Tate Modern – Switch House Museum Extension



Market Sector: Public

Client: Trustees of Tate Modern

Engineer: Ramboll

Main Contractor: MACE

Architect: Herzog & de Meuron

The Tate Modern extension, known as the Switch House, is the home to the museum’s new unique pyramid-shaped tower, standing 64.5m-high and adding 60% more space to the museum. 

​The 10-storey Switch House has been designed as a hybrid structure with both steel and concrete-framed elements. A total of 1,000t of structural steelwork was fabricated, supplied and erected for the project by Bourne Steel during phase one. ​​

For phase one, the western oil tank steelwork was erected forming the footprint of the tower structure, including raking columns and ground floor transfer beams weighing 1,200kg/m.  Bourne Steel also installed all the steelwork to strengthen the existing ground slab within the original Switch House and new steelwork up to ground level.

Tate Modern Switch House
Tate Modern Switch House