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.
Though you might not think it from the comic, I’m actually sympathetic to questions about tools and process, as I myself am a kind of process junky. I love hearing about how other writers work.
I’m also not someone who dismisses questions about tools with the line “the tools don’t matter.” In fact, I think tools matter so much that if you don’t talk about them correctly you can do some damage.
...What I love about John Gardner and Lynda Barry is that they believe that the tools you use do matter, but the point, for them, is finding the proper tools that get you to a certain way of working in which you can get your conscious, mechanical mind out of the way so that your dreaming can go on, undeterred.
You have to find the right tools to help your voice sing.