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Suggested Citation:"Contents." National Academies of Sciences, Engineering, and Medicine. 2019. Geotechnical Asset Management for Transportation Agencies, Volume 2: Implementation Manual. Washington, DC: The National Academies Press. doi: 10.17226/25364.
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Suggested Citation:"Contents." National Academies of Sciences, Engineering, and Medicine. 2019. Geotechnical Asset Management for Transportation Agencies, Volume 2: Implementation Manual. Washington, DC: The National Academies Press. doi: 10.17226/25364.
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Suggested Citation:"Contents." National Academies of Sciences, Engineering, and Medicine. 2019. Geotechnical Asset Management for Transportation Agencies, Volume 2: Implementation Manual. Washington, DC: The National Academies Press. doi: 10.17226/25364.
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Suggested Citation:"Contents." National Academies of Sciences, Engineering, and Medicine. 2019. Geotechnical Asset Management for Transportation Agencies, Volume 2: Implementation Manual. Washington, DC: The National Academies Press. doi: 10.17226/25364.
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Contents i Contents PART A ........................................................................................................................................................ 1 Chapter 1 - Geotechnical Asset Management Implementation Manual Overview ....................................... 1 Introduction .............................................................................................................................................. 1 How to Use the Geotechnical Asset Management Implementation Manual ............................................ 2 Why Implement Geotechnical Asset Management? ................................................................................. 3 Starting Simple ......................................................................................................................................... 5 PART B ........................................................................................................................................................ 7 Chapter 2 - Starting Geotechnical Asset Management ................................................................................. 7 Implementing Geotechnical Asset Management ...................................................................................... 7 Workflow for Implementing GAM .......................................................................................................... 8 Step 1: Identify and Locate Geotechnical Assets ..................................................................................... 8 Step 2: Record Asset Operation and Maintenance Condition ............................................................... 17 Step 3: Assess Asset Performance Consequences .................................................................................. 18 Step 4: Review Treatment Recommendations ........................................................................................ 20 Step 5: Analyzing Impacts of Different Investment Levels ................................................................... 22 Step 6: Communicate Results ................................................................................................................. 23 Next Steps ............................................................................................................................................... 24 PART C ...................................................................................................................................................... 25 Chapter 3 - Purpose and Need for Geotechnical Asset Management ......................................................... 25 Introduction to Asset Management ......................................................................................................... 25 Introduction to Geotechnical Assets ....................................................................................................... 34 Setting the Context and Enabling GAM ................................................................................................. 42 Your Workflow for Geotechnical Asset Management ........................................................................... 50 Chapter 4 - Linking to Transportation Asset Management ......................................................................... 53 Integrating Geotechnical Asset Management with Transportation Asset Management ......................... 53 Chapter 5 – Adaptable TAM Practices for GAM ....................................................................................... 74 Introduction ............................................................................................................................................ 74 Taxonomy of Geotechnical Assets ......................................................................................................... 74 Data and Data Management ................................................................................................................... 82 Chapter 6 - Asset Assessment and Performance Measures ........................................................................ 91 Introduction ............................................................................................................................................ 91 Components of Performance Management ............................................................................................ 92 Transportation Performance Management Requirements ...................................................................... 99 Chapter 7 - Risk ........................................................................................................................................ 101 Implementing Risk in Geotechnical Asset Management ...................................................................... 101

