Quick Pole Verification

Many situations exist where the Groundline elevation of the structures or the wire attachment heights are different. This creates a situation where the maximum sag point is no longer exactly mid-span and the tensions at both ends become different. Since many code clauses have requirements for mid-span clearances and separations, the possibility that the attachment of a wire is higher at one end than the other should be taken into account for the least error. If a software tool cannot address un-level spans, the supplier should note this in their compliance matrix.

The ability of a software tool to handle un-level spans can be demonstrated with fewer tests than required for basic Sags & Tension calculations. The following tests are suggested:

1. One medium sized wire from each of the Level Span categories and using the same stringing condition.
2. 60 meter span, CSA Heavy Loading condition
3. Attachment Point elevation differences:
1. One meter
2. Three meters
4. Reporting of the following results:
1. Maximum Horizontal Tension under CSA Heavy Loading
2. Maximum Vertical Load on both supporting poles; under any condition
3. Maximum Vertical Sag value and the distance from the lowest pole where this occurs; under 100 °C assumed Thermal conditions

 

Unlevel Span Tests

The results of Quick Pole have been compared with PLS-CADD and found to be in very close agreement.

Download the Quick Pole project file to duplicate the results shown above.