The 90 Long Acre redevelopment scheme consists of a major refurbishment and extension of the existing 1980s building. The development is an 8 storey building comprising 20,988m² (NIA) of office area and 1,903m² of retail (A1,D1,D2 and SG) area located on lower ground – and upper ground floors.
The office HVAC consisting of a mixed-mode design with openable façade elements allowing for natural ventilation and cooling when available to the perimeter zones. Hot water for space heating is provided by air source heat pumps and chilled water for cooling is generated via air cooled chillers. Multi function heat recovery air source heat pumps are utilised during simultaneous heating and cooling conditions for high efficiency operation.
The building Africa House along Kingsway near Holborn Station has been refurbished to offer 119,297ft² of high quality office accommodation, for which Watkins Payne supplied building services engineering, vertical transportation engineering, BREEAM duties and energy consultancy to achieve an EPC C rating.
Princes Arcade in St James’s is part of the Grade II listed building within which a major new restaurant unit has been created along with office, core and atrium refurbishment.
Sustainability is incredibly important for the Client and as such the building is targeting BREEAM ‘Outstanding’, WELL ‘enabled’ Gold, alongside WiredScore Platinum. In addition, the Design for Performance approach is being adopted in order to minimise operational energy and hence carbon emissions.
Apex Tower located next to New Malden train station is a 15-story office development. At ground level an enlarged prestigious reception area is provided which leads to commuter facility with unisex showers and drying room. The refurbishment works is targeting BREEAM RFO ‘Very Good’ and achieved an Energy Performance Certification rating of ‘B’.
Watkins Payne reviewed a number of mechanical and electrical options with the team, focusing on retention of key central plant, overhaul and replacement of plant where required, and LED lighting to reduce energy and improve the office environment.