1320 - Twenty St. James's Street

Westminster

The building was constructed in 1926. The original architect was Sir Alexander Stenning and later George Vernon of Conduit Street.

Key Features 

• Refurbishment of 1920’s steel framed office building.

• Building has had a heavy refurbishment in the 1980s. Poor documentation meant in-depth investigation was required to fully understand the existing structure.

• Re-coring and infilling of existing atrium.

• Retained tenant at first, ground and basement.

• Complex temporary works around party wall structure.

• Rationalised a number of cores throughout the building to increase the core to floor utilisation.

• Led the temporary works to retain an element of RC which was found to be supporting part of the neighbouring building.

• Proved a higher imposed load to the existing floors.

• Modified existing beams to increase floor to ceiling height.

• Justified the existing foundations for increased load, avoiding strengthening.

Client: WELPUTArchitect: ORMS

Collect Project

People:
Mark Tillett
James Morgan
Spencer Stevenson