CAD system: 3D promises a revolution: Four-dimensional design, automated survey, robot construction, and life cycle data control are the new world in highway construction

摘要

"Sure," you say, as the engineer reaches over with the mouse and drags the road alignment to a new position until he is satisfied. It is not so troublesome; all the details come with it including the road signs and lighting, the other furniture and the drainage. Cuttings are recalculated. Behind the scenes the quantities are redone and the costs amended. Details can be adjusted in the office. New bridges can be pulled from the library of designs and rapidly be dropped into positions. And it will be no more of a problem to amend the tenders either - these after all are posted electronically on the Internet or can be sent out on CD.