Handbook for Bridge Inspections - TSP2

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Procedures In most cases it is sufficient for the width of the area to be cut to match the dimensions of the re inforcement and the cover sllch that the minimum width equals the cover plus the diameter of the reinforcement (0 + d). Refer to Figure 7.3- 12. Approximately 1/3 to Y2 of the reinforcement element's circumference s hou~d be bared for atleasl 0.3 cm. .r minimum O+d .r .- :T- O :Ty d r Figllre 7.3-/2: Recommended Breadll! & Deplh oflhe CIIII/llc ision The degree of rusting in the reinforcement wi ll be assessed usi ng the fo llowing scale: Level A: No damage. Dull grey coating on the rein forcement ele ment. Level B: The first small traces ofrus! can be seen. Assess whether these date from the bridge's construction period. Level C: Even distribution of surface rust. Level D: Severely peeling surface rust as we ll as clear cross-secti onal reduction in size. Level E: Corrosive pi tting. The degrees of rust ing are illustrated in Figures 7.3-13 to 7.3-17. Figllre 7.3-/3: Example ofRusl Level A
Figl/Ye 7.3-14: Example 0/ Rilsi lel'ef B Figllre 7.3-15: £wmp/e 0/ RIiSf Lel'ef C Figllre 7.3-16: bump/eo/Rllsf Lel,e/ D
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Norwegian Public Roads Administrati
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Copyright Copyright © 2000-01-1 2
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Foreword Inspections of hridges are
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5.4 Damage Eva luation 5.4.1 Primar
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9.3.8 9.3.9 9.3. 10 9.3. 11 9.4 Sto
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1. Inspection of Bridges Guidel ine
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2 TERMINOLOGY Location System 2.1 T
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Hangers / ® ® 23456189 Suspension
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Figure 2. 1-9: Example of a Reflecl
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3 Planning of Inspection Planning P
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3.5 Inspection Resources and Safety
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4. Inspection Tools & Access Equipm
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4.1.3 Inspection Tools for General
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4.1 .5 Inspection Tools for Special
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The site conditions may decide whic
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king load capacity of at least 300
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Work Diagram for Bridge Lift ,....
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When inspecting suspension bridges,
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Suspended Working Platform Also sus
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5 Damage Evaluation Fundamentals 5.
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207 Leakage/dampness of concrete el
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501 Settlement of timber element
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809 Olher damage to the drain syste
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These effects are presented in orde
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The Development o f Damage It is im
Page 54 and 55: Whatever types of damage are observ
Page 56 and 57: 5.6 Cause(s) of Damage The most com
Page 58 and 59: 49 Other insufficient maintenance 5
Page 60 and 61: 6 Carrying out Inspections Ba sis o
Page 62 and 63: o Fig ure 6.1- 1: Honeycombing * Ho
Page 64 and 65: 6.2.2 Visual Checking The visual in
Page 66 and 67: Stone Elements • Serious settleme
Page 68 and 69: Parapets * Deformation due to traff
Page 70 and 71: • Damage to slope protection •
Page 72 and 73: • Cracks in timber members • Sp
Page 74 and 75: • Discoloration • Loose or lack
Page 76 and 77: load Bearing Cables • Broken stra
Page 78 and 79: * Damage to the surface treatment F
Page 80 and 81: Stone Elements Steel Elements Timbe
Page 82 and 83: 6.8 Maintenance Measures - Extent o
Page 84 and 85: 7 Surveys, Materials Tests & Instru
Page 86 and 87: All the measurements and materials
Page 88 and 89: Procedures Scope Equipment The thi
Page 90 and 91: Procedures Scope Sag is measured us
Page 92 and 93: grouting gun pushed all the way to
Page 94 and 95: 7.3.2 Measuring the Depth of Carbon
Page 96 and 97: * The density of the concrete in re
Page 98 and 99: Any dust should be extracted using
Page 100 and 101: Completion Surveys & Major Inspecti
Page 102 and 103: • Homogeneity of the binding agen
Page 106 and 107: Figure 7.3-17 E.wmpleQJRlIsl Level
Page 108 and 109: " ~ ~ ~ • E E u B ~ ~ u '" ~ 0
Page 110 and 111: Superstructure Surfaces most expose
Page 112 and 113: The sound waves can be transmitted
Page 114 and 115: Procedures The compress ive strengt
Page 116 and 117: Figllre 7.7-2: Thicklless ofSllrfac
Page 118 and 119: 8 Reporting the Results of Inspecti
Page 120 and 121: After carrying out a major inspecti
Page 122 and 123: 4.5 Statistical Background 4.6 Subm
Page 124 and 125: 8.5 Materials Testing As with measu
Page 126 and 127: Drilling cores In this instance an
Page 128 and 129: ECP-Measurements For the presentati
Page 130 and 131: 9 DAMAGE EVALU ATION CATALOGUE Th
Page 132 and 133: 9.1 ELEMENTS IN THE GROUND 101. Sub
Page 134 and 135: 102. Obstruction of Waterway 9.1 EL
Page 136 and 137: 9.1 ELEMENTS IN THE GROUND 103. Sco
Page 138 and 139: 9.1 ELEMENTS IN THE GROUND Original
Page 140 and 141: 9.1 ELEMENTS IN THE GROUND Example
Page 142 and 143: 9.1 ELEMENTS IN THE GROUND 104. Ina
Page 144: 9.1 ELEMENTS IN THE GROUND 109. Oth
Page 147 and 148: 9.2 CONCRETE ELEMENTS 201 Settlemen
Page 149 and 150: 9.2 CONCRETE ELEMENTS 202 Movement
Page 151 and 152: 9.2 CONCRETE ELEMENTS 203 Deformati
Page 153 and 154: 9.2 CONCRETE ELEMENTS Example 9.2-7
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9.2 CONCRETE ELEMENTS Serious crack
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9.2 CONCRETE ELEMENTS Example 9.2-8
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9.2 CONCRETE ELEMENTS 205 Ruptures
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9.2 CONCRETE ELEMENTS 206 Damage to
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9.2 CONCRETE ELEMENTS 207 LeakagesJ
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Handbook for Bridge Inspections - TSP2

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