Evaluation and presentation of grain size distribution via:

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

Capabilities:

• 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

• 17.09 (29.04.2025)

  • Changeover to current Windows optics.
  • Extraction of further information for GGU-CONNECT Export: Soil group, individual components of the sieving, soil type.
  • Bugfix - Missing example files after changeover to new installation process.

• 17.08 (13.01.2025)

  • PDFs replaced by online manuals (access via F1 and menu).
  • Under ‘What's new’ link to the website for change logs.
  • Information dialogue that correction parameter R‘’0 must be entered negatively.

• 17.07 (20.09.2024)

  • Productmanagement

• 17.06 (31.05.2024)

  • Bugfix: Error in data storage for CONNECT leads to incorrect display of screen data

• 17.05 (24.05.2024)

  • Connection to GGU-CONNECT: Auto-filling with placeholders from CONNECT and export of water permeability, CU value, CC value, grain size distribution (grain indices)