Iran-Water Resources Research

Iran-Water Resources Research

Developing an Urban Flood Loss Functions for Residential Buildings (Case Study: Rasht City)

Document Type : Original Article

Authors
1 Water Engineering Department, Faculty of Agriculture and Natural Resources, Imam Khomeini International University, Qazvin, Iran.
2 Water Resources Monitoring Department, Environmental Research Center, Jihade Daneshgahi, Rasht, Iran.
Abstract
Floods in urban areas are always associated with casualties and economic losses. While estimating the amount of flood loss for all contents of a residential building is very important, the existing models only estimate the amount of direct damage caused to the building structure and then, the damage caused to the movable content of the building is assessed as a percentage of the damage to the structure. Considering the inaccuracy of the existing models and since no research has been done in Iran on that, in this research, determining the amount of direct loss of the contents of residential buildings, both movable and immovable, has been considered in full detail. The study was carried out in five neighborhoods with various economic levels in Rasht City, and through a questionnaire filled by 381 people living in the study area, the value of the household items and appliances were evaluated at the current price. Finally, the flood depth-loss curves for all movable and immovable items were presented and the results were compared with the results obtained from the loss functions used in other countries. The average loss calculated by the developed model was lower than the global models up to a depth of one meter and higher from this depth onwards. This indicates the need to produce loss functions caused by urban flooding at the national level. The method used in this research and the developed dimensionless loss functions are recommended for many similar urban areas in Iran.
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  • Receive Date 04 June 2023
  • Revise Date 24 August 2023
  • Accept Date 02 September 2023