News bulletin-48:
News bulletin-48: 4 Dec 2018


Rob Kilgour, WSP Principal Engineer for Materials Technology, explores the balancing act required in defining requirements for tunnel material durability performance to help extend the life of tunnel assets. And in other news, WSP has won the 2018 Global Road Achievement Award for Design for the Waterview Connection in NZ (pictured).

Belgian construction giant BESIX Group SA has acquired a controlling interest in Watpac of more than 50%, with the intent to grow Watpac's earnings and shareholder value.

Westkon Precast in Melbourne has installed a Universal Concrete Extruder with eight different tube and mould sets for the manufacture of hollow core slab 1.20 m in width and 15 to 50 cm in height.

Building contractor, Halikos, has been announced as the successful tenderer for the $12.6 million first stage Northern Territory public school at Zuccoli which will support 120 construction jobs over the coming year.

Austroads has published a report that outlines a framework to help assess the value of maintenance and renewal works, consistent with capital investments. The organisation has also released its 2017-18 annual report.

This concrete house has much more than meets the eye, according to CCAA, with the choice of concrete's chief characteristic that formed the choice for the building.

News bulletin 48:
News bulletin 48: 5 Dec 2017


Many pedestrian bridges have experienced dramatic vibrations and wobbling when crowds have tried to cross them, e.g. the London Millennium Bridge began to sway on its opening day in 2000 and had to be closed while the Squibb Park Bridge in NY bounced sideways as pedestrians crossed in 2014, not reopening until this year. This movement could be reduced by using biomechanically inspired models of pedestrian response to bridge motion and a mathematical formula to estimate the critical crowd size at which bridge wobbling begins, according to a study by Georgia State University.

Institute Silver Member Cardno has received an Urban Design Award along with joint entrants John Graham and BVN for the Gold Coast Sports and Leisure Centre. Cardno provided civil engineering, hydrology, landscape and geotechnical consulting. Other consultants on this project included Bligh Tanner, ARUP, Hansen Yuncken, and Aurecon.

Following the failure of the Oroville Dam spillway in the US earlier this year, construction engineering firm Kiewit was hired by California’s Department of Water Resources (DWR) to rebuild and reinforce it. However hairline cracks were detected in October when curing coverings places over the erosion-resistant concrete slabs were removed. The DWR investigated and explained the cracks were the result of “some of the design elements” and “are not abnormal” however not everyone agrees.

A development application has been lodged for a 55-storey commercial tower between George and Pitt Streets in Sydney by new Institute Gold Member, Lendlease. The development will include a mixed-use podium, public spaces and expanded laneways. Lendlease has also partnered with one of Japan’s largest property companies to work on Melbourne Quarter’s first residential building, the 44-storey East Tower.

On the Forrestfield Airport Link in Perth work is underway at Wright Crescent to build an emergency egress shaft. 35 linear metres of D-walls that are up to 36 metres deep are expected to be constructed in two months.

Image: Thomas Porostocky via Georgia State University.