Optimal Replacement Cycles of Highway Operations Equipment (2018) / Chapter Skim
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From page 59... ...
59 Equipment Replacement Factors Several factors are used to perform LCCA and as inputs in the fleet replacement processes. Table 6 provides a summary of these factors.
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60 the ½-Ton Pickup class. The default factors were determined based on salvage value data obtained from several highway agency information sources (see Part I in this report)
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61 Code Description Year Miles Hours 1300 Sedan 6 90,000 1600 SUV 6 90,000 1348 Police Cruiser 5 80,000 1521 -Ton Pickup 8 110,000 1531 -Ton Pickup 8 110,000 1523 -Ton Crew Cab 8 110,000 1533 -Ton Crew Cab 8 110,000 1424 Vans 8 110,000 3514 Mechanic Shop Truck 10 120,000 2513 1-Ton Crew Cab 10 120,000 3711 Flat Bed Truck 10 120,000 3744 Scissor-Bed Truck 10 120,000 6712 Single-Axle Dump 12 120,000 8712 Tandem Dump 12 120,000 8785 Tri-axle Dump 12 120,000 8786 Bottom Dump 12 120,000 8810 Tractor/Trailer 12 120,000 8743 Bucket Truck 15 120,000 8744 Bridge Snooper Truck 20 250,000 8771 Roadway Sweeper Truck 12 120,000 8741 Mobile Crane 15 120,000 8773 Culvert Cleaner/Vacuum Truck 12 120,000 8778 Asphalt Distributor 12 120,000 8731 Wrecker Truck 12 250,000 9452 Striping/Paint Truck 12 250,000 9132 End Loader, Wheeled 12 5,000 9220 End Loader, Track 12 3,000 9110 Loader, Skid Steer 12 3,000 9160 Motor Grader 15 5,000 9440 Roller, Pneumatic 12 5,000 9441 Roller, Steel Wheel 12 5,000 9150 Excavator, Wheeled 12 8,000 9250 Excavator, Track 12 8,000 9230 Dozer 12 5,000 9290 Dragline 15 5,000 9142 Backhoe 12 8,000 9431 Asphalt Paver 15 8,000 9426 Pavement Profiler 15 8,000 9623 Tractor, Mower 12 5,000 0110 Salt Spreader 8 5,000 Passenger Vehicles Replacement Planning Targets Heavy/Off-Road Equipment Equipment Class Maintenance Equipment Light Trucks Medium Duty Trucks Large Trucks Specialty Trucks Equipment Group Table 7. Replacement planning targets for age and utilization.
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62 5.4.1 Maintenance and Repair Cost Data Consistency To ensure that consistent and complete maintenance data are used to compute optimal life cycles, the following rules should be adopted for tracking and allocating M&R costs. • Include all repair types.
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63 should be charged to a shop work order. For nonrepair activities, such as shop cleanup, training, or safety meetings, a nonmaintenance activity code should be used to report mechanic time.
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64 5.7 Physical Condition and Mission Criticality Physical condition and mission criticality are not monetary factors used in performing LCCA. However, they are important factors to be considered in replacement decisions.
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65 Equipment Number Description: Date: By: Equipment Criticality Weight 15 Good No rust, no body damage Fair Very little rust, minor body damage Poor Visible rust, some minor body repairs needed Very Poor Major rust or body damage. Requires major work within one year SCORE: 3.8 Weight 20 Good Good mechanical condition Fair Some minor services needed Poor Major repairs and more frequent maintenance needed Very Poor Major repairs needed within one year SCORE: 5.0 Weight 20 Good Good mechanical condition Fair Some minor services needed Poor Major repairs and more frequent maintenance needed Very Poor Major repairs needed within one year SCORE: 5.0 Weight 20 Good Good mechanical condition Fair Some minor services needed Poor Major repairs and more frequent maintenance needed Very Poor Major repairs needed within one year SCORE: 20.0 Weight 10 Good Good mechanical condition Fair Some minor services needed Poor Major repairs and more frequent maintenance needed Very Poor Major repairs needed within one year SCORE: 7.0 Weight 15 Good No rust or frame damage Fair Some minor rust and/or frame damage Poor Moderate rust and/or frame damage but safe to operate Very Poor Major rust and/or frame damage; safety concerns SCORE: 15.0 Overall Condition Score: 55.8 Notes: Steering/Suspension Electrical Frame Vehicle Condition Assessment Transmission Engine Very Low Body Figure 6.
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66 5.7.1 Recording and Tracking Condition Scores Condition assessments may be completed by using either a paper copy of the vehicle condition assessment form or the electronic spreadsheet in the optimization tool. If a paper form is used, the condition ratings must be entered into the electronic form so that the spreadsheet can compute an overall condition score.
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67 Figure 11. Selecting a condition rating.
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68 overhead expenses may have been added into direct wages. To help establish the correct values, it may be appropriate to consult the agency's accounting department.
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69 ity, as shown in the example, the true cost for fully loaded mechanic labor should be $53.01 per hour. This means that the agency's equipment M&R costs are being significantly underestimated and most likely will have a significant impact on determining optimal life cycles.
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70 To account for obsolescence, the LCCA measures obsolescence based on fuel utilization. Based on the corporate average fuel economy data, fuel economy for passenger vehicles and light trucks has been 1.6% and 1.8%, respectively, over the recent 15-year period.
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