ANSI/TIA-1019 DRAFT - Inti

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Non-Operational Wind LoadsDuring ConstructionConstruction PeriodContinuous work periodLess than 24 hours(overnight conditions)Minimum Factor0.50 (0.5 x 90 mph = 45 mph)0.60 (54 mph)24 hours to 1 week 0.67 (60 mph)1 week to 6 weeks 0.75 (67.5 mph)6 weeks to 6 months 0.80 (72.0 mph)Greater than 6 months1.00 (90 mph)Wind Speeds are 3-Second Peak Gust
Tilted Gin Pole Use to be Covered
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Tower Construction, Tower Standards
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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
Page 21 and 22: Qualified Person• Have met all th
Page 23 and 24: Rigging Plan Requirements• A rigg
Page 25 and 26: Rigging Plan ClassificationsClassDe
Page 27 and 28: Climbing Facilities• Maintain the
Page 29 and 30: Types of Hoist AnchorageLoad LineHo
Page 31 and 32: Supporting Structural Loading Durin
Page 33 and 34: Guy Wire Installation• Guy wires
Page 35 and 36: Guy Anchor Temporary Support• Sli
Page 37 and 38: Slippage Connections• When fricti
Page 39 and 40: Temporary Backup System• The back
Page 41 and 42: • Block forces transmitted to the
Page 43 and 44: Lifting Existing Loads from Structu
Page 45 and 46: Gin Pole Operation and Use• Scope
Page 47 and 48: Monitoring a Lift• Load Testing
Page 49 and 50: Tip DeflectionHelps VerifyLiftedLoa
Page 51 and 52: Changing Degrees to InchesHface
Page 53 and 54: Special Engineering Lift1. It is th
Page 55 and 56: “Special Engineered Lifts” can
Page 57 and 58: Shot Thru Transit
Page 59 and 60: Load off the Ground with Minimum Ta
Page 61 and 62: Regular Tag Situation
Page 63 and 64: Bridle Slings• Controls the stabi
Page 65 and 66: Straight and Trolley Tag Systems
Page 67 and 68: Controlling the Load Line
Page 69 and 70: • Conditions in which thestructur
Page 71: Operational and Non-Operational Win
Page 75 and 76: Repairs and Modifications• Repair
Page 77 and 78: Leg Inspection Criteria• Toleranc
Page 79 and 80: Re-Use of Gin Pole Fasteners
Page 81 and 82: Bridle and Basket Forces• The gin
Page 83 and 84: Gin Pole Design Method• ASD - AIS
Page 85 and 86: Gin Pole Free Body Diagramsfor Engi
Page 87 and 88: Impact Factors for Gin Poles(Im)•
Page 89 and 90: Load Line in Center of Pole• Rest
Page 91 and 92: Rooster Head
Page 93 and 94: Track Loading and Design
Page 95 and 96: Support Conditions Affect Gin PoleC
Page 97 and 98: 250’ Tower-Strength RequirementsC
Page 99 and 100: Guy Anchor Rod CorrosionFoundation
Page 101 and 102: Tower Failure due toAnchor Rod Corr
Page 103 and 104: Under ground and thus undetected gu
Page 105 and 106: Why does Steel Corrode?• If this
Page 107 and 108: Basic Corrosion CellInternal or Ext
Page 109 and 110: Causes of Electrical Current• Dif
Page 111 and 112: External Corrosion caused byDissimi
Page 113 and 114: 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
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Aggressive Soil TypesFrom Geo-Tech
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Moisture ContentFrom Geo-Tech Repor
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Hydrogen Ion Activity (pH)From Geo-
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Soils with SulfurFrom Geo-Tech Repo
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Visual and Agriculture DataWater Le
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Visual InspectionEvaluate Site Soil
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Another easy way to view soil class
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Visual InspectionBacteria sources,
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Visual InspectionLook for evidence
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National Pipeline Mapping System (N
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Soil Properties, On Site TestingMeg
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Predicting Active Corrosion Cell by
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Predicting Active Corrosion Cell by
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• Hand digging around anchorshaft
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Limited ExcavationGround LevelMud
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Total Excavation• Expensive• Ca
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Ultrasound: Longitudinal Wave
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Ultrasound: Limited Surface Area, s
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Field Application of Longitudinal W
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Ultrasound: Shear Wave,also called
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Ultrasound: Shear WaveLoud Entry No
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Making Longitudinal Wave Work
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Limiting Factors in using Ultra Sou
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20’ x 2-1/2” dia Rod, 25% x-sec
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Ultra Sound Field Results
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Concrete Encasement• Associated P
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Associated Problems• Difficult to
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Sacrificial AnodesAssociated Proble
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A Better Sacrificial AnodeMAG-Rod b
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Summary• Corrosion begins when th
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SummaryUltra Sound is the most prom
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Construction Standards&Guy Anchor R
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ANSI/TIA-1019 DRAFT - Inti

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