Thesis Defense - Ahmet Buğra Ceyhan (MSCE)

Ahmet Buğra Ceyhan – M.Sc. Civil Engineering

Asst. Prof. Dr. Derya Deniz – Advisor

Date: 10.08.2022

Time: 14.00

Location: AB1 245

“Flood Loss and Retrofit Analyses for Residential Buildings”

Asst. Prof. Derya Deniz - Özyeğin University

Asst. Prof. Senem Seyis - Özyeğin University

Prof. Dr. Cevza Melek Kazezyılmaz Alhan - İstanbul University

Abstract:

Flooding events are the most frequent natural disasters that cause significant physical damage on the built-infrastructure, leading to severe economic losses and social disruptions in communities. To measure and increase disaster resilience of communities, reliable assessment of direct physical losses (i.e., repair cost and time associated with flood damage) of building structures under the hazard actions is the first main and essential ingredient. To mitigate disasters effectively, sophisticated analysis tools are also needed to support citizens to give risk-based decisions on disaster retrofit actions.

This study presents an assembly-based framework that first develops models to estimate physical flood losses for typical single-family and multi-family residential buildings in Europe, with a focus on houses in UK. Considering several residential buildings with or without basement, flood damage potential of each nonstructural and content components of the buildings are examined for various flood depths. Relative losses associated with flood-repair cost and time for each damaged component are obtained considering the individual failure limit of the component. Next, all components are assembled to estimate the total losses on houses in terms of both repair cost and time. Furthermore, this study performs benefit analyses on flood-retrofit approaches to find the optimal solutions minimizing the associated losses.

Results show that water-contact can give severe damage and losses on non-structural and content items. Also, retrofit actions are found to give more effective reductions in losses and repair times if the key ones are applied together, comparing to their effectiveness as an individual action.

Bio:

Ahmet Buğra Ceyhan graduated from the Civil Engineering Department of Gaziantep University in 2019. In September 2019, he entered the Graduate School of Engineering at Özyeğin University to pursue his MS Degree in Civil Engineering under the supervision of Asst. Prof. Dr. Derya Deniz and started his teaching assistant duty meanwhile. His research interests are flood loss modelling and cost-benefit analysis of flood retrofit options for non-structural elements of residential buildings.