Evaluation and presentation of grain size distribution

Evaluation and presentation of grain size distribution via:

  • Sieve analysis
  • Hydrometer analysis
  • Combined sieve and hydrometer analyses


  • Variable sieving input (before/after sedimentation, partial mass weights, cumulative weight, in [g] or [%])
  • Define and save individual sieve sets
  • Input and save various hydrometers with their constants
  • Output of test results as graphics of percentages of grain fractions and as laboratory logs
  • Determine soil types to DIN 4022, ISO 14688-1, SEP or ASTM
  • Compute uniformity coefficients U and coefficients of curvature Cc
  • Determine the hydraulic conductivity to Hazen, Beyer, Mallet/Pacquant or Seelheim, including the respective validity rules
  • Determine the grain index
  • Determine the soil group and frost resistance to German standards (DIN), Swiss standard SN 670 008a or USC (ASTM 2487)
  • Take the coefficient of plasticity and the liquid limit into consideration for fine-grained soils
  • Visualise Therzaghi and/or USBR filter criteria
  • Estimate friction angle after Lang/Huder
  • Determine any number of passage values (e.g. grain sizes at d10, d30, d50, d60)
  • Mix grading curves using variable constituents of existing grading curves
  • Separate 2 grading curves to compute suffosion
  • Calculate filter stability to Cistin/Ziems via export to GGU-FILTER-STABILITY application
  • Determine grading curves using user-definable smoothing out procedures
  • Variable grading curve visualisation (user-definable line types and colours)
  • Graphics for up to 630 mm grain size diameter (> 200 mm = blocks)
  • Visualise grain size envelopes or boundary ranges via Extra GSDs (grain size distributions)
  • Cumulate up to 50 existing grading curves via Extra GSDs
  • Design your own graphics and log pages
  • 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

  • 16.05 (22.11.2019)
    • Bugfix: Read company data, if font size <= 0.0


  • 16.04 (18.04.2019)
    • Bugfix: Extra GSDs and hydrometer analysis to DIN EN ISO 17892-4:2017-04


  • 16.03 / 15.16 (19.03.2019)
    • Bugfix: Load sieve set automatically
  • 16.02 (14.02.2019)
    • Screen visualisation accelerated.


  • 16.01 (14.01.2019)
    • Bugfix: Edit grain size curve graphically, if hydrometer analysis was carried out to EN ISO 17892-4:2017-04
    • Mini-CAD: Layer designations can be defined.

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Single Program Subscription *

1 Year subscription NNL247,91 €

Single Program for CmStick

30 days FNL89,00 €
1 Licence FNL743,75 €

Complete GGU-Suite for CmActLicense *

10 hours PayPerUse NNL **240,00 €
1 Year subscription NNL **5.890,50 €

All prices incl. VAT

*: CmActLicense, no need of CmStick, always current major program versions. Not for virtualisation OS.
NNL: Non-network licence
FNL: Floating-network licence
**: Only available outside Germany, Austria and Switzerland

System preferences

GGU-Software runs on PCs with the following specifications:

  • Pentium III or higher processor
  • Microsoft Windows® 7, 8, 8.1and10 compatible
  • 500 MB free hard disk space
  • DVD-ROM drive or internet connection (for installation)
  • USB Interface 2.0 or higher (for licence CmStick dongle)
  • CmActLicences NOT on virtual maschines