GGU-SIEVE: Examine filter stability after Cistin/Ziems

o examine the necessity of a filter layer in accordance with the Merkblatt Anwendung von Kornfiltern an Bundeswasserstraßen (MAK) (Fact Sheet for the Application of Grain Filters on Waterways), published by the Bundesanstalt für Wasserbau (BAW) in Karlsruhe, 2013 (Annex 2), the necessary soil properties (uniformity coefficients U and passage d₅₀) can be determined from existing grain size distribution curves for the relevant soils using this menu item. To do this, select the grain size distributions representing the soil and the filter from the dialog box.

The program then displays the determined values in a message box. The data can be transferred to the GGU-FILTER-STABILITY program via the Windows clipboard using the appropriate button.

After clicking the export button, the program first offers advice on the procedure for using the data copied to the clipboard in the GGU-FILTER-STABILITY program. After confirming the text the original dialog box opens again allowing the relevant grain size distributions to be selected. Exit the dialog box above by pressing "Cancel".