Arctic Earth Materials for Offshore Construction in Alaska

by Michael G. Schlegel, McClelland-EBA Inc, Anchorage, AK, USA,
Arshud Mahmood, McClelland-EBA Inc, Anchorage, AK, USA,

Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore


With the exploration activities onshore and offshore and the development of production facilities, the need for granular earth materials on the North Slope of Alaska is ever present. The selection of granular resources for development is primarily dependent on the quality of material and its location. Knowledge of excavation and placement techniques is essential to control escalating cost of mining and transportation. There are two basic modes of construction - winter truck haul or summer barge haul. A discussion of the mining, dredging, and placements techniques is presented. An interpretation of the surficial geology of the Arctic Coastal Plain with respect to granular resources and their engineering properties is presented. The engineering properties are developed from index testing and published data. Relationships of thaw settlement to moisture content, in-place density of the fill, and grain-size is evaluated with existing published data.

Subject Headings: Construction materials | Offshore construction | Earth materials | Soil properties | Offshore structures | Slopes | Excavation | Construction management | Arctic | Alaska | United States

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