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
Prometheus A Poem by Lord Byron www.poetryfoundation.org The lightnings trembledThe sum of human wretchednessMaking Death a Victory Subjected to some great trialA hierarchical system of senseYou find reasons to keep living deathsufferingpain
The lightnings trembled And in thy Silence was his Sentence, And in his Soul a vain repentance, And evil dread so ill dissembled, That in his hand the lightnings trembled. idefiancesilence
The sum of human wretchedness Thy Godlike crime was to be kind, To render with thy precepts less The sum of human wretchedness, And strengthen Man with his own mind; But baffled as thou wert from high, Still in thy patient energy, In the endurance, and repulse Of thine impenetrable Spirit, Which Earth and Heaven could not convulse, A mighty lesson we inherit.
Making Death a Victory Like thee, Man is in part divine, A troubled stream from a pure source; And Man in portions can foresee His own funereal destiny; His wretchedness, and his resistance, And his sad unallied existence: To which his Spirit may oppose Itself—and equal to all woes, And a firm will, and a deep sense, Which even in torture can descry Its own concenter'd recompense, Triumphant where it dares defy, And making Death a Victory. deathdestinyhumanity