Problems with Rock Excavation Specification in Alberta

by Vishnu Diyaljee, Alberta Transportation and Utilities, Edmonton, Canada,
Murthy Pariti, Alberta Transportation and Utilities, Edmonton, Canada,

Document Type: Proceeding Paper

Part of: Detection of and Construction at the Soil/Rock Interface


As a result of contract overruns and claims from classification, measurement, and payment for 'solid rock' excavation, Alberta Transportation and Utilities embarked on a dedicated field and laboratory program to investigate and quantify rock materials. This program has resulted in the provision of a rock investigation report for prospective bidders to view, as well as 'special provisions' which distinguish rock excavation as common material or solid rock. Since implementation of this program some 3 years ago, no claims have resulted. This paper discusses the contractual problems resulting from rock variability and approaches used in their resolution.

Subject Headings: Rock properties | Rocks | Excavation | Claims | Field tests | Highways and roads | Payment | Solid mechanics | Alberta | Canada

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