ESE Auckland – Case Example in Reinforced Concrete Design – Complex Components

SESOC Emerging Structural Engineers Network invite you to the above presentation being delivered in Auckland in April.

Wednesday 3 April 2019
University of Auckland – Faculty of Science, 302-G20
Networking from 5.30pm, Presentation from 6pm followed by food and drinks

Presented By Andrew Thompson – Technical Director at Holmes Consulting.

This event will use a case example to showcase a range of interacting behaviours, design considerations and staging issues in concrete component design – illustrating a few of the key skills expected of a competent design engineer in reinforced concrete design.

The case example used will be the design of a series of conventional (non post- tensioned) reinforced concrete transfer beams in the Commercial Bay development. The transfer beams span over the CRL tunnel, and are used to support basement structure and columns from parts of both steel framed and concrete framed buildings above, which form part of the low rise retail component of the development. Whilst the example chosen may be a seemingly innocuous part of a project which delivered numerous greater challenges elsewhere, it is a convenient way to step through a few different aspects of reinforced concrete design. This includes:

• What are “deep beams”?
• Conventional plane sections bending/shear theory, versus strut and tie
• Seismic design actions (including SESOC guidance recommendations)
• Composite sections (for unpropped construction)
• Calculation of deflection
• Consideration of shrinkage and creep
• Staged construction considerations (and how these considerations differ in concrete and steel construction)
• Pour sequencing and pour methodology for flatness and levelness
• Management of sensitivity/uncertainty
• Crack control from applied loads
• Early age and thermal cracking in concrete
• Roles and responsibilities in design and construction, and communication

Opportunities will be taken where possible to touch on some of the wider applications of the above considerations (beyond the case example), and the literature/methods available to tackle them. It is hoped that attendees will leave with an enhanced awareness of potential considerations required in areas of reinforced concrete design, other than seismic.