Chapter6Q04answer - Chapter 6 Question 4 a 0.37 Year 2...

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Chapter 6 a) 0.37 Costs $m Year 2 Flooding 4 Year 1 Flooding 4 2.74 0.63 Year 2 No flood 2 Do nothing 2 1.48 2 Year 1 No flood 2 0.74 0 0 0.09 5.6 Repair 3.78 0.91 0.3 3.6 Damage to barrier 2 3.64 4.9 Do not repair Year 1 Flood 3.248 2.9 0.7 No damage 3 Erect cheap barrier 1.716 3.08 1.275 Erect expensive barrier Year 1 No flood 1.08 See next page for rest of tree…. 0.9
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Decision tree continued for ‘Erect expensive barrier option’ 0.09 Year 2 Flooding 5.5 Year 1 Flooding 3.68 0.91 Year 2 No flood 3.5 11 feet barrier 1.86 Year 1 No flood 1.68 1.5 1 0.004 5.7 3.708 0.996 3.7 13 feet barrier 1.716 1.708 1.7 b) The authority should erect a cheap temporary barrier, but if this is damaged it should
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Chapter6Q04answer - Chapter 6 Question 4 a 0.37 Year 2...

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