DESIGN AND CONSTRUCT
Design and Construct combines the design and construction responsibilities by awarding the contract to a single Contractor (contractor, consortium, joint venture) under a lump sum contract, as illustrated in Figure 2. Contractors prepare a proposal with price demonstrating their intent to complete the design and undertake the construction. The Contractor takes responsibility for the design documents such that they are complete and free from error. Main Roads assumes responsibility for the operation and maintenance upon completion of the Project.
The successful implementation of the Design and Construct relies on well scoped tender documents, performance criteria and realistic delivery timeframes. The unique characteristics of the Design and Construct project method are:
· Single point of accountability for the design and construction phases ;
· Scope can be defined using performance requirements; and
· Performance specifications;
Main Roads has developed template contract documentation using a Contract Deed and Scope of Works Technical Criteria (SWTC) documentation. All contractors must be pre-qualified prior to tendering, as described in Pre-qualification of Major Works Contractors. The contract form is outlined in Table 1.
