The GGU-SEEP program allows the calculation of the following installations for precipitation seepage according to german ATV A-138 (January 2002): • Surface seepage • Depression seepage • Pipe seepage • Seepage in gravel filled drain trenches • Shaft seepage As data input is in accordance with Windows conventions it can be learnt almost without the use of a handbook. The graphic output supports the true-type fonts provided by Windows, so that you can be sure of an excellent layout. Colour output and bitmap graphics are supported. System requirements GGU-Software runs on PCs with the following specifications: • Pentium I or higher processor • minimum 32MB memory • Microsoft Windows 98, Windows NT, 2000, XP • 10MB free hard disk space • CD-ROM drive (for installation) • VGA or higher resolution monitor