Kings College London – Strand Campus Phase 2B

Refurbishment of the existing top three floors, levels 6, 7 and 8 of the Kings College Strand building and a new link corridor from the Strand building to the Kings building at levels 6 and 7.

MJN Colston Ltd carried out the Mechanical, Electrical and Plumbing services throughout the refurbished areas. All floors were provided with an active four pipe chilled beam installation, the chilled beams providing cooling and heating facilities as well as having integral lighting modules.

Chilled water is produced from two new roof mounted packaged air-cooled chiller units, complete with primary pumps. CHW is distributed via secondary pumps serving distribution mains to the chilled beams, which are controlled from two port modulating valves, and a new roof mounted air handling unit. The AHU provides the primary means of cooling and tempered air to the 4 pipe chilled beams.

Heating to the areas is provided through the 4 pipe chilled beams, controlled from two port modulating valves. The heating circuit is derived from the existing College MTHW primary boiler circuit which feeds two new plate heat exchangers and inverter driven pump sets, located in a new plant room at Basement level -3.. A new LTHW circuit distributes to the floors via a central riser.

The electrical installation consisted of power, lighting and data throughout the floors. A 400A low voltage rising busbar system was installed in existing risers, supplied from the existing College 1250A busbar, via 400A HRC tap-offs. Separate lighting and small power distribution boards were installed with-in the electrical risers on all three floors, fed from 125A MCCB tap-offs.

All final circuit small power cabling was run with-in floor voids to serve under floor power tracks suppling power and data floor box outlets. The data systems utilised a dual fibre backbone run in separate routes from a central computer room with-in the College, to new hub rooms located on the floors. Data and telecommunications outlets were provided throughout new cellular office and open plan study areas.

The lighting system provided throughout the floors is an automatic and intelligent system, installed to maximise energy savings, based on both daylight availability and presence detection. PIR detectors control the lighting and also control the heating and cooling space by relaxing temperatures when rooms are unoccupied.

Project Team

  • Client - College Facilities Ltd
  • Main Contractor - Wallis – A Division of Kier
  • Architect - BDP
  • Services Engineers - BDP
  • Quantity Surveyors - Gardiner Theobald
  • Services Value - £3m