Five things you need to know about Building 2's construction
With the project to transform Building 2 into a dynamic student and research hub gaining ground – quite literally – construction is becoming daily more visible.
So what is happening on site and what does it mean?
1. We’ve reached ground level
Pouring the level 4 ground floor slab may not sound like a reason to celebrate, given this is a 17-level building, but believe us it is. The eight-week project involves four separate concrete pours, 64 concrete trucks and hundreds of cubic metres of concrete. When it’s complete, the slab will contain 8100m of reinforcing steel tendons – each stressed to a force equivalent to the weight of a fully loaded Boeing 737. Laid end to end, the tendons would stretch from Ultimo to Bondi, as the crow flies.
2. Scaffolding is sprouting
Along with the rising jump form, the appearance of scaffolding along the Broadway perimeter of the construction site is a strong signal that this build is heading in the right direction: up! This scaffolding will eventually span levels 5 to 8 and serve to protect the edge of the lower podium levels of the building during construction. The scaffolding installed so far is guarding formwork being erected ahead of concrete pours for the first section of the level 5 slab.
3. Don’t truck with the trucks
For efficiency, concrete trucks are now entering the work site via Broadway, from 7am weekdays and from 7.30am Saturdays, while continuing to exit via Jones St. At these busy times, there may be as many as 11 truck movements an hour, with an average of around six an hour. Fortunately, the impact on Broadway’s pedestrians has been minimal, thanks to a well-oiled system that sees truck drivers calling on approach so they can be whisked quickly inside the work site. If a traffic controller does halt the pedestrian flow for a truck to enter, please be patient and stay safe – any delay will be a mere matter of seconds – perhaps as few as the seven seconds that was all it took to hurry a long concrete truck inside during a trial run.
4. Pillars of strength
The twisting structure of the building is a key feature of the design – and something of a conundrum for the construction team. As the Building 2 tower ascends, the floors shrink in size to produce the twist, supported by sloping columns reminiscent of the Dr Chau Chak Wing Building, which is said to have only one straight column. Ensuring these 113 ‘raking’ columns in the Building 2 structure, maintain their shape and strength during pouring and curing is a work in progress. Trials are currently underway on site using durable tubes with a foam core to help the concrete maintain its shape during the curing process, with a vibration stage to remove air bubbles.
5. Sustainable construction
UTS Central construction continues to showcase is green credentials, with almost 93% of waste materials sent for recycling during August 2017 and 94% recycled over the project to date. This includes around 35 tonnes of concrete recycled during August, 15 tonnes of timber and almost 4 tonnes of metal. Approximately 248 tonnes of waste was recycled during the month – equivalent to the weight of about 10 rhinoceroses. Some may recall that strip-out of the original Building 2 in 2016 saw tonnes of furniture and equipment repurposed, while more than 1600 desks and chairs plus other items were donated to the Cook Islands Ministry of Education – enough to refurnish five primary schools.
- Installation of facade, services and internal finishes commences – April 2018
- Topping out – late 2018
- Building commissioning commences – May 2019
- Building 2 complete – mid 2019
Visit the UTS website or Staff Connect (staff only) for further information on this and other projects. For enquiries about this project or the contractors, please contact firstname.lastname@example.org.