| Popis: |
The paper sets out the basis on which the design and construct contracts for the underground civil engineering works for the railway were let, and refers to the assumptions on construction methods adopted by the consultants when carrying out the planning and outline design of the stations. The paper explains the extent to which contractors varied those assumptions and adopted different construction techniques to suit their own preferred methods, and their interpretation of the restraints. The design and construction of two of the stations, where the contractors selected radically different methods of construction, is described in detail. |
