ANSI/TIA-1019 DRAFT - Inti

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Making Longitudinal Wave WorkLoud Entry NoiseTypical CorrosionNice Back WallSmall Back Wall
Limiting Factors in using Ultra Sound• Diameter of anchor rod. Small diameter offers increasedresistance.• Length of anchor rod. Longer rod offers increased resistance.• Access or insertion point. Determines the size and type of probeto be used.• Altering Anchor Rod requires Structural Analysis• Ultra Sound is the most promising method of anchor rodinspection.
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Tower Construction, Tower Standards
Page 3 and 4:
Historical Development of Standards
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The New Standard will incorporate t
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What is a Gin Pole• It is a devic
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Development of Gin Pole Standard•
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This was followed by full scale tes
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TR 14.7Gin Pole Sub-Committee Conce
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Advantages for the Broadcaster• A
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• 1.0 General• 2.0 Construction
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Definitions• Competent Rigger: a
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Qualified Person• Have met all th
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Rigging Plan Requirements• A rigg
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Rigging Plan ClassificationsClassDe
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Climbing Facilities• Maintain the
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Types of Hoist AnchorageLoad LineHo
Page 31 and 32:
Supporting Structural Loading Durin
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Guy Wire Installation• Guy wires
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Guy Anchor Temporary Support• Sli
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Slippage Connections• When fricti
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Temporary Backup System• The back
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• Block forces transmitted to the
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Lifting Existing Loads from Structu
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Gin Pole Operation and Use• Scope
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Monitoring a Lift• Load Testing
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Tip DeflectionHelps VerifyLiftedLoa
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Changing Degrees to InchesHface
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Special Engineering Lift1. It is th
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“Special Engineered Lifts” can
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Shot Thru Transit
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Load off the Ground with Minimum Ta
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Regular Tag Situation
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Bridle Slings• Controls the stabi
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Straight and Trolley Tag Systems
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Controlling the Load Line
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• Conditions in which thestructur
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Operational and Non-Operational Win
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Tilted Gin Pole Use to be Covered
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Repairs and Modifications• Repair
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Leg Inspection Criteria• Toleranc
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Re-Use of Gin Pole Fasteners
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Bridle and Basket Forces• The gin
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Gin Pole Design Method• ASD - AIS
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Gin Pole Free Body Diagramsfor Engi
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Impact Factors for Gin Poles(Im)•
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Load Line in Center of Pole• Rest
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Rooster Head
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Track Loading and Design
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Support Conditions Affect Gin PoleC
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250’ Tower-Strength RequirementsC
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Guy Anchor Rod CorrosionFoundation
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Tower Failure due toAnchor Rod Corr
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Under ground and thus undetected gu
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Why does Steel Corrode?• If this
Page 107 and 108:
Basic Corrosion CellInternal or Ext
Page 109 and 110:
Causes of Electrical Current• Dif
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External Corrosion caused byDissimi
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Internal Corrosion caused byDissimi
Page 115 and 116: Internal Corrosion caused by dissim
Page 117 and 118: Why doesn’t hot dip galvanizing p
Page 119 and 120: How to Evaluate Corrosion Risk Prob
Page 121 and 122: Three ways to report Soil Particle
Page 123 and 124: Aggressive Soil TypesFrom Geo-Tech
Page 125 and 126: Moisture ContentFrom Geo-Tech Repor
Page 127 and 128: Hydrogen Ion Activity (pH)From Geo-
Page 129 and 130: Soils with SulfurFrom Geo-Tech Repo
Page 131 and 132: Visual and Agriculture DataWater Le
Page 133 and 134: Visual InspectionEvaluate Site Soil
Page 135 and 136: Another easy way to view soil class
Page 137 and 138: Visual InspectionBacteria sources,
Page 139 and 140: Visual InspectionLook for evidence
Page 141 and 142: National Pipeline Mapping System (N
Page 143 and 144: Soil Properties, On Site TestingMeg
Page 145 and 146: Predicting Active Corrosion Cell by
Page 147 and 148: Predicting Active Corrosion Cell by
Page 149 and 150: • Hand digging around anchorshaft
Page 151 and 152: Limited ExcavationGround LevelMud
Page 153 and 154: Total Excavation• Expensive• Ca
Page 155 and 156: Ultrasound: Longitudinal Wave
Page 157 and 158: Ultrasound: Limited Surface Area, s
Page 159 and 160: Field Application of Longitudinal W
Page 161 and 162: Ultrasound: Shear Wave,also called
Page 163 and 164: Ultrasound: Shear WaveLoud Entry No
Page 165: Making Longitudinal Wave Work
Page 169 and 170: 20’ x 2-1/2” dia Rod, 25% x-sec
Page 171 and 172: Ultra Sound Field Results
Page 173 and 174: Concrete Encasement• Associated P
Page 175 and 176: Associated Problems• Difficult to
Page 177 and 178: Sacrificial AnodesAssociated Proble
Page 179 and 180: A Better Sacrificial AnodeMAG-Rod b
Page 181 and 182: Summary• Corrosion begins when th
Page 183 and 184: SummaryUltra Sound is the most prom
Page 185: Construction Standards&Guy Anchor R
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ANSI/TIA-1019 DRAFT - Inti

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