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Table 1 Standard site classifications schemes according to the NBCC and Eurocode 8

From: Seismic microzonation of a region with complex surficial geology based on different site classification approaches

Code Site class and VS,30 (m/s)
A B C D E
NBCC (NEHRP) > 1500(*) 760–1500(*) 360–760 180–360 < 180
Eurocode 8 > 800(**) 360–800 180–360 < 180 (***)
  1. *Soft soil must be < 3 m in thickness
  2. **Surface weak materials must be < 5 m
  3. ***VS,avg < 360 m/s and thickness 5 < H < 20 m