The legs of the tower are constructed from steel sheets that are rolled into tubes and joined together with bolted flanges. The thickness of the tubular legs can be reduced as they reach the top of the tower to decrease weight and costs since less material is needed higher up where loads are lighter.

1. Detail of tower legs.
The legs of the tower are rolled from steel sheet and
joined at bolted flanges.
The wall thickness of the tubes can be reduced
toward the top of the tower to reduce weight and cost.
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