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

  • 16.00 (26.10.2018)
    • DIN EN ISO 17892-4:2017-04 completely new
    • PDF import implemented.
    • Number of sieves increased to 18.
    • Paid major update (free of charge for licensees with subscription or update insurance under the software service agreement)
  • 15.15.1803 (17.05.2018)
    • Product management
  • 15.11.1703 (27.11.2017)
    • Validity rules after USBR and Seelheim can be deactivated.
  • 15.10.1702 (27.09.2017)
    • Bugfix: d25 determination and k-value after Seiler
  • 15.09.1701 (07.06.2017)
    • Soil group with fill symbol

Show all entries


Single Program for CmActLicense *

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 **190,00 €
1 Year subscription NNL **5.890,50 €

All prices incl. VAT

*: CmActLicense, no need of CmStick, always current major program versions
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 dongle)