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a) Costs and errors during the development of a design, b) Preliminary investigations distribution through a design.

a) Costs and errors during the development of a design, b) Preliminary investigations distribution through a design.

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Tunnels upgrade connectivity and mobility, with an all-out venture cost that mostly depends on the financial support given by significant lenders. Financial sustainability is related to Risk and Sensitivity Analysis, which in turn depends the level of knowledge of the geology of the project site. The target of this paper is twofold: depict the cycl...