Case Study

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One Benjamin Street, London

London, UK

The new build offers 1692 sq. m. high quality office space with highly flexible, column free floor plates, with internal floor to ceiling heights of 1.8 m.

Total Area

1692 sq m

CAM-V Direct Expansion, Underfloor supply air and high level return air

2019 New Build

One Benjamin Street is a fabulous new build situated directly opposite Farringdon Station in the Clerkenwell Conservation area of London, offering mixed use accommodation, comprising retail, commercial space over floors 1 -3, and residential penthouse apartments.

Designed by leading architects, AHMM, the new build offers 1692 sq. m. high quality office space with highly flexible, column free floor plates with internal floor to ceiling heights of 1.8m.  The design brief was to provide optimum flexibility for incoming tenants and future reconfiguration, and underfloor air conditioning was recommended by Main Contractor Knight Harwood as a flexible services option that could satisfy this requirement.

The system specified was a CAM-V Direct Expansion system with conditioned air supplied via the underfloor plenum, and return air received back via high level transfer grilles.  Each floor is divided into 2 zones, with each zone served by a CAM-V33 downflow unit.  A total of 105 TU4-EC Fantiles are evenly distributed across the six zones to supply the conditioned air from the underfloor void into the workspace.

The CAM V system offers floor supply with ceiling void or high level space return. It is a Variable Volume System. This system is well used throughout the UK and is best suited to open plan areas. Consultants like the use of the raised floor as a total supply plenum but later when fit outs occur care must be taken to arrange return air paths at high level, sometimes with cross talk attenuators for privacy room to room. CAM V Systems can be supplied with DX Heat Pumps or with Chilled and Heating water options.

The alternative is our CAM C system offering Floor supply/Floor return doing away with high level return and associated transfer grilles and attenuators. It is a Constant Volume System. The floor void is divided into supply and return channels and these channels are created at CAT A taking account of where Partitions might be positioned in the future, to avoid the immediate need for reconfiguration at CAT B fit out stage.

The building was completed early 2019 and its characteristic Victorian styling has made a significant contribution to the Farringdon streetscape.

Architect – AHMM

Developer – The Girdler’s Company

Main Contractor – Knight Harwood

M&E Consultant – Scotch & Partners

M&E Contractor – Working Environments Ltd

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