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
I recommend eating chips An Essay by Sam Anderson www.nytimes.com Join me. Grab whatever you’ve got. Open the bag. Pinch it on its crinkly edges and pull apart the seams. Now we’re in business: We have broken the seal. The inside of the bag is silver and shining, a marvel of engineering — strong and flexible and reflective, like an astronaut suit. Lean in, inhale that unmistakable bouquet: toasted corn, dopamine, America, grief! We are the first humans to see these chips since they left the factory who knows when. They have been waiting for us, embalmed in preservatives, like a pharaoh in his dark tomb. Looking Closely is EverythingOne brick seeingdetailsfood