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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
EDM includes a small and large extent display, some buttons 
for general GIS functions such as, pan, zoom, select, identify..., 
and some buttons for specific GIS functions .Also it includes a 
column of layers, to enable or disable showing the layers. In the 
case of specific GIS functions, there are some buttons: a button 
which allows the managers or potential users to access to the 
database in order to create ,edit or delete the data from the GIS 
database, a button to routing ,a button to import post-event data 
from another on-line earthquake site .As soon as this post-event 
data imports in EDM , it allows the next button which is about 
estimation situation of buildings after the earthquake ‚to be 
enabled Then, BDEM begins to process the post-event data 
with pre-event data . Results of this processing will be shown 
by clicking ‘After’ button. In this way, managers immediately 
can see a primary estimation of extend and size of earthquake 
and its effects on the buildings on-line. Utilizing relevant GIS 
functions makes managers to decide rapidly. The system is now 
testing and setting up at K.N.T University and is going to be 
completed specially on database and modelling using more 
parameters. 
4. CONCLUSIONS 
A Web-based GIS and a Building Damage Estimation Model 
(BDEM) has been developed for supporting earthquake disaster 
management of Tehran. This system helps to estimate the extent 
and size of damages, just after the earthquake. It also, helps the 
managers to rapidly response to earthquake disaster. This takes 
a lot of advantages to the managers by decreasing the cost and 
response time to make better decision during and just after the 
earthquake. 
S. REFERENCES 
Yalciner, O., 2002. Report on the GlSdevelopment thesis 
session , Joint Urban Information System for Earthquake 
Resistant cities :a case study on Pend k Istanbul, 
http://www.gisdevelopment.net/thesis/ thesis2/ (accessed 25 
Sep. 2003) 
ESRIWhitePaper, 1999. GIS for Emergency Management, 
Environmental Systems Research Institute, United States of 
America, http://www .esri.com/library/whitepapers/pdfs/emermg 
mt.pdf (accessed 26 Apr. 2004) 
Japan international cooperation Agency ,JICA, Centre for 
earthquake and environmental studies of Tehran ,CEST, Tehran 
Municipality, 2000 .The Study on Seismic Microzoning of the 
Greater Tehran Area in the Islamic Republic of Iran , Tehran, 
Iran, pp. ! 
Ralston, B., 2002. Developing GIS Solution with MapObjects 
and Visual Basic . United State . pp. 188-190 
Saydi, M., 2003. Design and Implementation of a Web-based 
GIS for Earthquake disaster management (Case study: Tehran) 
MSc Thesis, K.N.T University, Tehran, Iran. 
Mansourian, A., Rajabifard, A., Valadan Zoej, M. J., 2004a. 
Towards Developing SDI. for Disaster Management, 
Proceedings of 7th GSDI Conference, Bangalore, India. 
Mansourian, A., Rajabifard, A., Valadan Zoej, M. J., 2004b. 
SDI and Network-Based GIS for Disaster Management, 
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Geoinformatics(Geolnformatics2004),GavleUniversity, Sweden.