsletter subscribers hear first.
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Tools are educational aids, not certified design software. Check every result independently before using it in design — see the terms of use.