Westfield Stratford City is the prestigious gateway to the London 2012 Olympic Park. The mixed-use development is one of the largest retail-led urban regeneration projects in the UK. The shopping centre sports a combination retail and leisure spaces connecting it with major transport links. It is also the heart of the new Stratford City residential and commercial area.

Project Value:     
£1.8 billion
Year Completed:
2011
Building Metrics:
Total Area: 1.9m sq.ft. retail
1.1m sq.ft. office space
Levels: 3 storeys retail + 4 basements
3 anchor stores
Over 300 individual tenancies
5,000 car parking spaces
3 hotels, a casino, cinema and bowling alley
Environmental Performance:
BREEAM Rating: Very Good

Sectors:
Retail
Commercial
Client:
Westfield
Primary Contractor:
Westfield Construction
Architect:
Westfield Design
Exec Architect BGI
Buchan Group
Robert Bird Group Services:
Structural Engineering

Key technical challenges

  • The primary tower structure consists of a composite slab and beam structure. Due to the long beam spans and thin slab, extensive analysis for footfall vibration was required to ensure the structure achieved code requirements and client expectations.
  • Working with the existing structure and developing design solutions that strengthened rather than demolished.
  • Extensive co-ordination with the mechanical engineer to develop a strategy that minimised beam penetrations and beam notches.
  • Differential shortening analysis with consideration of mega truss, steel structure, concrete structure and existing structural elements

Environmental performance

  • 5 Star Greenstar
  • 5 Star NABERs Energy and 4 Star NABERs Water ratings.

Robert Bird Group led the structural design of the development, which includes retail, hotel, office, leisure and car parking facilities. The construction solution typically comprised steel frames with composite floor slabs for the superstructure, and reinforced concrete construction within the substructure. The design had to incorporate significant flexibility for future adaptations and extensions to the base-build structure, including additional basement excavation and additional floors above existing structure.

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