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Guideline for the Preparation of Road Structure Durability Plans

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Guideline for the Preparation of Road Structure Durability Plans Guideline for the Preparation of Road Structure Durability Plans Bridge Asset Management, Structures Division Guideline for the Preparation of Road Structure Durability Plans Engineering & Technology Table of Contents Executive Summary.......................................................................................................................................iii Glossary..........................................................................................................................................................iv 1 Introduction............................................................................................................................................1-1 1.1 General..........................................................................................................................................1-1 1.2 Asset Performance........................................................................................................................1-1 1.3 Guideline Structure .......................................................................................................................1-1 1.4 Scope ............................................................................................................................................1-3 1.5 Submission of Durability Plans .....................................................................................................1-3 2 Content of Durability Plan Report .......................................................................................................2-1 2.1 General..........................................................................................................................................2-1 2.2 Overview of Durability Design.......................................................................................................2-1 2.3 Durability Plan Report Introduction ...............................................................................................2-4 2.4 Service Life Criteria (Table 1) .......................................................................................................2-5 2.4.1 Structure Components ......................................................................................................2-5 2.4.2 Durability Limit States .......................................................................................................2-5 2.5 Exposure Conditions (Table 2) .....................................................................................................2-6 2.5.1 Classification of Environment Conditions in Design Standards........................................2-6 2.5.2 Macro Environments .........................................................................................................2-7 2.5.3 Define Deterioration Mechanisms.....................................................................................2-9 2.6 Assessment of Design Solutions (Table 3)...................................................................................2-9 2.6.1 Identify Protective or Mitigation Measures......................................................................2-10 2.6.2 Durability Design in Standards .......................................................................................2-10 2.6.3 Durability Modelling.........................................................................................................2-10 2.6.4 Component Inspection & Replacement ..........................................................................2-11 2.6.5 Detailing ..........................................................................................................................2-11 2.6.6 DTMR Standards and Standard Details .........................................................................2-13 2.6.7 Construction Issues ........................................................................................................2-14 2.6.8 Control of Early Age Thermal Cracking in Concrete ......................................................2-14 2.6.9 Safety Review of Inspection & Replacement Activities ..................................................2-15 2.7 Maintenance & Servicing Assumptions (Table 4) .......................................................................2-15 2.8 Routine Inspection (Table 5).......................................................................................................2-16 2.8.1 Access.............................................................................................................................2-16 2.8.2 Condition State Guidelines .............................................................................................2-16 2.9 Replacement of Components (Table 6) ......................................................................................2-17 2.9.1 Bearings..........................................................................................................................2-17 2.10 Construction Phase Durability Plan Compliance (Table 8).........................................................2-17 2.10.1 General ...........................................................................................................................2-18 2.10.2 Durability Critical Processes (Table 8)............................................................................2-18 2.10.3 Verification Procedures and Tests..................................................................................2-18 2.10.4 Defects and Treatment Records.....................................................................................2-19 3 Durability Plan Verification Report......................................................................................................3-1 3.1 Submission Requirements ............................................................................................................3-1 3.2 As Built Records............................................................................................................................3-1 3.2.1 Amendments to the design ...............................................................................................3-1 3.2.2 As Built Drawings..............................................................................................................3-1 October 2009 i Bridge Asset Management, Structures Division Guideline for the Preparation of Road Structure Durability Plans Engineering & Technology 3.2.3 Construction Records .......................................................................................................3-1 3.2.4 Durability Verification Report (Table 8).............................................................................3-1 3.2.5 Level 2 Inspection Report .................................................................................................3-2 3.2.6 Photographic Records ......................................................................................................3-2 3.3 Materials and Proprietary Product Details (Table 7).....................................................................3-2 3.3.1 Precast concrete components ..........................................................................................3-2 3.3.2 Data sheets.......................................................................................................................3-2 3.3.3 Warranties.........................................................................................................................3-2 4 Durability Design Summary Tables.....................................................................................................4-1 4.1 General..........................................................................................................................................4-1 4.2 Structure Durability Outline: Table 1 .............................................................................................4-1 4.3 Component Exposure Assessment: Table 2.................................................................................4-1 4.4 Durability Provisions for Critical Components: Table 3.................................................................4-1 4.5 Maintenance Intervention Assumptions: Table 4 ..........................................................................4-1 4.6 Inspection & Access Provisions: Table 5......................................................................................4-1 4.7 Replacement of Components: Table 6 .........................................................................................4-1 4.8 Proprietary Products Record: Table 7...........................................................................................4-2 4.9 Construction Phase Departures: Table 8......................................................................................4-2 4.10 Summary of Submission Requirements........................................................................................4-2 4.10.1 Concept Design ................................................................................................................4-2 4.10.2 Detailed Design.................................................................................................................4-2 4.10.3 During Construction ..........................................................................................................4-2 4.10.4 Construction Verification Report .......................................................................................4-2 5 Reference Documents
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