Contents ii Chapter 8 - Practical Implementation of GAM in your Agency ............................................................... 115 Introduction .......................................................................................................................................... 115 Geotechnical Asset Management Team Implementation ..................................................................... 116 Asset Management Treatment Program Development ......................................................................... 118 Incorporating GAM into design ........................................................................................................... 135 Training for GAM ................................................................................................................................ 137 Developing the GAM Plan ................................................................................................................... 137 Overcoming the Barriers ...................................................................................................................... 142 References ................................................................................................................................................. 144 List of Figures and Tables Figure 1-1. Implementation Steps in Part B of this Manual ......................................................................... 3 Figure 2-1. GAM Implementation Workflow ............................................................................................... 8 Figure 2-2. Embankment Geotechnical Asset Examples .............................................................................. 9 Figure 2-3. Geotechnical Slope Asset Examples ........................................................................................ 10 Figure 2-4. Retaining Wall Asset Examples ............................................................................................... 11 Figure 2-5. Geotechnical Explorations on Distressed Wall Asset for Montana Department of Transportation ............................................................................................................................................. 12 Figure 2-6. Example Geotechnical Subgrade Asset Concepts .................................................................... 12 Table 2-1. GAM Planner Default Model Types ......................................................................................... 14 Figure 2-7. Geotechnical Asset Segment and Location Process ................................................................. 16 Figure 2-8. Hypothetical View of a Geotechnical Asset Inventory in Complex Terrain ............................ 17 Figure 2-9. Asset Operation and Maintenance Condition Tree .................................................................. 18 Figure 2-10. Safety Consequence Tree for GAM Planner .......................................................................... 19 Figure 2-11. Mobility and Economic Consequence Tree for GAM Planning Tool .................................... 20 Figure 2-12. Example Distribution of O&M Condition Over Time ........................................................... 23 Figure 3-1. Example of Embankment in Poor Condition ........................................................................... 25 Figure 3-2. Maturity Assessment Example ................................................................................................. 27 Table 3-1. Example Guidance Documents for Management of Transportation Assets .............................. 31 Table 3-2. Example Embankment Assets ................................................................................................... 34 Table 3-3. Example Slope Assets ............................................................................................................... 36 Table 3-4. Example Natural Hazards Originating Beyond the ROW ......................................................... 38 Table 3-5. Example Retaining Wall Assets ................................................................................................ 40 Table 3-6. Example Subgrade Assets ......................................................................................................... 41 Figure 3-3. Asset Management Maturity Levels......................................................................................... 43 Figure 3-4. Proposed Workflow for GAM Implementation ....................................................................... 50 Figure 4-1. Concept of Outward Objectives and Internal Measures ........................................................... 55 Figure 4-2. LOR Performance Metric for Communicating Risk from Geotechnical Assets ...................... 58 Figure 4-3. Staged Approach for Data Collection in Asset Management ................................................... 63 Figure 4-4. The Asset Life-Cycle ............................................................................................................... 64 Figure 4-5. Conceptual Life-Cycle Cost Graph for Geotechnical Assets ................................................... 65 Figure 4-6. Example ROI Calculation for an Asset Management System Investment ............................... 70 Table 4-1. Potential Benefits of TAM Investments by Stakeholder Group ................................................ 71 Table 4-2. Life-Cycle Costs of TAM Investments ...................................................................................... 72 Figure 5-1. Proposed Geotechnical Asset Taxonomy (modified from Anderson et al. 2016) .................... 75 Figure 5.2. Geotechnical Assets Forming the ROW Boundary .................................................................. 79

Contents iii Figure 5-3. Geotechnical Embankment Asset Modified with Soil Nail and Mesh Inclusions ................... 81 Table 5-1. Example Data Types Used in Asset Management ..................................................................... 84 Table 5-2. Example Functions for Data Used in Asset Management ......................................................... 85 Table 5-3. Common Data Sources for Consideration in GAM Implementation ........................................ 86 Figure 5-4. Conceptual Approach for Increasing GAM Maturity with Time ............................................. 90 Figure 6-1. TPM Framework ...................................................................................................................... 92 Figure 6-2. Elements of SMART Objectives .............................................................................................. 93 Figure 6-3. Relationship Between Inputs and Outputs ............................................................................... 96 Figure 6-4. Tailoring Reporting by Audience ............................................................................................. 97 Figure 6-5. Characteristics of Quality Data ................................................................................................ 99 Figure 7-1. Example Risk Cube with Three Qualitative Levels of Risk for Each Element ...................... 104 Table 7-1. Estimates of Likelihood of Experiencing Maintenance Consequences for CDOT’s Wall Management System ................................................................................................................................. 106 Table 7-2. Mobility Impact Likelihood Estimates for CDOT’s Wall Management System .................... 107 Figure 7-2. Proportion of All Network Rail Slopes and Failed Slopes Among Different Slope Hazard Classification Levels ................................................................................................................................. 108 Figure 7-3. Summary of Direct and Indirect Economic Costs Associated with Geologic Hazard Events on CDOT’s System ........................................................................................................................................ 111 Figure 7-4. Network Rail: Chain Linking Events with Common Consequences ..................................... 112 Figure 7-5. Example of Risk Rating Matrix from Network Rail .............................................................. 113 Figure 7-6. Example of Communication of Risk Exposure Areas, Sources, and Asset Types at Colorado DOT .......................................................................................................................................................... 113 Figure 8-1. Beneficial Paths Towards Implementation of GAM .............................................................. 115 Figure 8-2. Conceptual View of U.S. DOT Organizational Structure for TAM Program ........................ 118 Figure 8-3. GAM Treatment Project Prioritization Process ...................................................................... 119 Figure 8.4. Conceptual Reduction of Risk Through Management Options .............................................. 120 Table 8.1. Example Alternative Types Per Asset Type and Treatment Category .................................... 123 Figure 8-5. Treatment Prioritization Focus Areas for GAM Implementation .......................................... 126 Figure 8-6. Influence of Decisions on Total Life-Cycle Cost ................................................................... 131 Table 8-2. Hypothetical NPV Analysis for Two Embankment Reconstruction Options .......................... 133

