A transmission tower

Lattice Tower Deflection: An Exception to the Rule

Unique loading situations, such as lattice tower deflections, must be examined carefully when planning rebuilds or work on existing structures.

Traditional practice dictates potential deflection of lattice steel towers will not cause structural issues while stringing conductor. However, Los Angeles Department of Water & Power (LADWP) and Black & Veatch recently discovered an exception when the deflection of an existing tower during stringing was enough to impact stringing sequencing. The project in question was part of the LADWP’s Barren Ridge renewable transmission project (BRRTP), built to expand power-delivery capabilities

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