en Analysis of Passive Defense in Plants and Equipment in Rasht تخصصي Special پژوهشي Research Metropolitan city of Rasht as the largest nucleus of population density in Gilan province place most of the manpower, investment, economic and infrastructure projects. The same subject make necessary to study the main arteries and land usage of Rasht city of in terms of passive defense. Passive defense as a set of preventive measures cause to increases deterrence, reducing vulnerability, sustain essential activities, promote national stability and easing crisis Management against the threat and military, natural and human action. According to research that deals with the vital arteries of the Rasht city in terms of passive defense, at first it was necessary to predicted threat scenarios for demand centers (centers vulnerable to threats). Therefore, the future threats that may be suffered were identified in Rasht. Then due to the type of threat, risk-taking, damage radius, impact intensity, importance and priority, different area of Rasht (study area) valuated using experts and pundits and using AHP model. In this process, the risk place of Rasht in three areas (high risk, medium risk, low risk) was identified in GIS medium. Finally, the position of each demand center associated with critical artery, area risk, supply centers (aid in crisis) and arrangement manner, access, distribution, and proximity to Main Street were examined. The study showed that in current condition, the main artery and branches in Rasht due to stars pattern of the city and nearby land use, accordance with the standards and considerations of passive defense, are not in direction to suitable respond to possible crises. Metropolitan city of Rasht as the largest nucleus of population density in Gilan province place most of the manpower, investment, economic and infrastructure projects. The same subject make necessary to study the main arteries and land usage of Rasht city of in terms of passive defense. Passive defense as a set of preventive measures cause to increases deterrence, reducing vulnerability, sustain essential activities, promote national stability and easing crisis Management against the threat and military, natural and human action. According to research that deals with the vital arteries of the Rasht city in terms of passive defense, at first it was necessary to predicted threat scenarios for demand centers (centers vulnerable to threats). Therefore, the future threats that may be suffered were identified in Rasht. Then due to the type of threat, risk-taking, damage radius, impact intensity, importance and priority, different area of Rasht (study area) valuated using experts and pundits and using AHP model. In this process, the risk place of Rasht in three areas (high risk, medium risk, low risk) was identified in GIS medium. Finally, the position of each demand center associated with critical artery, area risk, supply centers (aid in crisis) and arrangement manner, access, distribution, and proximity to Main Street were examined. The study showed that in current condition, the main artery and branches in Rasht due to stars pattern of the city and nearby land use, accordance with the standards and considerations of passive defense, are not in direction to suitable respond to possible crises. Metropolitan city of Rasht, passive defense, vital arteries, Risk area Metropolitan city of Rasht, passive defense, vital arteries, Risk area 159 170 http://ijurm.imo.org.ir/browse.php?a_code=A-10-727-1&slc_lang=en&sid=1 Mohammad Taqi Rahnamaee محمدتقی رهنمایی 10031947532846001959 10031947532846001959 No دانشگاه تهران Parvaneh Zivyar پروانه زیویار 10031947532846001960 10031947532846001960 No دانشگاه آزاد اسلامی واحد یادگار امام شهر ری Sabereh Salaah Kaar صابره صلاح کار 10031947532846001961 10031947532846001961 No دانشگاه آزاد اسلامی واحد مشهد Hasan Hoseini Amini حسن حسینی امینی amini1388@yahoo.com 10031947532846001962 10031947532846001962 Yes دانشگاه خوارزمی