Bog Crane

Bog Crane is the second high-voltage pylon in the Estonian electricity infrastructure designed by PART Architects. The mast is based on the same principles and visual identity as its predecessor and adapted to its location's environment and line characteristics. It is a caring tower in a straight section of the power line system and carries 3x 330kV, 3x 110kV and two earth wire cables.

The structure consists of a primary member and three additional support leg members. Each one is divided into various sections with each individual section built out of rolled plates with constant thickness. All four members are then supported by four pinned connections attached to four isolated foundations with high strength anchor bolts.