Forces in Struss - The Electric Grid

Whats so special about these power grids. A liking from the mechanical engineering (I still remember the days when we will work out the forces in these struss structures in Engineering Mechanics, from a book I remember as Shames) or larger than life steel structure or their Eiffel tower like skeletonous form or the simple fact that they can burn a whole neighbourhood if touched by mistake.... I simply like the fact that these ones stand by itself on a wide landscape stretching to thousands of miles.... carrying all the magnetism around it.