The development and realisation of this full-scale, one-to-one prototype of the first layer of NEST HiLo's thin concrete shell represent a key milestone for the project, demonstrating the viability of the proposed lightweight, flexible formwork to form a complex concrete surface structure.
The purpose of this experiment is to investigate
- the engineered material system, bespoke sprayed concrete and tailored carbon-fibre reinforcement mats, to achieve the extreme geometry of the shell;
- the logistics, including sequencing of construction, involved in scaling up the concept of a tensioned flexible formwork;
- the effectiveness of the control algorithms, supported by point-cloud scanning, developed to map the flexible formwork to the designed target geometry;
- the quality of the resulting architectural concrete on the thin and large surface structure.
Professional partners have been brought together to mimic real-life conditions so that the feasibility of this extreme construction innovation can be assessed.
DESIGN AND ENGINEERING
ETH Block Research Group [BRG]
ETH Chair of Mathematical and Physical Geodesy
ETH Automatic Control Laboratory
Marti [general contractor]
Bürgin Creations [concrete works]
Bruno Lehmann [rods + cable net components]
Blumer Lehmann [timber]
Dafotech [steel supports + plates]
Bieri [fabric cutting + sewing]
NCCR Digital Fabrication