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Seismic hazard

Seismic hazard in Amazonas

Aa, Av, Ae and Ad for its 11 municipalities under the NSR-10.

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According to Appendix A-4 of the NSR-10, of the 11 municipalities of Amazonas, all are in the low seismic hazard zone. The capital, Leticia, has Aa = 0.05 and Av = 0.05, low hazard.

Municipalities
11
Capital
Leticia
Aa / Av of the capital
0.05 / 0.05
High hazard
0
Intermediate hazard
0
Low hazard
11

Municipalities of Amazonas

Values from Appendix A-4 of the NSR-10. Tap a municipality to open its design spectrum.

Source: NSR-10, Title A, Appendix A-4. Zone according to A.2.3.
MunicipalityCodeAaAvZoneAeAd
Leticia910010.050.05Low0.040.02
El Encanto912630.050.05Low0.040.02
La Chorrera914050.050.05Low0.040.02
La Pedrera914070.050.05Low0.040.02
La Victoria914300.050.05Low0.040.02
Mirití-Paraná914600.050.05Low0.040.02
Puerto Alegría915300.050.05Low0.040.02
Puerto Arica915360.050.05Low0.040.02
Puerto Nariño915400.050.05Low0.040.02
Puerto Santander916690.050.05Low0.040.02
Tarapacá917980.050.05Low0.040.02

What does it mean for design in Amazonas?

Municipalities in the low hazard zone. In reinforced concrete, the NSR-10 accepts structures with minimum energy dissipation capacity (DMI) in the low hazard zone, with the simplest detailing, and for occupancy groups I and II it limits the irregularity checks to a few types (A.3.3.6).

The municipality's value is only the starting point: the soil profile sets the coefficients Fa and Fv, and the occupancy group sets the importance factor. Work out the full spectrum with the NSR-10 design spectrum, or look up another municipality in the seismic hazard tool.

Frequently asked questions

What seismic hazard zone is Leticia in?

In the low seismic hazard zone: Aa = 0.05 and Av = 0.05, according to Appendix A-4 of the NSR-10.

Which municipalities of Amazonas have the highest seismic hazard?

The department's highest coefficient, 0.05, is found in 11 municipalities, including Leticia, El Encanto, La Chorrera, La Pedrera, La Victoria and Mirití-Paraná.

How many municipalities of Amazonas are in each seismic hazard zone?

Of 11 municipalities, 0 are in the high hazard zone, 0 in the intermediate zone and 11 in the low zone (NSR-10, Appendix A-4).

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