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: Using CTRAN/W and AIR/W to track how contaminants move through soil and groundwater. A Note on Software "Cracks"

A simplified analytical solution for drawdown in a homogeneous slope (Steady‑state Boussinesq equation) was used to verify SEEP/W head distribution at t = 24 h. Discrepancies were < 3 %, confirming mesh adequacy. Additionally, a limit‑equilibrium calculation (Fellenius method) yielded a factor of safety (FoS) of 1.15 at t = 0 h, which matched the initial SLOPE/W result.

She added the —a discontinuity that ran the entire 80‑meter length of the wall at a height of 19 m above the base. In the software, this was represented by a set of cohesion‑reduced zones along the crack plane, each assigned a near‑zero cohesion value (c ≈ 0 kPa) and a friction angle reduced to 5°. The crack was not just a line; it was a zone with a width of 0.2 m, designed to capture the possible opening and sliding behavior that the field engineer had observed.

The software features an intuitive interface that makes it accessible to users of various skill levels, from beginners to experienced professionals.