STUDY OF MODES OF STRUCTURAL FAILURE
DUE TO EARTHQUAKE
32nd Our World in Concrete and Structures (OWICs) - 2007
Shaukat Ali Khan*, University of Engineering & Technology Taxila, Pakistan
Block Masonry, Stone Masonry, Cladding
A devastating earthquake measuring 7.6 on Richter scale hit Pakistan at 8:50
AM on October 08, 2005. The earthquake was unprecedented in the history of the
country and caused very severe damages to the structures since they were not
designed for that intensity. Its epicenter was reported about 95 kilometers north-west of the capital Islamabad. The main cities and towns of Pakistan seriously affected include Muzaffarabad, Bagh, Rawalakot, Shenkari, Mansehra, Butgram, Balakot, Gari Habibullah. A part of the Margalla towers Islamabad collapsed while many other
buildings faced minor damages. The structures having major and minor damages
include brick-masonry, stone-masonry, block-masonry and RCC frame structures with brick-masonry cladding as well as block-masonry cladding. The affected buildings include single storey as well as multistoried structures. In hilly areas the buildings generally have roof trusses.
A study of damages to different structures is very important to adopt strategies for
future construction and to develop design codes so that the earthquake resistant
structures could be designed. In this paper a study of damages mainly for the brickmasonry and RCC frame structures with block-masonry cladding are discussed.