TY - BOOK AU - Indian Roads Congress[IRC] TI - Approach document on whole life costing for bridges in India. [IRC:SP:61-2004] U1 - 692.5 PY - 2004/// CY - New Delhi PB - Indian Roads Congress KW - N1 - CONTENTS Personnel of the Bridges Specifications and Standards Committee (i) & (ii) Background 1 1.Introduction 2 2.Scope 5 3.Application of WLC for Bridge Management 5 3.1. General 3.2 Definition of Life'of a Bridge 5 3.3.Planning and Prioritizing Allocation of Resources for Strengthening/ 6 Rehabilitation/Replacement/Repairs of Existing Bridge Stock at Network Level 3.4.Choosing between Alternative's Rehabilitation/Strengthening/Repair Schemes 7 for an Existing Bridge 3.5.Comparative Assessment of Design/Construction Solutions for a New Bridge 7 3.6. WLC in Evaluating Foreseeable Replacement 8 4. Components of WLC for Bridges 4.1.Costs 4.1.1. Initial costs 4.1.2. Post-construction cost 4.1.3. Indirect and other possible costs 4.1.4. Costing for environmental impact 4.2.Cost Function 5. Methods of Evaluation 5.1. Simple Payback 11 5.2. Present Value 11 5.3. Net Present Value (NPV) 12 5.4. Internal Rate of Return 16 5.5. Other Possible Ranking Decisions 16 6. Sensitivity Analysis 16 6.1.Examples of Sensitivity Analysis 7. Step-by-Step Approach to the use of WLC 21 8. WLC & Management 22 8.1. WLC as a Management Tool 22 8.2. WLC as a Management System 22 8.3. Bridge Management System 23 9. Problems Involved in Implementing and Using WLC for Bridges Appendix-A: Appendix-B: Appendix-C: 10.Steps Required for Implementing WLC in Bridges APPENDICES Examples of Whole Life Costing for Bridge Projects Traffic Delay Cost Model with Specific Reference to Quadro Future Trends in the Development of WLC, Risk and Decision Making for Bridge Projects C.I.Uncertainty and Risk C.2.WLC including Risk C.3.Risk-based Assessment and Prioritisation of Bridges Remedial Work C.4.Risk-based Maintenance Planning C.5.Multi-criteria Decision Making Appendix-D: Modelling Bridge Deterioration on the Basis of Markov Process D.I. Background Introduction to Bridge Deterioration D.2. Probabilistic Markov Model for Bridge Deterioration D.3. Basic Probabilistic Equations and Scope D.4. Problems Associated with the Use of the Markov Process for a Bridge Deterioration Model D.5. Recommendations for Implementing a Deterioration Model for Indian Bridges Appendix-E: Glossary of Terms ER -