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 CYCLE OF GOODNESS® is the corporate philosophy established by YKK’s founder, Tadao Yoshida, who believed that “no one prospers without rendering benefit to others.” It expresses the basic belief of the YKK Group. Tadao Yoshida firmly believed that business belongs to society. As an important member of society, a company survives through coexistence. When the benefits are shared, the value of the company’s existence will be recognized by society. When pursuing his business, Mr. Yoshida was most concerned with that aspect and would find a path leading to mutual prosperity. He believed that using ingenuity and inventiveness in business activities and constantly creating new value would lead to the success of clients and business partners and make it possible to contribute to society. This type of reasoning is referred to as the CYCLE OF GOODNESS® and has always served as the foundation of our business activities.