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Seismic hazard

Seismic hazard in Cesar

Aa, Av, Ae and Ad for its 25 municipalities under the NSR-10.

Photo: Amsterdam City Archives / Unsplash

According to Appendix A-4 of the NSR-10, of the 25 municipalities of Cesar, 11 in the intermediate hazard zone and 14 in the low hazard zone. The capital, Valledupar, has Aa = 0.10 and Av = 0.10, low hazard. Across the department, Aa ranges from 0.10 to 0.20 and Av from 0.10 to 0.15.

Municipalities
25
Capital
Valledupar
Aa / Av of the capital
0.10 / 0.10
High hazard
0
Intermediate hazard
11
Low hazard
14

Municipalities of Cesar

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
Valledupar200010.100.10Low0.050.03
Aguachica200110.150.15Intermediate0.080.04
Agustín Codazzi200130.100.10Low0.070.04
Astréa200320.100.10Low0.080.04
Becerril200450.100.10Low0.080.04
Bosconia200600.100.10Low0.080.04
Chimichagua201750.100.10Low0.080.04
Chiriguaná201780.100.10Low0.080.04
Curumaní202280.150.10Intermediate0.080.04
El Copey202380.100.10Low0.080.04
El Paso202500.100.10Low0.080.04
Gamarra202950.150.15Intermediate0.080.04
González203100.200.15Intermediate0.080.04
La Gloria203830.150.15Intermediate0.080.04
La Jagua de Ibirico204000.100.10Low0.080.04
La Paz206210.100.10Low0.060.03
Manaure204430.100.10Low0.080.04
Pailitas205170.150.10Intermediate0.080.04
Pelaya205500.150.15Intermediate0.080.04
Pueblo Bello205700.100.10Low0.050.03
Río de Oro206140.200.15Intermediate0.080.04
San Alberto207100.200.15Intermediate0.080.04
San Diego207500.100.10Low0.050.03
San Martín207700.200.15Intermediate0.080.04
Tamalameque207870.150.10Intermediate0.080.04

What does it mean for design in Cesar?

Municipalities in the intermediate hazard zone. In reinforced concrete, the intermediate hazard zone no longer allows minimum dissipation (DMI): the structure is designed with moderate (DMO) or special (DES) energy dissipation capacity, with more reinforcement detailing requirements.

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.

What the code requires in Valledupar, with each city's soil and environment, is on its structural engineering page.

Frequently asked questions

What seismic hazard zone is Valledupar in?

In the low seismic hazard zone: Aa = 0.10 and Av = 0.10, according to Appendix A-4 of the NSR-10.

Which municipalities of Cesar have the highest seismic hazard?

The department's highest coefficient, 0.20, is found in González, Río de Oro, San Alberto and San Martín.

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

Of 25 municipalities, 0 are in the high hazard zone, 11 in the intermediate zone and 14 in the low zone (NSR-10, Appendix A-4).

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