The glulam laminated timber frame is being erected by Clugston Construction and CNIM for the construction of a new recycling and energy recovery facility for the city council.
The waste to energy plant is being built by Clugston and French process engineer CNIM for Veolia Environmental Services, which has a £460m 25-year privately-financed waste management deal with Leeds City Council.
Supplied by German timber frame specialist Hess Timber, the arched design will stand 42 metres high and will be 123 metres long and 35 metres wide when assembled.
Clugston Construction project manager Tony Wing said: “The fact that this is the largest timber frame ever erected in the UK really highlights the overall size of the project and how unique and important the facility will be for Leeds.”
Completion is scheduled for summer 2015.
An artist's impression of the finished building is below.