Modelling a H frame double pole

Modelling a H frame double pole

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Distribution and transmission lines may be supported by an H frame double pole arrangement.

Double poles with bracing. Image from Google Streetview.

This example includes wire bracing between the poles. Poles may be unbraced or have a variety of arrangements of bracing.

If you need to assess an existing pole you will probably not be able to accurately determine if the bracing is effective. A conservative approach will be to consider the poles as unbraced.

Unbraced poles can be modelled in Poles ‘n’ Wires as a single pole with twice the strength of the single pole. If you need to include wind loading on the pole you will need to work out the average equivalent diameter—don’t just double the diameter.