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
The Sheaves A Poem by Edwin Arlington Robinson www.poetrynook.com Where long the shadows of the wind had rolled, Green wheat was yielding to the change assigned; And as by some vast magic undivined The world was turning slowly into gold. Like nothing that was ever bought or sold It waited there, the body and the mind; And with a mighty meaning of a kind That tells the more the more it is not told. So in a land where all days are not fair, Fair days went on till on another day A thousand golden sheaves were lying there, Shining and still, but not for long to stay— As if a thousand girls with golden hair Might rise from where they slept and go away. farmingseasonschangemelancholy