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CNOSSOS-EU

Calculation acc. to ...

The calculations can be performed according to:

Only the calculation methods available with the license are shown.

Note: Projects created with CadnaA 2021 MR2 or earlier are opened with calculation method „2015/996 XX without 17534“ 17534-4-20. This option is only available when opening earlier projects and ensures a recalculation with the same results.

Use Non-Standard Reference Time D/E/N

With this option deactivated the following time interval lengths are used: D=12 h, E=4 h, N=8 h. When activated the time intervals and penalties on the „Reference Time“ tab (see Reference Time Tab) are taken into account.

Note

The values displayed here are updated based on the defined time intervals DEN on the „Reference Time“ tab.

All Emissions at 0.5m above railhead

The emission model according to CNOSSOS-EU considers multiple emission heights. Activating this option will put all emission to a common height of 0.5 m above railhead.

Ground Absorption in Source-Region

see CNOSSOS-EU, Additional Information

Meteorology

see CNOSSOS-EU

Number of Train-Barrier-Interactions

Specify the number of train-barrier-interactions to be considered in the calculation. Consider that a single interaction means two reflections, one at the screen and the other at the train‘s body. The calculation is implemented according to EU-2021, amendment (9), section k.