The calculation tools are available free-of-charge for our registered tunneltrade users. To use the calculation tools you must be logged on as a registered user. If you want to enrol know please click here:

Calculation of pipe gap for curved microtunneling
The program calculates the resulting pipe gap and the angular deflection of pipes in curved microtunneling projects. Furthermore the required overcut is determined.

Planning of curved Pipejacking and Microtunneling projects
A usesull software tool to make brief design for curved pipe jacks and microtunneling projects. Dimensions taken out of a drawing are enough to feed the programm.

Conversion Program MESH - MICRON
This online tool is to convert the sieve fineness from Mesh to Micron and vice versa. A very helpful tool that is not available elsewhere in the internet!

Calculation of pipe weights and lifting forces in ground water
Easy software tool to determine the lifting force of pipes in ground water.The weight of the pipe is calculated against the lifting force given by the volume.

Company links

Korfmann Lufttechnik GmbH
Your supplier of ventilation systems for tunnelling, road and railway tunnels...

Consulting in tunneling
BABENDERERDE INGENIEURE advises worldwide on questions concerning planning, design, submission, process engineering

Roadheaders & more...
Alpine is a full service provider of excavator-mounted cutter heads, cutter-buckets and new and used roadheaders.
ALPINE Sales & Rental Corp.

ALBATROS Engineering
We supply special-purpose solutions in machine-engineering. We construct special machinery according to your needs.

SELI Tunnel Construction
SELI since 1950 is working in the TBM tunnelling industry and is the most experienced tunnelling company worldwide.