ROOF ITERATIONS: ETFE SHELL

ETFE shells are lightweight in nature and do not require as many columns between spans to hold them up compared to conventional glazed atriums. This lower footprint is one of the main reasons ETFE was chosen over conventional glass systems.

TYPOLOGY 1: PITCHED ROOF TYPOLOGY 2: GRID SHELL

ERECTING A PITCH LINE supported by truss frames allows for alight oculus to be installed along said pitch line. This gives a heightened feeling of lighting below, giving users a strong wayfinder while promoting ample thermal gains on the atrium’s trombe mass.

A LIGHT OCULUS: Using glazed panels adjacent to the fritted ETFE cushions gives a heightened lighting over any high circulation spaces, great for wayfinding.

LIGHT OCULUS IN DETAIL: utilises a reflective surface to further disperse light over the entire atrium, better lighting the space without any glare coming through.

VAULTED SHELL ADDS STRUCTURAL STRENGTH, allowing for a double-layered ETFE roof.

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VENTILATION ISSUES WITH A GRID SHELL

SUMMER AND WINTER USE OF A

LIGHT OCULUS: Using glazed panels adjacent to the fritted ETFE cushions. An alternative to keep material systems consistent would be to use clear ETFE cushions.

Such allows sunlight to fall incident onto the atrium below unfiltered and not blocked by any fritted surfaces. Paired with a reflective surface, the additional stronger lighting would be over general walking space to act reinforce itself as a wayfinder. Additionally, such beams of sunlight should be clearly incident on the atrium’s trombe mass for the best passive thermal strategies.