The Leadenhall Building

Identification

Map

Structure in general

Usage

Facts

• A planning application was submitted to the Corporation of London on the 10th February 2004.
• The redevelopment involved the demolition of 122 Leadenhall Street, a 14-storey office tower built in 1969.
• The building's height above ordnance datum (AOD) is 239.4 metres (785 feet).
• The vertical circulation is located on the north side, opposite the lobby and main entrance facing The Lloyd's Building.
• The floor plates vary in size which allows for great flexibility in providing office space which can be cellular or open-plan.
• The open space at the base rises to seven storeys and contains trees and retail amenities.
• Each floor plate on the south side is stepped back by .75 metres from the one below, resulting in the distinctive wedge shape when viewed from the east and west.
• The distinctive wedge shape is designed to virtually eliminate the building intruding into the sight-line of St. Paul's Cathedral when viewed along Fleet Street and up Ludgate Hill.
• Of the 29 lifts, 22 are exterior, glass, and fully scenic.
• The ladder frame on the rear (north side) encloses the fire-fighting cores which serve the office floors.
• The support core to the north is conceived as a separate tower which contains the passenger and freight lifts, service risers, floor plant and lavatories.
• The low-, mid- and high-rise sections are served by three groups of passenger lifts which are connected by two transfer lobbies at floors ten and twenty-four respectively.
• Because of the northern support core's relative position to the office floors, the structure doesn't require over-cladding with fire protection, meaning it can be designed and expressed as visible steelwork.
• Solar gain to the office areas is countered with the incorporation of remotely controlled blinds.