Dam Height, First Annual Probability of Flood if Height = Damages if Flooding Occurs $800,000 500,000 300,000 200,000 H (ft) Cost SO 0.25 20 700,000 0.05 800,000 0.01 900,000 0.002 30 40
Telephone poles, once installed in a location, remain in useful service until one of a variety of events occur. (a) Name three reasons why a telephone pole might be removed from useful service at a particular location. (b) You are to estimate the total useful life of telephone poles. If the pole is removed from an original location while it is still serviceable, it will be installed elsewhere. Estimate the optimistic life, most likely life, and pessimistic life for telephone poles. What percentage of all telephone poles would you expect to have a total useful life greater than your estimated optimistic life? (c) What is an environmental life cycle assessment (LCA)? How do treated wood, metal, and concrete poles compare?
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