Arup's Istanbul office hosted CTBUH Turkey for their Seismic Resilience Buildings seminar, which kicked off with an hour-long networking reception.
CTBUH Turkey Representative Mehmet Kılıç, Country Director (Turkey), Turner International, kicked-off the formal program with a brief introduction to CTBUH.
Prof.Dr. Sinan Akkar, Board Member, Turkish Earthquake Foundation, discussed resilience and performance-based rating approaches from the Turkish Earthquake Foundation perspective.
Ceyhun Eren, Ph.D., Head of Allianz Teknik & Risk Engineering, Allianz Turkey, explained probable maximum loss estimation (PML) as a risk-based approach to seismic vulnerability and its impact on insurance rates.
CTBUH Future Leaders Committee Co-Chair Turkey Dr. Emre Toprak, Senior Structural Engineer, Arup, introduced the REDi framework for resilience-based earthquake design and downtime assessments, which also considers delays between the earthquake event and the initiation of repairs.
April 17, 2019
Guests from a variety of disciplines attended the seminar and expressed enthusiasm at being able to hear seismic resilience strategies and presentations.
In the first presentation, Prof. Dr. Sinan Akkar, Board Member, Turkish Earthquake Foundation, initially reviewed the evolution of performance-based seismic design approaches with a retrospective look, remarking that with present-generation discrete performance levels there is no clear indicators about economical/social consequences of the performance assessment. He emphasized that with FEMA P58, new-generation performance assessment approach, seismic performance measures are now expressed as casualties, repair cost and repair time. Then he explained the aims of Turkish Earthquake Foundation to establish a system like USRC and REDi resilience-based rating approaches and further required actions for the implementation.
Next, Dr. Ceyhun Eren, Head of Allianz Teknik & Risk Engineering, Allianz Turkey, explained probable maximum loss estimation (PML) as a risk-based approach to seismic vulnerability and its impact on insurance rates. He expressed that current system asks insurers have to estimate the premiums rapidly without having detailed information on the building characteristics and vulnerabilities. He briefly summarized their in-house methodology to calculate Earthquake PML by using structural performance analysis and structural health monitoring system which they have installed to Allianz Tower Building. He then emphasized that there is also lack of awareness both on people and the industry on how to react during an earthquake and what precautions to adopt beforehand. He also introduced Allianz Teknik Earthquake & Fire Testing and Training Center Project in which both academic and industrial seismic testing for both structural and non-structural components together with tests for transportation risks, reaction to fire testing and also hands-on training services will be executed by aiming to increase public awareness, as well. He lastly informed that the center will be officially opened by the end of this summer.
Following his presentation, Dr. Emre Toprak, Senior Structural Engineer, Arup introduced REDi resilience-based rating system. He summarized the impeding factors which causes delays between the earthquake event and the initiation of repairs. He emphasized that to achieve a truly resilient facility, it is necessary to satisfy mandatory criteria under organizational, building and ambient resilience categories. In addition, a downtime and loss assessment must be performed to verify the adopted resilience objective. Then he presented example case project 181 Fremont, the first building to achieve REDi Gold. Downtime and loss assessment can also be used on existing buildings to understand the current risk and to develop a resilience strategy to mitigate it. This recently been applied to whole campus of University British Columbia in Vancouver, Canada.
The seminar is concluded with a panel discussion with all participants involvement. Attendees expressed their views on resilience and asked questions on the further incentivization strategies for sectors.
The event was organized by CTBUH Turkey Future Leaders Committee Co-Chairs İlayda Öner, Business Development Engineer, Turner International, and Emre Toprak, and CTBUH Turkey FLC Membership Manager Burak Yılmaz, Founder, MBY Engineering.