Construction of the tallest timber building in Australia will go ahead in Brisbane, following a deal between developer Lendlease and the Impact Investment Group (IIG).

The building, known as 5 King, was acquired by IIG in its second commercial building acquisition in the $2.9 billion Brisbane Showgrounds redevelopment.

At a height of almost 45m, 5 King will be the tallest engineered timber building in Australia and the tallest and largest engineered timber office building by gross floor area in the world.

The innovative building will be the future home of global engineering firm Aurecon, with the company committing to lease four of the nine office floors.

Designed by architect Bates Smart and with engineering services provided by Aurecon, the ground plus nine-storey tower includes three bespoke ground level retail tenancies.

5 King will be built using a revolutionary building timber called cross laminated timber (CLT) and glulam (glue laminated timber), which has a structural strength akin to the traditionally used concrete and steel.

The typical commercial floor plate will comprise 1,588m2 of net leasable area (NLA), with a total area of 14,921m2 (NLA) over 10 levels.

Kylie Rampa, Lendlease’s Chief Executive Officer, Property, Australia said Lendlease was extremely proud of its partnership and collaboration with IIG and Aurecon to deliver the next generation of sustainable workplaces in Queensland.

“5 King is the latest example of high-performance workplaces setting new benchmarks in environmentally sustainable building practices.

“The office building will offer tenants the opportunity to generate significant business benefits through large, efficient floor plates that provide flexibility for a variety of modern workplace formats.”

Buildings made from engineered timber have a lower carbon footprint than other building materials as the production process produces zero waste, and timbers are sourced from certified sustainably-managed forests.

5 King will feature exposed timber structures, and large glass areas will maximise natural daylight, while sunshades on selected facades will reduce energy consumption; further reducing the building’s carbon footprint.

Aurecon’s Queensland Regional Director, Neil Barr, said the use of timber to lower the carbon footprint was a medium that Aurecon had used to good effect.

“Aurecon has been closely involved in providing structural and building services engineering design for 5 King, and has taken an active role in reducing building costs through digital design and modularisation,” Mr Barr said.

“Our firm has long seen timber as a viable alternative to steel and concrete and 5 King will showcase the strength of CLT in a ten-storey building.”

Lendlease is committed to achieving sustainable solutions with 5 King targeting a 6 Star Green Star Design and As Built v1.1 and a NABERS Energy 5 Star rating. The tower is serviced by 56 car parks over one basement level, and has 152 bike racks, 16 showers and 158 lockers.

5 King is due for completion in November 2018, with Lendlease both developing and building the asset.

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