The 2025 - 2020 National Building Code of Canada Seismic Hazard Tool provides provides seismic values for the design of buildings in Canada under Part 4 of the National Building Code of Canada (NBC) 2020 and 2025, as prescribed in Article 1.1.3.1. of Division B of the respective NBC editions.
The user can choose to query results for any location in Canada based on a specified Vₛ₃₀ value (in the range of 140 to 3000 m/s) or Site Class (A, B, C, D or E). Spectral acceleration, peak ground acceleration and peak ground velocity values are provided for the probabilities of 2%, 5% and 10% in 50 years, as prescribed in the NBC. Other probabilities between 2% in 50 years and 40% in 50 years are also provided as additional information. The results are shown as tables, and can be downloaded as comma separated (CSV) files, or viewed as plots to aid in the interpretation of the data.