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Fairfield General Hospital, Rooftop Extension

Client: MTX Contracts

Completed: 2020

We were appointed by MTX Contracts to provide the MEP RIBA Stage 4 detailed design for a new modular roof top extension. The rooftop extension was located on a building containing acute accommodation and general wards which all remained fully operational throughout the construction period.  We undertook complex phasing of the engineering services to minimise disruption to the clinicians and patients. The new extension comprises additional welfare accommodation, including staff offices, interview rooms, changing rooms and toilets.

The modular extension unit utilises hybrid ventilation consisting of high-efficiency heat recovery units, extract fans and natural ventilation. Heating and cooling are provided by air source heat pumps supplied with electricity from new distribution boards. Low energy LED lighting is arranged throughout complete with sensors and scene-setting controllers. The domestic services connect locally into the hospital’s main domestic water services infrastructure. Drainage to the new modular unit was achieved by the installation of new drainage stacks mounted on the exterior façade of the hospital which connect to below-ground drainage in the courtyard below.