Site visit: precast factory

Providing access for the cleaning of the internal surfaces of the dome and cone at St Paul’s Cathedral whilst maintaining business as usual was a challenge. Constructing an access system to a height of 45m suspended 33m above the church floor without contact or anchoring into the surrounding structure, and then to rotate it through sectors of 90°, was an even greater challenge. Raymond Gold, BSc(Eng), CEng Managing Director, RDG Engineering Consultants Ulrike Knox, BA(Hon) Dip.Arch. RIBA Associate, Purcell Miller Tritton