Optimal Replacement Cycles of Highway Operations Equipment (2018) / Chapter Skim
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10 Research Approach and Findings NCHRP 13-04 was conducted in two phases. Phase I consisted of a comprehensive literature search to identify current replacement practices relevant to the project scope.
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11 • Hourly rental rates; and • Age and utilization replacement targets. Information was also obtained from several other government agency and private sources to help analyze replacement factors related to depreciation, fuel costs, and hourly operating costs.
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12 Most Important Tool? How Often Used?
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13 Maximum Economic Repair Cost as a Percent of Purchase Price ACTUAL AGE - YEARS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 EX PE CT ED LI FE - YE AR S 75 48 20 75 57 38 20 75 61 47 33 20 75 64 53 42 31 20 75 65 56 47 38 29 20 75 67 59 51 43 35 27 20 75 68 61 54 47 40 33 26 20 75 69 63 57 51 45 39 33 24 20 75 70 65 60 55 50 44 36 32 26 20 75 70 65 60 55 50 45 40 35 30 25 20 75 70 65 60 55 50 45 40 36 32 28 24 20 75 71 67 63 59 55 51 47 43 38 32 28 24 20 75 71 67 63 59 55 51 47 43 39 35 31 26 23 20 75 71 67 63 59 55 51 47 43 39 35 32 29 26 23 20 75 71 67 63 59 55 51 47 44 41 38 35 32 29 26 23 20 75 72 67 63 59 56 53 50 47 44 41 38 35 32 29 26 23 20 75 72 69 66 63 60 57 54 51 48 45 42 35 36 33 30 27 24 20 3 YR 4 YR 5 YR 6 YR 7 YR 8 YR 9 YR 10 YR 11 YR 12 YR 13 YR 14 YR 15 YR 16 YR 17 YR 18 YR 19 YR 20 YR 75 72 69 66 63 60 57 54 51 48 45 42 39 36 33 30 27 24 22 20 Figure 2. Repair cost thresholds (4)
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