On course to be the tallest building of its kind, Dalston Lane is a 121 unit residential development in Hackney, UK. Estimates show that it will use more timber than any other scheme in the world, making it, by volume, the largest Cross Laminated Timber (CLT) project globally.
CLT boasts many material benefits, not least its sustainability. In total, Ramboll’s CLT experts have calculated that Dalston Lane will save 2,400 tonnes of carbon, compared to an equivalent block with a concrete frame. By using CLT construction, the embodied carbon is 2.5 times less than that of an equivalent concrete frame. Taking into account that timber stores carbon by absorbing carbon dioxide (CO2) from the atmosphere, also known as sequestered carbon, the structure can definitively be considered as carbon negative. Its 3,852 cubic metres of CLT will entirely make up the external, party and core walls, floors and stairs.
High Speed 1 and Crossrail pass under the building site, making the choice for CLT unequivocal with its lighter construction weight that enabled smaller foundations and a further two storeys of accommodation on to the building.
Ramboll has carried out full structural engineering and the design of the 33m CLT structure, which necessitated the development of bespoke tools, details and techniques, where Ramboll engineers drew on their decade of experience in pushing the boundaries of this dynamic material. Working with specialist timber subcontractor B&K Structures, a series of technical challenges were overcome, to ensure an efficient, buildable and highly coordinated solution.
Dalston Lane will join a number of other timber buildings in the area thanks to The London borough of Hackney’s ‘timber first’ policy established in 2012, making this central London borough a world leader for timber construction.
Ramboll Director and CLT expert Gavin White comments: “It is exciting to see this milestone project get out of the ground. The height and size of the Dalston Lane building shows how versatile CLT is, as well as its potential in leading the future of sustainable construction. We have been working on CLT projects for over 10 years now, so it’s heartening to see Hackney actively encouraging CLT construction, and we look forward to completing what will be a landmark building.”