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Easa, S M (1988) Earthwork Allocations with Linear Unit Costs. Journal of Construction Engineering and Management, 114(04), 641–55.
Eldin, N N (1988) Constructability improvement of Project Designs. Journal of Construction Engineering and Management, 114(04), 631–40.
Gould, C H (1988) Rolling Fours: Novel Work Schedule. Journal of Construction Engineering and Management, 114(04), 577–93.
Ioannou, P G (1988) Geologic Exploration and Risk Reduction in Underground Construction. Journal of Construction Engineering and Management, 114(04), 532–47.
- Type: Journal Article
- Keywords: Subsurface investigations; Bids; Underground construction; Risk management; Construction costs; Contract management;
- ISBN/ISSN: 0733-9364
- URL: https://doi.org/10.1061/(ASCE)0733-9364(1988)114:4(532)
- Abstract:
Geologic uncertainty in underground construction promotes design and construction conservatism and has a significant effect on project cost. Site investigation can reduce this uncertainty and decrease costs by reducing the contingency amounts included in bids. This paper presents research findings that provide a better understanding of how subsurface exploration and improved contractual risk sharing can decrease the cost of underground projects. Issues discussed include: the methodology used by tunneling contractors to estimate geologic profiles given a set of available geologic information; the geologic classification methods used to associate the expected profile with acceptable construction alternatives; the spatial prediction of ground classes and the extents over which different excavation and support methods will be necessary; the factors involved in selecting the initial support, the excavation round length and the estimation of the advance rate; the relationship between exploration, risk allocation, and bidding behavior; the impact of changed conditions clauses in underground construction contracts; the merits of using well‐defined geologic conditions as a basis in unit price contracts; and the magnitude of bid contingencies that are actually used in practice.
Ioannou, P G (1988) Pilot Tunnels: Contractor's Position. Journal of Construction Engineering and Management, 114(04), 594–613.
Ioannou, P G and Carr, R I (1988) Advanced Building Technology Matrix System. Journal of Construction Engineering and Management, 114(04), 517–31.
Maloney, W F (1988) Substance Abuse in Construction. Journal of Construction Engineering and Management, 114(04), 614–30.
O'Connor, J T and Davis, V S (1988) Constructability Improvement During Field Operations. Journal of Construction Engineering and Management, 114(04), 548–64.
Perkowski, J C (1988) Technical Trends in the E&C Business: The Next 10 Years. Journal of Construction Engineering and Management, 114(04), 565–76.
Ringwald, R C (1988) Applications of Centrifugal Pumps. Journal of Construction Engineering and Management, 114(04), 659–63.