Heaven 17 : hybrid timber tower

May 2024
A green worldview, emphasis on circular economy principles, energy efficiency, innovation and the smallest possible CO2 footprint — all requirements of the international architectural competition for a residential tower and integrated urban public space, for a city-centre site in Tallinn, Estonia. We collaborated with Studio Woodroffe Papa, Alver Arhitektid, Studio Weave and XCO2, and we are very pleased to announce that the resulting design has been awarded third place.

The competition attracted 87 international entries, with eight teams going forward to concept design. Many congratulations to winners Naço Architectures and Arhitektuuribüroo Eek & Mutso, and second place team Gensler with Arhitekt 11.

Heaven 17 Tallinn tower
Heaven 17 : third place in the Tallinn tower international architectural competition | image : Studio Woodroffe Papa

Heaven 17 Tallinn tower
Heaven 17 : timber/concrete tower construction sequence

The timber/concrete tower is 124m high plus three basement levels, and provides 103 apartments. Concrete is used for the below ground structures, and for the building’s central core, which provides lateral stability. The core supports concrete slabs and external steel bracing. Mass timber columns and floor slabs are then constructed around the core, with mass timber infills between concrete transfer slabs. External corners are hung from the steel bracing.

competition organised by : Elon T17 OÜ in cooperation with Elon OÜ
Heaven 17 collaborators : Studio Woodroffe Papa, Alver Arhitektid, Studio Weave, Whitby Wood, XCO2