Aligra, a project presented by the team comprised of Straddle3, Societat Orgànica, Aiguasol, Tallfusta, and Tejido, was awarded first place by the challenge's selection committee.

The Aligra project is an integrated prefabricated construction system based on two-dimensional (2D) elements made of wood and wood-derived products. It is an open-source system that translates into a generic system adaptable to any construction situation. The main characteristics that define the Aligra system are its economy of means, modularity, lightness, ease of assembly, use of ecological materials, and flexibility.

Construction System

The prototype is structured with a first floor, where a bioclimatic gallery has been created adjacent to the existing house, and a second floor, with a habitable space annexed to the house.

It consists of the volume expansion kit, the bioclimatic envelope kit, the cistern kit, the photovoltaic kit, and the smart building kit.

Lightweight, modular, dry-assembled, demountable, and reusable micro-laminated timber structure.
Rainwater harvesting system for irrigation, with optional filtration for other building uses, controlled by a smart microcontroller. Thermal transmittance (U-value, W/m²K) of the building envelope to reduce energy demand. Productive plant beds to increase biodiversity and promote local consumption. Modular photovoltaic panel system with the option to create an energy community.
Sensors for measuring environmental, water, and energy performance.