Important features of the Powerbeam are:

The main function of the beam is to bridge the gap between the sound sections of the pole below and above ground level.

Therefore the bending and torsional strength of the beam have to be sufficient to withstand the various loads arising from wind. conductors, maintenance, etc., normally applied to a pole. The bending strength is provided by the cross section acting as a beam with two principal axes of bending.

The torsional strength, which is required both during erection of a powerline and when a single conductor fails, is provided mainly by the beam’s tubular spine.

Extensive Testing

All Powerbeam systems (supporting components separately) have been extensively tested to destruction. both in laboratory conditions and in the field where gradual failures were observed.

Professor Noel Murray:

“It is important when testing to consider all modes of failure. The omission of only one failure mode from this scrutiny can lead to collapse of the structure.
The history of structural engineering has many examples in which the failure of one small element has lead to the collapse of the much larger structure.
In the case of the Powerbeam Reinstatement system the potential failure modes of bending in all directions, torsion about the axis of the pole, buckling and warping have all been considered”.

The ultimate strength of each Powerbeam system was calculated using plastic theory and the results were confirmed by field testing.

Installation of Powerbeam

The Powerbeam Installation process is quick, efficient, and is a go anywhere system. The Powerbeam offers approximately the same strength in all directions.

This enhances installation capabilities by placing the beam in the most convenient position around the pole thus avoiding underground services and above ground assets.

The articulated tractor rig makes it possible for installations to be performed in suburban and built up areas, off-road rural situations including steep gradients or even flooded marshlands.

The installation rigs are manned by two man teams who are extensively trained to adhere to regulatory requirements and OH&S.
It is usual for an installation crew to complete 8 to 10 reinstatements a day.