2015 National Building Code of Canada seismic hazard maps

2015 seismic hazard maps of Canada show the level of seismic hazard and an indication of the direction and steepness of the hazard gradient across the country. Note that the colour scale is adjusted from map to map in order to show national variations in a sensible way. It is not intended that values be read off these maps (hence their small scale). Instead, values for individual sites can be determined from the 2015 seismic hazard calculator. Maps of spectral (Sa(T), where T is the period in seconds) and peak ground acceleration (PGA) values are given in units of g (9.81 m/s2). The map of peak ground velocity (PGV) is given in m/s. Values are for "firm ground" (NBCC 2015 Site Class C, average shear wave velocity 450 m/s).

2015 NBCC seismic hazard map - Sa(0.05)

Spectral acceleration for a period of 0.05 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(0.1)

Spectral acceleration for a period of 0.1 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(0.2)

Spectral acceleration for a period of 0.2 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(0.3)

Spectral acceleration for a period of 0.3 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(0.5)

Spectral acceleration for a period of 0.5 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(1.0)

Spectral acceleration for a period of 1.0 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(2.0)

Spectral acceleration for a period of 2.0 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(5.0)

Spectral acceleration for a period of 5.0 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - Sa(10.0)

Spectral acceleration for a period of 10.0 seconds at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Spectral acceleration is contoured in g.

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2015 NBCC seismic hazard map - PGA

Peak ground acceleration at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Peak acceleration is contoured in g.

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2015 NBCC seismic hazard map - PGV

Peak ground velocity at a probability of 2%/50 years for firm ground conditions (NBCC Site Class C). Peak velocity is contoured in m/s.

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