A utility’s proposed re-conductoring loading exceeded the existing capacity of the steel lattice structures for this transmission line under current code requirements. The utility requested options to support the new loading.
The existing transmission line and lattice structures were analyzed with three unique wire configuration options. The required tower reinforcements were then determined. Our solution was to lower the wire design tensions by installing new intermediate support structures between the existing lattice towers. By doing this the existing lattice towers would not require modifications.
The utility proceeded with the option of lowering the wire design tensions by installing new intermediate wood structures between the existing lattice support towers to maintain wire to ground clearance. This solution required no reinforcing to the existing steel lattice structures and resulted in a faster construction process.
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