WISTRA App

"Lashing strap calculator / Form-fit calculator" based on EN 12195-1:2004

The proven lashing strap slider as application

Calculate the required number of lashing straps to tie down a stable load or use the form-fit calculator to determine the maximum load unit weights, based on the maximum blocking capacity of the form-fit device.

The menu of the app is intuitive and practical. The data of the integrated angle meter can be taken over directly for the exact calculation as an efficient tool.

You can find further aids regarding load securing in the information of both areas.

It is our goal that you reach your destination safely!

Lashing strap calculator

Tying down stable loads

  • Selection of additional STF values up to 2,000 daN initial tension
  • Load weights up to 30 t – New – infinitely variable in 0.1 t steps
  • Reference table of sliding friction coefficients included for information

Form-fit calculator

  • Form-fit calculator up to 10,000 daN blocking capacity
  • Sliding friction coefficient setting from 0.0 to 0.6 μD in 0.1 steps
  • Reference table of sliding friction coefficients included for information