ISKRIT / Site investigation & geotechnics / Soil test statistics
Site investigation & geotechnics
Statistical analysis of soil properties per GOST 20522
For each engineering-geological unit the tool computes normative and design values of soil properties: it rejects outliers, calculates the coefficient of variation, and derives the soil reliability factor. Accepts data from AGS4 exchange files.
Data current as of 2026-09-26
Standards
GOST 20522-2012: outlier rejection (table E.1), tα coefficient (table E.2), confidence levels 0.85 and 0.95.
Input
Individual test values per EGU, or an AGS4 file.
Output
Xn, X, V, γ per property, plus an outlier rejection log.
What it does
- Characteristic and design values with the full outlier log
- Enter the sample line by line or load AGS4, export to XLSX, print
- Calculations are stored on the server and reopen next time, company letterhead with signatures
Price
Free in full, no sign-up and no payment.
Open the calculator →Questions
How many determinations are required?
Per GOST, at least six for mechanical properties and ten for physical properties.
Does it match hand calculations?
Yes, tables E.1 and E.2 in the reference are generated by the same engine function.