LIFE-CYCLE COST ANALYSIS PROCEDURES MANUAL

[david-smith]

LIFE-CYCLE COST ANALYSIS PROCEDURES MANUAL

Author: State of California Department of Transportation Pavement Standards Team & Division of Design | Size: 3.6 MB | Format: PDF | Quality: Original preprint | Publisher: State of California Department of Transportation Pavement Standards Team & Division of Design | Year: 2007 | pages: 134

DISCLAIMER
This manual is intended for the use of Caltrans and non-Caltrans personnel on projects on the State Highway System regardless of funding source. Engineers and agencies developing projects off the State Highway System may use this manual at their own discretion. Caltrans is not responsible for any work outside of Caltrans performed by non-Caltrans personnel using this manual.
TABLE OF CONTENTS
CHAPTER 1 - INTRODUCTION..................................................................................................8
1.1 Purpose of This Manual........................................................................................................8
1.2 Background..........................................................................................................................8
1.3 Caltrans’ Policy.....................................................................................................................9
CHAPTER 2 - LCCA...................................................................................................................11
2.1 Design alternatives.............................................................................................................12
4.1.1 Provisions for Selecting Design Alternatives...........................................................12
4.1.2 Selecting Design Alternatives...................................................................................15
2.2 Analysis Period...................................................................................................................17
2.3 Discount Rate......................................................................................................................19
2.4 Maintenance and Rehabilitation Sequences.......................................................................20
2.5 Estimating Costs.................................................................................................................24
2.5.1 Initial Costs...................................................................................................................25
2.5.2 Maintenance Costs........................................................................................................26
2.5.3 Rehabilitation Costs......................................................................................................27
2.5.4 User Costs.....................................................................................................................34
2.5.5 Remaining Service Life Value......................................................................................35
2.6 Calculating Life-Cycle Costs..............................................................................................35
CHAPTER 3 - Using RealCost.....................................................................................................37
3.1 Methodology......................................................................................................................37
3.2 Installing & Starting RealCost...........................................................................................39
3.3 Project Inputs......................................................................................................................41
3.3.1 Project Details...............................................................................................................41
3.3.2 Analysis Options...........................................................................................................43
3.3.3 Traffic Data...................................................................................................................45
3.3.4 Value of User Time......................................................................................................51
3.3.6 Added Time and Vehicle Stopping Costs.....................................................................54
3.3.7 Save Project-Level Inputs.............................................................................................56
3.3.8 Alternative-Level Inputs..............................................................................................56
3.5 Input Warnings and Errors..................................................................................................69
3.6 Simulation and Outputs......................................................................................................70
3.7 Administrative Functions....................................................................................................73
CHAPTER 4 – Analyzing LCCA Results....................................................................................74
4.1 Status of the LCCA Procedures Manual.......................................................................75
4.2 RealCost.......................................................................................................................75
4.2.1 Project Conditions and RealCost..............................................................................76
4.3 Agency and User Costs.................................................................................................77
4.3.1 Limitations of LCCA Results...................................................................................78
4.3.2 Comparing Agency & User Costs.............................................................................79
4.3.3 Choosing an Alternative...........................................................................................80
4.4 Projects with Different Pavement Design Lives...........................................................80
REFERENCES............................................................................................................................81
APPENDIX 1: glossary and list of acronyms...............................................................................82
APPENDIX 2: List of RealCost Limitations and Bugs...............................................................88
APPENDIX 3: Productivity estimates of typical m&r strategies.................................................89
APPENDIX 4: Typical Pavement M&R Schedules for California..............................................90
APPENDIX 5: TRAFFIC INPUTS ESTIMATION...................................................................126
APPENDIX 6: ALTERNATE PROCEDURE FOR CALCULATING CONSTRUCTION YEAR AADT........................................................................................................................................132
APPENDIX 7: Weekend traffic hourly distribution..................................................................134

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