Design & Detailing for Extreme Events

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Wednesday, 26 April 2017
5:00 PM - 8:00 PM


Ryde-Eastwood Leagues Club
117 Ryedale Road , West Ryde NSW 2114


Extreme events encompass a range of phenomenon. With the rise and speculation surrounding climate change and noticeable shifts in various aspects of regional, metropolitan and rural environments, a range of practitioners must be aware and understand the implications this has on important design and detailing aspects.

In order to ensure maximum safety and durability of concrete structures, compliance, understanding and knowledge is essential to deliver best practice outcomes.


CIA Members $75.00 CIA Retired & Student Members $44.00 Non-Members $99.00


Mr. Doug Jenkins
Managing Director - Interactive Design Services

Dr. Damith Mohotti
Lecturer - Civil Engineering - The University of Sydney

Mr. Eric Lume
National Engineer - Steel Reinforcement Institute of Australia


Design for Extreme Events
Coping with Conflicting Demands; Limit States, Legislation and Black Swans
Mr Doug Jenkins - Interactive Design Services

Building design codes are largely based on the statistical analysis of expected variation in materials and loads, to arrive at procedures that will ensure a very low risk of failure under the greatest expected loads and most severe expected conditions.  Recent “Safety in Design” legislation on the other hand requires that all risks must be removed or minimised “so far as is reasonably practicable”. 
In this presentation Doug Jenkins will provide an overview of current code requirements, including inconsistencies between the standard limit state design approach and legal requirements, and discuss ways in which structures can be designed and detailed to cope with unexpected extreme events without collapse.

Design structures to withstand extreme loadings: Blast and Impact 
Dr Damith Mohotti - The University of Sydney

Demand for protective measures in civil and military structures are rising. The budget a government needs to spend on improving the performance of critical infrastructure is significant and is a large portion of the national income. In the 2016 Defence White Paper, the Australian government has emphasised the importance of improving the national research capability in security. Other than defence related events there are many other instances where blast and impact loads causes significant damages to the community such as vehicle crashes, destruction caused by flying objects during storms and gas explosions. Blast and impact-induced destructions can be viewed as two of the most severe structural damages that any structure can experience during its lifetime.

Design for events such as blast and impact has become an extremely difficult task due to the rate of loading, unpredictability in magnitude, and extreme non-linearity in material behaviour. Concrete and steel are two of the most commonly used materials that are used in protective structures. Even though these materials have been used for centuries still there is no clear understanding on how to use them efficiently in the design of protective structures. It is imperative to understand concepts such as material non-linearity, strain rate effect, energy absorption and high ductility and design for plastic deformation.

The damage mitigation process involves development of new material systems, application of protective layers and use of other mitigation techniques to reduce the damage caused to the structures. Rapid development of computer technology and the advanced finite element softwares gives Engineers a better ability in achieving reliable design solutions.

In this presentation, key aspects of designing a structure for blast and impact loadings will be reviewed. Also new technological developments in mitigating blast and impact induced damages will be discussed.

Reinforcement Detailing for Seismic Events
Mr Eric Lume - Steel Reinforcement Institute of Australia

The presentation covers some of the primary reinforcement detailing issues to provide reinforced concrete structures with the important ductility required to survive extreme events such as earthquakes.

Topics covered include the earthquake risk in Australia, importance of ductility, difference between designing in accordance with the body of AS 3600 and Appendix C, some lessons learnt from Christchurch, the importance of drift compatibility and a brief overview of some of the seismic provisions in the new Royal Adelaide Hospital.


4.45 pm
Event Registration Commences
5.15 pm
Welcome and Introduction
5.20 pm
Presentations Commence
7.00 pm
Discussion and Question Time
7.15 pm
Drinks and light refreshments will be served
8.00 pm Close

Communication Devices

Please note that audio and video recording or taking photographs is prohibited during this event without express approval from the Concrete Institute of Australia.

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Terms of Service.