Preliminary damage surveyPreliminary damage … Earthquake/Devis...Preliminary damage surveyPreliminary damage survey after Gorkha Earthquakeafter Gorkha Earthquake (Nepal 2015)(Nepal

Preliminary damage surveyPreliminary damage survey after Gorkha Earthquakeafter Gorkha Earthquake

(Nepal 2015)(Nepal 2015)

Ph.D. , S.E. Devis Sonda

IABSE – WG7 workshop – Geneva 25.09.2015

The EarthquakeOn April 25 a 7.8 magnitudeearthquake, located 81

May 12

km northwest of Kathmandu

O M 12 dOn May 12, a second 7.3 magnitude earthquake, located northest of Kathmandunorthest of Kathmandu

Powerful aftershocks continued includingcontinued, including 5.6 and 6.3 magnitude.


The Earthquake

The number of reported d thdeaths was more than 6 2006.200


The Earthquake

Time histories recorded in Kathmandu(April 25)

PGA ≈ 0.17g


The Earthquake

Recorded Spectra(A il 25)(April 25)


Kathmandu valley


High-rise buildings


Mid-rise buildings


Low-rise buildings


Wall fences


Monasteries and temples


Non-Engineered StructuresNon Engineered Structures

Historic Buildingsgin Kathmandu


Durbar Square Kathmandu


The Maju Deval Temple

Built in 1690


Basantapur TowerBasantapur Tower


King Pratap Malla Statue


Multiple wythe masonry


Non-Engineered StructuresNon Engineered Structures

Unreinforced Masonry Buildingsy gin villages


Sunkhun Village


Typical building elements


Sakwo Village


Wall thikness


Preliminary damage surveyPreliminary damage … Earthquake/Devis...Preliminary damage surveyPreliminary damage survey after Gorkha Earthquakeafter Gorkha Earthquake (Nepal 2015)(Nepal

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