Beckett House

 

Background

Beckett House is the Historic home of the Mercers of London dating back to the 14th century. The original Mercers Hall was destroyed in the Great Fire of London in 1666 and was then reopened in 1676, it was then destroyed in an air raid in 1941. The third and present Mercers Hall (Beckett House) was rebuilt on the same site and re-opened in 1958. The Mercers were traders of fine Fabrics and Silks and as a profitable organisation at the time became bankers to the Monarchy. As repayment for the their support they were granted freehold to large areas of central London, which today serves as their principal source of revenue.
The Mercers’ Company donates much of its trading income to its Charitable Foundation which, along with the charities’ own income, gives to charitable causes, especially in the fields of education, care for the elderly. Famous members of the Mercers included Sir “Dick Whittington” and Sir Winston Churchill.

Task

Our objectives were:

  • To replace the rooftop plant which is more than 20 years old with 2 Air Cooled Chillers and 2 Air Handling Units
  • Units needed to be fitted directly onto existing structural rooftop steelwork
  • Units to be below 1.5 max parapit height to meet local building regulations
  • Noise breakout to be within current regulations
  • Must be compliant with Part 'L' 2006

Solution

Resident M&E consultant Mecserve, working with the appointed and site based M&E contractors Mala Engineering programmed for the selected Barkell Air Handling Units and Coolmation (Rhoss) Air Cooled Chillers. Both designed to fit rigid dimensional and spacial constraints. In the case of the chillers the compressors had to be built alongside the condensing coils rather than underneath in order to keep within the maximum height constraint.

To ensure the building still operated normally, the plant changeover was carried out in two stages East and West zones. The corresponding chiller and AHU were removed one weekend with the replacements installed the following weekend. The remaining zone plant was then removed the third weekend with the new plant installed in the final weekend.

This sequencing ensured minimum disruption to the occupant but yet a very quick turnaround.