HEDRON.
Fish From the Sky With Diamonds. Geodesic Hydroponic - Aquaponic Farm.

Hedron (2011) is an aquaponic rooftop greenhouse designed to enable food production on generic flat roofs without requiring structural modification of existing buildings. The project addresses one of the main constraints of rooftop agriculture: the concentration of loads associated with water tanks and farming equipment.

Through the use of a geodesic dome structure, the weight of the fish tanks is distributed across a larger surface area and transferred to the perimeter of the greenhouse frame. This structural strategy allows the system to be installed on a wide range of rooftops, expanding the potential sites for urban food production beyond purpose-built facilities.

The greenhouse is optimized for aquaponic farming techniques, in which fish and plants operate within a closed ecological loop. Water enriched by fish waste nourishes the plants, while the plants simultaneously filter and clean the water before it is returned to the fish tanks. This reciprocal system enables the continuous production of vegetables and fish within a compact footprint.

Hedron integrates a passive cooling and ventilation system designed to reduce energy consumption while filtering polluted urban air. By preventing direct exposure of the crops to airborne contaminants, the greenhouse establishes a protected growing environment within the dense urban atmosphere. The system is estimated to produce up to ten kilograms of fresh crops per day, sufficient to support the dietary needs of multiple households year-round.

Rather than proposing a singular architectural object, Hedron operates as a transferable structural system. By relocating cultivation to the upper surfaces of existing buildings, the project extends the urban repositioning of food production into a distributed rooftop infrastructure. It anticipates a dimension later formalized within Epistemic Design: spatial and structural decisions reorganize ecological, social, and economic relations rather than merely accommodating them.

Displace — Hedron displaces agriculture from horizontal ground-based territories to the vertical surfaces of the city. By relocating food production onto rooftops, the project challenges the historical separation between agricultural land and urban development, redefining buildings as active sites of cultivation rather than passive containers.

Expose — The project exposes the technical, environmental, and structural constraints that have traditionally limited rooftop farming. By addressing load distribution, air pollution, and climatic control through design, Hedron renders these constraints explicit and negotiable rather than hidden obstacles.

Mediate — Hedron mediates between structural engineering, ecological cycles, and domestic consumption by translating complex environmental systems into a compact and repeatable architectural framework.

Activate — Hedron activates underutilized rooftops as productive infrastructures capable of supporting food systems and ecological cycles. Activation occurs at the level of possibility: buildings are re-read as latent agricultural sites embedded within the urban fabric.

By combining structural redistribution, aquaponic cycles, and environmental control, Hedron frames rooftop agriculture as an infrastructural question rather than a stylistic or technological novelty.