Natural Hazard Resilience in IranPresentation Transcript
A Perspective on Natural Hazard Resilience in Iranian CitiesDavid AlexanderUniversity College London
The rosebud and the soulWrite mysteries on their margins,Fold by fold,Stay closed,And wait.Hafez Shirazi
BENIGN (healthy) at the service of the peopleIDEOLOGY interplay dialectic CULTURE MALIGN (corrupt) at the service of vested interestsJustification Development [spiritual, cultural, political, economic]
Aspects ofpreparedness in Iran
Earthquake preparedness information campaigns
Civil protectionand emergency response
Critical infrastructure protection
The complexity and diversity ofIranian urban environments presentsa challenge to disaster risk reduction
Tehran• 8-16 million inhabitants• three fault systems: mag. 6.9-7.1• last major quake 1840: seismic gap?• 50% building stock not antiseismic• predicted 400,000 deaths.
Elements of vulnerability and resilience of historic buildings in IranContrasting Sinān with Bahā al-dīn al-Āmilī
Islamic architecture and dynamic hazards • domes and vaults: heavy and rigid • arches: shallow and round-headed • minarets: tall, slender and fragile = rigidity, spreading stress distribution, high centre of mass.
Mitigating factors in Iran• widespread use of acute arch (stress distribution more contained)• high quality of masonry and design• use of flexible, energy- absorbing wooden spacers.
An unknown quantity...
Problems ofEnvironmental Protection
Where theres no sign of hope in the desertSo much hope still lives inside despairHeart, dont kill that hope,Even willows bear sweet fruitIn the garden of the soul.Maulana (Jalāl ad-Dīn Muhammad Rūmī)Kolliyat-e-Shams-e-Tabrizi
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