College Projects

Fellow’s Parlour, Trinity College, Cambridge

Client: The Master and Fellows of Trinity College, Cambridge
DB&P's Services: Building Services Consultant Engineers

The extensive refurbishment of the Fellow’s Parlour at Trinity College was amalgamated with the renovation of the Guest Rooms in the Master’s Lodge. The design team fully appreciated the politically sensitive nature of this project and subsequently adopted a methodical design approach with the utmost attention given to detail, thus ensuring that the works on site proceeded as expediently as possible with the least inconvenience to the College’s daily routine.

Of major consideration was the introduction of fresh air into the Fellow’s Parlour; in this respect Building Control were insistent that the ventilation system was designed on the basis that the 120No. Fellows would be permitted to smoke in such an established bastion. However, endeavouring to introduce a mechanical ventilation system with correspondingly high proportions of fresh /exhaust air (relative to a maximum permissible background noise level of NR25), proved to be an interesting but not insurmountable task. The problem was resolved with the introduction of specialist attenuation measures, the prudent use of swaged ductwork and the selection of high quality / robust plant. Speed control of the supply air handling unit is dictated via an air quality (CO2) detector, which enhances the proportion of fresh air as occupancy levels increase: air quality decreases; speed of the extract fan corresponds simultaneously to maintain a balanced room pressure regime.

Close control of temperature within the space is critical, this requirement in conjunction with the need to remove unwanted clutter from the display surfaces, resulted in the selection of a LPHW underfloor heating system. The system (installed under a solid oak flooring of some 1.” thick) operates to provide a constant trickle of low-grade heat into the space, thus ensuring that the room is not subjected to large temperature variations.

Extent of Mechanical Services:

  • LPHW underfloor heating installed below solid oak flooring; with primary HTG. mains emanating from the
  • Phase I / Master’s Plant Room
  • Supply and extract ventilation systems
  • Domestic H&C water services to the Fellow’s kitchen and servery facilities
  • Automatic Control Systems

Extent of Electrical Services:

  • General lighting and emergency lighting
  • Aesthetic and task lighting
  • Electrical small power
  • CCTV and security systems
  • Fire alarm installation.

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