A Proposed Rapid Visual Screening Procedure for Developing Countries

A Proposed Rapid Visual Screening Procedure for Developing Countries

Ningthoujam Monika Chanu (Department of Civil Engineering, NIT Durgapur, Durgapur, India) and Radhikesh Prasad Nanda (Department of Civil Engineering, NIT Durgapur, Durgapur, India)
Copyright: © 2018 |Pages: 8
DOI: 10.4018/IJGEE.2018070103

Abstract

Many earthquakes in the past had shown that major damage to structures took place in the absence of proper design, construction, and quality control. Based on the extent of damages caused by earlier earthquakes and the building vulnerability parameters that has caused the damages, a statistical analysis was carried out to develop a vulnerability score sheet. In this score sheet, a vulnerability score is computed considering building attributes such as soft storey, substantial overhang, re-entrant corners, the age of buildings, apparent material and construction quality, eccentric staircase location with respect to building plan, maintenance, soil type and a number of storeys. This score sheet will be a very helpful technique for assessing huge building stocks.
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Introduction

It has been observed that the seismic activity in the various part of India has increased in recent years. However, the disastrous effects of these can be minimized considerably through measures of scientific methods and understanding. The North-Eastern region of India alone has experienced many earthquakes of magnitude 7 or more in the recent past and suffered destructions and casualty. Many great earthquakes (Table 1) occurred in the past namely, 1897 Shillong, 1897 Assam, 1918 Srimangal, 1950 Upper Assam, 2011 Sikkim and 2016 Manipur. And the latest Manipur earthquake of 4th January of 2016, which caused heavy destruction and loss of life has shown how grave the region looming for an enormous seismic disaster.

Table 1.
Seismic activities in North East India
PlaceYearMoment MagnitudeRemarks
CacharMarch 21, 18697.8Numerous earth fissures and craters
Shillong plateauJune 12, 18918.7About 1542 people died
AssamJune 12, 18977.1About 1520 people died, damages to property and communication lines
SibasagarAugust 31, 19067.0Destruction of property
MyanmarDecember 12, 19087.5Destruction of property
SrimangalJuly 8, 19187.64500 km2 area suffered damage
SW AssamSeptember 9, 19237.1Destruction of property
DhubriJuly 2, 19307.1Railway lines, culverts and bridges cracked
AssamJanuary 27, 19317.6Destruction of property
NagalandAugust 14, 19327.0Destruction of property
N.E. AssamOctober 23, 19437.2Destruction of property
ArunachalJuly 7, 19477.5Destruction of property
Upper AssamAugust 15, 19508.7About 1520 people died, one of the biggest quake in the history
Patkai range, ArunachalAugust 25, 19507.0Damages to property
Manipur Burma borderMarch 21,19547.4Destruction of property
Darjeeling19597.5Destruction of property
Indo Myanmar borderAugust 6, 19887.5No casualty reported
SikkimSeptember 18, 20116.9Destruction of property, loss of lives, 67 dead
AssamMay 11, 20125.4No casualty reported
DibrugarhJune 28, 20155.5Destruction of property
ManipurJanuary 4, 20166.7About 11 people died, 200 people injured and destruction of property

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