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1
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- Brandi Backus
- Derek Stathis
- Zach Smith
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2
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- Oil was discovered on the North Slope in 1968
- Pipeline travels from Prudhoe Bay to Valdez
- Took three years to construct
- Cost approximately 8 billion dollars.
- 800 miles long
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3
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- Five Main Regions:
- North Slope
- Brooks Range
- Interior
- Alaska Range
- Chugach Range
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4
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- Permafrost
- Ground tremors, earthquakes
- Game and River Crossings
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5
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- Permafrost is any rock or soil material that has remained below 32° F
continuously for two or more years.
- Problems
- Frost Heaving
- Frost Jacking
- Thaw Settlement
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6
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- Four main design modes:
- Aboveground (52.5%)
- Belowground Conventional (47%)
- Special burial non-refrigerated
- Special burial refrigerated
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7
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- Pipeline crosses the Denali Fault south of Delta Junction
- Pipeline was constructed in a zig-zag formation to minimize expansion.
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8
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9
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- 800 stream and river crossings
- Caribou game trails
- Maintaining revegetation laws
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10
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- Raised/buried crossings
- Bridges
- Gate Valves
- Implanted cold-resistant grasses
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11
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- $8 billion in a 3 year period
- Spans 800 miles over 5 regions
- Overcame engineering problems such as:
- Permafrost
- Seismic activity
- Environmental impacts
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