USF Overhead Design Training – November 6-7, 2023 (IN PERSON) – Non-Member Registration
Event Date:
Overview
*** This is the in person offering of this course.***
This is a 2-day course intended for newer Engineering Techs, concentrating on overhead design.
General
The Distribution System
o Electrical Fundamentals – nature and behavior of electricity as it applies to a power / distribution system
o Layout, equipment, operational considerations
Components
o Primary Conductors
o Secondary Conductors
o Framing
o Line Layout
o Pole Selection
Regulation 22/04 and Safety Considerations
o CSA Separations, Clearances – various conditions, vegetation, spacings
o Grounding
o Bonding
o Insulating
o CSA Storm Loading Categories, Storm Loading Map, Safety FactorsDesign
Considerations
o Regulations – water sources, crown land, navigable water, railway
o Locates
o Easements
o Determining Pole Height
o Pole Line Grading
o Physical pole location, determining height, line grading, soil conditions
o Pole top extensions – services, primaries
o Future Proofing the Pole
o Joint Use Agreements, Third Party Attachments, Make Ready – municipal attachments
Structural Design
o Mechanical fundamentals
Vertical loads, span angle calculation, transverse load on a surface, on structures
USF Section 5 – Pole Strength
o Framing
o Line Layout
Spotting / staking
o Pole Selection
Material, length, strength
Guy and Anchor
Elements of a Guying System
Dead End Guying Calculation
Guying Triangle
Max Guy Lead, Force on Guy Wire
Selection of anchors, guidelines, types, soil types and anchor choices
Examples
Chart methond, spreadsheet method
Unguyed poles
Guyed poles
Pole buckling
Line taps
Stress in pole from bending
Stress in pole with guyed tap
Long span with side guyed poles
Complex crossing poles
Pole class selection
Ruling span
o Strain, catenary constant C, sage, slack
Connectors
Grounding
Analysis
o Linear, Non-Linear
o Initial load assessments
o Fibre Stresses
o Stability Analysis
o Sags and Tensions exercise
o Pole Design Examples
Registration
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