RSL III NX

One-dimensional local seismic response analysis using the equivalent-linear method on horizontal stratigraphic profiles.

RSL III NX

Key Features

Layered soil modelling — each layer defined by unit weight, shear-wave velocity (Vs), damping, and degradation curves G/Gmax and D (Seed, Vucetic & Dobry, Idriss, Darendeli & Stokoe).

Equivalent-linear iteration — iterative computation converging on the effective shear strain.

Flexible input motions — user-imported accelerograms, synthetically generated signals (band-pass FFT filtering with seismic envelope), or built-in example records.

Comprehensive outputs — surface PGA, response spectra Sa(T), Sv(T) and Sd(T), amplification function in frequency, elastic and design spectra, and ICMS 2018 normalisation (Fa, Fv, TB, TC, TD).

Seismic parameters — ag, F0 and Tc* computed automatically from coordinates or address for all limit states (SLO, SLD, SLV, SLC).

Professional deliverables — the software generates all the technical reports required for the project.

Reference Standards

NTC 2018, ICMS 2018, Eurocode 8.

Target Users

Geotechnical and seismic engineers performing site-specific ground response analyses for microzonation studies, building design on soft soils, and seismic hazard assessment.

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