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The Canary Wharf project comprises the construction of 12.5 M ft2 of office and retail space in 24 buildings. The buildings are grouped into four neighbourhoods focused around the major public spaces known as Westferry Circus, Founders Court (Cabot Square), Docklands Square (Canada Square), and Blackwall Place (Churchill Place). For reference during construction, the buildings are known by a number and a prefix related to the above grouping, e.g. the building known as FC2 is building 2 in the Founders Court (Cabot Square) neighbourhood. Phase 1 of the project, comprising approximately 4.5 M ft2 net of office and retail facilities and the supporting infrastructure, is divided into 10 fairly distinct building parcels, as follows:
1: Westferry Circus and West India Place
2: infrastructure comprising roads and watercuts west of Docklands Square (Canada Square), Founders Court (Cabot Square), and Blackwall Place (Churchill Place carparks). General pavings to plazas and promenades and retail buildings west of DS7
3: building DS7
4: the Canary Wharf Station to the Docklands Light Railway
5-10: buildings FCl to FC6 inclusive
Identification of what needs to be inspected, when and how It is not possible to inspect economically all parts of a building or civil engineering structure. The rear face of a basement wall against which backfill has been placed or the condition of the embedded length of concrete or steel piles are examples of items which are extremely expensive to inspect. They have therefore to be detailed appropriately. Any structure should be classified into areas or items which cannot be inspected regularly, those which may be inspected regularly, and those which definitely need to be inspected frequently. This classification should be carried out at the design concept stage: it is the responsibility of the design team.
This 1/2-day colloquium has developed from the 1990 Henderson Colloquium held by the British Group of IABSE at Pembroke College, Cambridge. The proceedings of this will be available shortly.
The topic under discussion at Cambridge was ‘The design life of structures’. In simple terms, the purpose of the colloquium was to bring together about 30 experts, while asking them to contribute a paper on some aspect of the subject, and, most important, to take part in a debate on the feasibility of developing design life concepts, which might permit the construction industry to consciously design and construct structures which perform ‘better’ in service-life terms.