Contents iv Appendix Materials Appendix A GAM Planner Documentation Appendix B GAM Work Problem Example Appendix C GAM Planner Formulation Appendix D Asset Condition and Level of Risk Metric Examples Appendix E GAM Life-cycle Cost Analysis Net Present Value Template Appendix F GAM Plan Outline Example Appendix G GAM Implementation Barrier Mitigation Matrix

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Geotechnical Asset Management for Transportation Agencies, Volume 2: Implementation Manual Get This Book
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TRB's National Cooperative Highway Research Program (NCHRP) Research Report 903: Geotechnical Asset Management for Transportation Agencies, Volume 2: Implementation Manual presents a manual that can be used to implement Geotechnical Asset Management (GAM) planning.

Volume 1, Research Overview, details the scope, process, and findings of the study.

The management of bridge and pavement assets has for many years garnered significant attention by state transportation agencies while the management of geotechnical assets—such as walls, slopes, embankments, and subgrades—has been elusive. Traditionally, geotechnical assets have been treated as unpredictable hazard sites with significant potential liability because failure of any geotechnical asset may lead to traveler delay, damage to other assets, or impact safety. Geotechnical assets are, however, vital to the successful operation of transportation systems and present an opportunity for system owners and operators to realize new economic benefits through risk-based asset management.

There are several downloadable files that accompany Volume 2. Links to those files and the information they contain include the following:

Appendices

Appendix A: Using the GAM Planner,

Appendix B: GAM Inventory Start Example,

Appendix C: GAM Model Formulation,

Appendix D: Geotechnical Asset Condition and Level-of-Risk Examples,

Appendix E: GAM Asset-Level Net Present Value Framework Worksheet,

Appendix F: GAM Plan Outline, and

Appendix G: GAM Implementation Barrier Mitigation Strategy Matrix.

Planner

This file contains the spreadsheet-based (Microsoft Excel) tool. User information for the GAM Planner is provided in Volume 2, Appendix A.

Template

This file contains a spreadsheet-based (Microsoft Excel) worksheet template for a life-cycle cost investment analysis tool. The template supports the process of selecting project-level treatment alternatives in GAM and can be used for investment-based treatment alternative analysis that considers asset or project life-cycle costs including design, O&M, and any potential rehabilitation or reconstruction treatments. User information for the NPV Template appears in Volume 2, Appendix E.

Training Slides

This file contains a slide-based presentation (created in Microsoft PowerPoint) that can be used during training for GAM.Downloadable files and the information contained in those

Note: To use the GAM Planner it is necessary to enable macros. Also, the “Excel Solver” must be installed. The Excel Solver is a plug-in provided with Microsoft Excel.

Software Disclaimer - This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively "TRB") be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages. TRB's National Cooperative Highway Research Program (NCHRP) Research Report 903: Geotechnical Asset Management for Transportation Agencies provides an introduction and scalable guidance for state transportation agencies on how to implement risk-based geotechnical asset management into current asset management plans. Volume 1, Research Overview, details the scope, process, and findings of the study.

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