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2013//3(a)//Engineering Eco//KU

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Maintenance costs for a small bridge with an expected 50-year life are estimated to be
$10,000 each year for the first 5 year, followed by $10,000 expenditure in the year 15 and
a $10,000 expenditure in the year 30. If i = 10% per year, what is the equivalent uniform
annual cost over the entire 50-year period?





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