Specialist know-how: Ultralight, Flexible Formwork System for Thin, Textile-reinforced Concrete Shells

© Michael Lyrenmann / ITA der ETH Zürich
© Michael Lyrenmann / ITA der ETH Zürich
© Naida Iljazovic, ITA der ETH Zürich
© Naida Iljazovic, ITA der ETH Zürich
© ITA der ETH Zürich
© Naida Iljazovic, ITA der ETH Zürich
© Naida Iljazovic, ITA der ETH Zürich
© ITA der ETH Zürich
HiLo is a research and innovation unit for lightweight construction and smart and adaptive building systems. It is a two-storey innovation hub and collaborative working space that will be built in 2018 on NEST, EMPA’s modular research building in Dübendorf, Switzerland.

The roof of the unit is a double-layered, doubly curved, carbon-fibre-reinforced concrete shell structure with integrated hydronic heating and cooling, and a thin-film photovoltaic system on top.

With a total height of 7 metres, the roof covers an area of 120 square metres and has a total surface area of 160 square metres. A full-scale prototype of the bottom layer of the concrete roof was built in the Robotic Fabrication Lab of the Institute of Technology in Architecture at ETH Zürich as a dress rehearsal for its innovative construction system.