Routine design When we think of bridges, it is the dramatic and monumental long spans that come to mind first, especially the lithe suspension bridges such as the Golden Gate and the pure geometric arches such as Sydney Harbour. But the majority of bridges are not such spectacular structures. Most of them are ordinary overpasses, with spans of 30 or 40 feet, carrying roadways or rails across other thoroughfares or over small streams. You see such bridges by the dozen on any drive down the Interstate. They may be lacking in glamour, but they are more representative of a bridge builder's art. The engineering and construction of girder bridges are pretty routine these days, but the bridges are not quite standard items you order from a catalogue. The girders, whether of steel or concrete, are custom-build for each bridge, then trucked to the site and hoisted into place with a crane. The designer still has scope for variation and creativity, and it shows out on the highways: some overpasses are prettier than others. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape engineeringdesignautomationroutine
Irwin Volumes Show image 0 Show image 1 Show image 2 Show image 3 Show image 4 Black Line Volume, String Line-Light Volume, Corridor String Piece, Line Rectangle "The resultant black rectangle was not what you "looked at" – there was actually nothing to focus on – but soon it brought the space into focus with a distinct visual snap. From inside, the light in the area seemed different, more substantial, and the wall color began to shift ambiguously. From outside the area, the tape seemed to lift the plane of the floor upward in your field of vision, and it also made the room seem wider and shallower than it really was." — Roberta Smith Robert Irwin, Robert Irwin: A Conditional Art You are the one that is changed