energy
Tracing Power Lines with the Pylon Appreciation Society
Pylons
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.
A haunting, syncopated music
"Rappers" on the roof of the electrostatic precipitator knock the accumulated dust free, letting it fall into the storage hopper. Each rapper is the size and shape of a baseball bat. Inside is an electromagnet that pulls a steel plunger upward, then allows it to fall again, producing a sharp knock. The rappers are energized at seemingly random intervals, producing a haunting, syncopated music. (The rhythm seemed more modern jazz than rap.)
Safety cut rope axe man
In the first nuclear reactor, constructed by Enrico Fermi in 1942 under the bleachers of the University of Chicago football stadium, the control rods were held up by a manila rope. A man with an axe was told to cut the rope if the reactor got out of hand. This "safety cut rope axe man" is supposedly the origin of the term SCRAM for an emergency shutdown procedure.
Color coding
Telephone wires erupt in a multicolor cascade in a ground-level, pedestal-type splice case on a city street.
Dividing the set of 10 colors into two contrasting groups of 5 allows for exactly 25 combinations with one color from each group; thus, each pair in a bundle can be uniquely colored. A similar color code is applied to the ribbons that bind together all the pairs in a bundle, and to those of the superbundles. The result is highly festive! A specific wire might be identified as the blue-red conductor within the orange-black bundle within the brown-yellow superbundle.
Four principles
The essential purpose of Direct Management, as we understand the term, is to create buildings which are whole. This means that each part of the building is right in relation to the other parts, and to the part of the land that makes the buildings and the land more beautiful.
I will try to summarize the real meaning of Direct Management.
- The design evolves during construction. This means that the form of control over designs does not stop when drawings are finished, but goes on, continuously, before, during, and after construction. This cannot be done if architect and contractor are separate, or consider their jobs separately. It will only happen if the person who controls the design at the beginning actually controls the construction, too.
- Flexible cost control. Cost control requires continuous changing of ideas about what is built, in relation to money that is available, and in relation to what has been done already.
- Experience with one's hands. It is also impossible for an architect to have enough knowledge to control the process successfully, unless they have experienced almost every phase of construction with their own hands.
- Love of craft and the joy in the physical process of making. In the old days, making a building was clearly understood as a work of making. In this word, designing and physically building are inseparable. However, in the modern world, design has become separated from construction. Architects think of their work as designing, on paper, with the idea that the building process is a separate process. This is not what I call making at all. A good building can only be created, when it is deeply understood as something which is made, by a direct connection of the act of making, and the act of feeling, with your hands.