Information and Misinformation – 2

Many comments made by those opposed to the transmission line route known as Option A centered on the appearance of poles – height, type of materials, diameter of base etc.

Talking with Connie Kaprowicz from Water & Light, we learned that these questions hadn’t been fully settled when progress on Option A was stopped by the City Council. To the contrary, questions of location and appearance were what public comment was being sought on.

We asked Connie the following questions:

1C1C: What decisions had been made about poles and pole placement when the Council put Option A on hold?

W & L: When the project was stopped by the City Council, we were at the 30% design phase of implementing Option A. This is the stage where we decide where the poles could be located and what type of poles should be used. We held an open house for the purpose of getting public input on proposed locations and pole types. We never got to the point that these details could be finalized.This quickly turned into an issue of whether we should build lines along Option A at all rather than the evaluation of proposed locations and pole types.

1C1C:  What are the different options for pole types?

W & L: There are a lot of different pole options as shown in these slides which were shown to the City Council on January 19, 2016 (slides 51-66 from Council presentation). Note that with the steel structures, the wires are higher above ground, guy wires are not required, and fewer poles are required along a route. If wood poles were used instead of steel poles, it would result in an increase of 55.9% in the number of poles compared to steel poles).

Here is a summary of key differences between construction with steel and wood poles:

Steel vs. Wood Overview

Steel Pole Construction

  • Engineered material; consistent, controlled properties
  • Reduced safety factors required
  • No height or span limitations
  • Self supporting angles and dead-ends
  • More flexibility during design
  • More flexibility during construction
Wood Pole Construction

  • Natural material; varying properties
  • Height & span limitations – more poles required
  • Angles & dead ends are not self-supporting; require down guys – more intrusion on properties/easements
  • Limited design adjustments during construction

 

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One thought on “Information and Misinformation – 2

  1. Pingback: Information, Misinformation, Statesmen and Politicians | One Community One Columbia

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