Not all the towers along a transmission line are identical. Look closely at a tower where the line makes a sharp turn and you will likely find it is wider and beefier than other towers along the route. The added strength and weight are needed to resist the unbalanced pull of the conductors, which might overturn an ordinary tower. These special towers are called deviation or angle towers.
The transmission-line tower everybody knows is an Erector Set latticework of steel girders and diagonal braces. The techniques for designing and building these towers are the same ones used in constructing steel bridge trusses or crane booms. The individual pieces can be made cheaply from rolled steel and then bolted together on the site. This last point is more important than it might seem: transporting a fully assembled tower 100 feet tall is an awkward and expensive business.
"The art world is highly invested in the idea that you can take an object and set it in a room, and the internal relationships will be so strong and so meaningful that all the kinds of change that take place on the object as a result of its being in a new environment will not critically affect our perception of the object. If that is the given assumption, then the object can be moved from one environment to another without its being critically altered, which then gives rise to the illusion that it can be moved from culture to culture, that it has the ability to transcend its cultural specificity, which in turn gives rise to the ultimate illusion that the object can transcend time. Because what is being claimed is that there exist certain objects isolated and meaningful enough to be transcendent, that they have the power to go on and on, that they are, as it were, timeless.
"Well, one of the things that I was becoming involved in at that point in playing artist was the growing suspicion that this breaking down of the edge, the idea of the painting's moving into its environment, was putting the whole heightened rationale of the art object into doubt. There is simply no real separation line, only an intellectual one, between the object and its time environment. They are completely interlocking: nothing can exist in the world independent of all the other things in the world."