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.

IABSE – WG7 workshop – Geneva 25.09.2015

The Earthquake

The number of reported d thdeaths was more than 6 2006.200

IABSE – WG7 workshop – Geneva 25.09.2015

The Earthquake

Time histories recorded in Kathmandu(April 25)

PGA ≈ 0.17g

IABSE – WG7 workshop – Geneva 25.09.2015

The Earthquake

Recorded Spectra(A il 25)(April 25)

IABSE – WG7 workshop – Geneva 25.09.2015

Kathmandu valley

IABSE – WG7 workshop – Geneva 25.09.2015

High-rise buildings

IABSE – WG7 workshop – Geneva 25.09.2015

Mid-rise buildings

IABSE – WG7 workshop – Geneva 25.09.2015

Low-rise buildings

IABSE – WG7 workshop – Geneva 25.09.2015

Wall fences

IABSE – WG7 workshop – Geneva 25.09.2015

Monasteries and temples

IABSE – WG7 workshop – Geneva 25.09.2015

Non-Engineered StructuresNon Engineered Structures

Historic Buildingsgin Kathmandu

IABSE – WG7 workshop – Geneva 25.09.2015

Durbar Square Kathmandu

IABSE – WG7 workshop – Geneva 25.09.2015

The Maju Deval Temple

Built in 1690

IABSE – WG7 workshop – Geneva 25.09.2015

Basantapur TowerBasantapur Tower

IABSE – WG7 workshop – Geneva 25.09.2015

King Pratap Malla Statue

IABSE – WG7 workshop – Geneva 25.09.2015

Multiple wythe masonry

IABSE – WG7 workshop – Geneva 25.09.2015

Non-Engineered StructuresNon Engineered Structures

Unreinforced Masonry Buildingsy gin villages

IABSE – WG7 workshop – Geneva 25.09.2015

Sunkhun Village

IABSE – WG7 workshop – Geneva 25.09.2015

Typical building elements

IABSE – WG7 workshop – Geneva 25.09.2015

Sakwo Village

IABSE – WG7 workshop – Geneva 25.09.2015

Wall thikness

IABSE – WG7 workshop – Geneva 25.09.2015