536.7105-1 Responsibilities.
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(a) During all phases of the project, the architect-engineer contractor that is providing design services under a separate contract with GSA is contractually responsible for the design in the same manner as under a traditional, design-bid-build project delivery method.
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(b) The design phase services provided by the construction contractor can include, but are not limited to, scheduling, systems analysis, subcontractor involvement, cost-estimating, constructability reviews, cost-reconciliation services, and market analysis.
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(c) The scope of work should task the construction contractor with reviewing the design documents and providing pricing information at various defined milestones during the design phase.
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(d) During the design phase, the architect-engineer contractor and the construction contractor shall collaborate on the design and constructability issues. The goal of this collaboration is to establish a final ECW that does not exceed the original target ECW.
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(e) No discussions between the architect-engineer contractor and the construction contractor shall be considered as a change to the construction contract or design contract unless incorporated by the contracting officer through a modification.