CBG Consultants were appointed by Christ Church, for the phased renovation of the Cathedral in 2017.
Dating from the 12th Century, the Grade I Listed Cathedral was last rewired in the mid 1990s. A proposed project to clean and restore the high level building fabric gave the opportunity to renew electrical distribution and the lighting installation, which had become dated.
We worked closely with the Cathedral’s nominated lighting designer, and Purcell Architects, to develop the new electrical infrastructure proposals. This had to be installed over several phases of work whilst the Cathedral remained in use. Much of the servicing of the building is done using the high-level clerestory walkways. While these provide a convenient route, they also pose a risk to maintenance personnel, with access available only with safety harnesses to two people at a time. We developed a scheme to minimise the need to access these walkways, by locating the drivers and power supplies for the lighting system in central locations away from the clerestories. These are more likely to require future maintenance than the light fittings themselves.
We designed a new central battery emergency lighting system, bringing the building up to compliance with current regulations. Night time validation was undertaken to record delivered illuminance levels.
Phases 1 and 2 of the project are now complete, with the design of Phases 3 and 4 due to start later in 2019.