Analysis of systems for the infiltration of precipitation run-off according to the DWA-A 138 standard.

Only available in the german language.

Analysis of systems for the infiltration of precipitation run-off according to the DWA-A 138 standard (Deutsche Vereinigung für Wasserwirtschaft, Abfall und Abwasser e.V.; Planung, Bau und Betrieb von Anlagen zur Versickerung von Niederschlagswasser, April 2005).

The following systems are analysed:

  • Surface infiltration
  • Swale infiltration
  • Pipe infiltration
  • French drain infiltration
  • Shaft infiltration
  • Certain combinations of the above systems


  • Analysis using rainfall intensity tables from the KOSTRA atlas
  • Draft design also using Reinhold's rainfall series’
  • Import of the rainfall intensity data determined using the KOSTRA atlas via a file or via the Windows clipboard
  • Combination of infiltration systems compliant with DWA-A 138 (e.g. swale-pipe infiltration)
  • Combination of infiltration systems compliant with DWA-A 138 with paved areas (e.g. paving with swale)
  • Analysis of infiltration systems for a variety of frequencies (recurrence intervals)
  • Calculation of draining times for given infiltration types
  • User-defined output sheet
  • Print or copy screen sections, e.g. for transfer to a word processor
  • Integrated Mini-CAD system for additional annotation of graphics


Current updates & changes

  • 10.05 (16.09.2019)
    • Product management
  • 10.04 (06.09.2019)
    • Austrian rainfall intensity can be read.
  • 10.03 (17.07.2019)
    • Product management
  • 10.02 (15.07.2019)
    • The trough infiltration now with maximum accumulation height and enlargement of the trough area.
    • If the emptying time is too short, an increase in the trough area can also be calculated.
  • 10.00 (26.02.2019)
    • Mini-CAD: Layer designations can be defined.
    • PDF import implemented.
    • Screen visualisation accelerated.

    Info: Paid major update (free of charge for licensees with subscription or update insurance under the software service agreement)


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