At 4 Cannon Street, opposite St. Paul's Cathedral in London, a new light-flooded seven-story office building with roof garden has been built on a ground space of 40 x 55 m (131 x 180 ft). Due to its proximity to the cathedral, the height was limited to 25 m (82 ft). Visitors of the large roof terrace can profit from spectacular views of St. Paul's Cathedral and the City.
Aluminum-cladded canopy, manually operated sliding doors in the roof area, 1.5 m (5 ft) wide, 2.2 m (7 ft) high. The 6 m (20 ft) wide four-leaf sliding door system can be opened telescopically on a rail up to a width of 4.5 m (15 ft). The technical areas on the roof have been clad with acoustic fins for noise reduction. Above the top office floor, a nearly horizontal roof glazing with triple insulating glass and lateral rain gutter has been installed. In the roof area, along the north side and the adjacent north-east and north-west corners of the building a 70 m (230 ft) long projecting canopy has been installed which is clad with sandstone soffits.
25 m / 82 ft
7 stories tall
Unitized aluminum façade, standard units 3 x 4 m (10 x 13 ft) in size, with a weight of approx. 550 kg (1,212 lb), with insulating glass, partly featuring heavy and large-size natural stones. The rectangular grid structure made of sandstones is 0.4 x 0.6 x 0.17 m (15 3/4 x 23 5/8 x 6 11/16”) in size, with a weight of 70 kg (154 lb). Special stones weighing up to 100 kg (220 lb) have been pre-assembled to the façade units. The roof area features glazed terrace cladding with sliding doors.
Design & engineering, manufacturing and installation of around 3,500 sqm (37,700 sq ft) of unitized aluminum façade, windscreen, sliding doors and roof glazing.
OWNER: Pembroke, London
ARCHITECT: PLP Architecture, London
CONTRACTOR: Mace, London
FAÇADE CONSULTANT: FMDC Ltd., London
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