Seismic hazard in Risaralda
Aa, Av, Ae and Ad for its 14 municipalities under the NSR-10.
Photo: Josué Isaí Ramos Figueroa / Unsplash
According to Appendix A-4 of the NSR-10, of the 14 municipalities of Risaralda, all are in the high seismic hazard zone. The capital, Pereira, has Aa = 0.25 and Av = 0.25, high hazard. Across the department, Aa ranges from 0.25 to 0.30 and Av from 0.25 to 0.30.
- Municipalities
- 14
- Capital
- Pereira
- Aa / Av of the capital
- 0.25 / 0.25
- High hazard
- 14
- Intermediate hazard
- 0
- Low hazard
- 0
Municipalities of Risaralda
Values from Appendix A-4 of the NSR-10. Tap a municipality to open its design spectrum.
| Municipality | Code | Aa | Av | Zone | Ae | Ad |
|---|---|---|---|---|---|---|
| Pereira | 66001 | 0.25 | 0.25 | High | 0.20 | 0.10 |
| Apía | 66045 | 0.30 | 0.30 | High | 0.20 | 0.10 |
| Balboa | 66075 | 0.25 | 0.30 | High | 0.20 | 0.10 |
| Belén de Umbría | 66088 | 0.25 | 0.30 | High | 0.20 | 0.10 |
| Dos Quebradas | 66170 | 0.25 | 0.25 | High | 0.20 | 0.10 |
| Guática | 66318 | 0.25 | 0.30 | High | 0.20 | 0.10 |
| La Celia | 66383 | 0.30 | 0.30 | High | 0.20 | 0.10 |
| La Virginia | 66400 | 0.25 | 0.30 | High | 0.20 | 0.10 |
| Marsella | 66440 | 0.25 | 0.25 | High | 0.20 | 0.10 |
| Mistrató | 66456 | 0.30 | 0.30 | High | 0.20 | 0.10 |
| Pueblo Rico | 66572 | 0.30 | 0.30 | High | 0.20 | 0.10 |
| Quinchía | 66594 | 0.25 | 0.30 | High | 0.20 | 0.10 |
| Santa Rosa de Cabal | 66682 | 0.25 | 0.25 | High | 0.18 | 0.09 |
| Santuario | 66687 | 0.30 | 0.30 | High | 0.20 | 0.10 |
What does it mean for design in Risaralda?
Municipalities in the high hazard zone. In reinforced concrete, the NSR-10 only accepts systems with special energy dissipation capacity (DES) in the high hazard zone, the most demanding detailing in the code: confinement of columns and joints, and strict drift control.
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.
What the code requires in Pereira, with each city's soil and environment, is on its structural engineering page.
Frequently asked questions
What seismic hazard zone is Pereira in?
In the high seismic hazard zone: Aa = 0.25 and Av = 0.25, according to Appendix A-4 of the NSR-10.
Which municipalities of Risaralda have the highest seismic hazard?
The department's highest coefficient, 0.30, is found in 10 municipalities, including Apía, Balboa, Belén de Umbría, Guática, La Celia and La Virginia.
How many municipalities of Risaralda are in each seismic hazard zone?
Of 14 municipalities, 14 are in the high hazard zone, 0 in the intermediate zone and 0 in the low zone (NSR-10, Appendix A-4).
Other departments
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- Antioquia125 municipalities
- Arauca7 municipalities
- Atlántico23 municipalities
- Bogotá D. C.1 municipality
- Bolívar45 municipalities
- Boyacá123 municipalities
- Caldas27 municipalities
- Caquetá16 municipalities
- Casanare19 municipalities
- Cauca41 municipalities
- Cesar25 municipalities
- Chocó31 municipalities
- Córdoba28 municipalities
- Cundinamarca116 municipalities
- Guainía9 municipalities
- Guaviare4 municipalities
- Huila37 municipalities
- La Guajira15 municipalities
- Magdalena30 municipalities
- Meta29 municipalities
- Nariño63 municipalities
- Norte de Santander40 municipalities
- Putumayo13 municipalities
- Quindío12 municipalities
- San Andrés y Providencia2 municipalities
- Santander87 municipalities
- Sucre25 municipalities
- Tolima47 municipalities
- Valle del Cauca42 municipalities
- Vaupés6 municipalities
- Vichada4 municipalities
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