A new method of laying-out excavation cutting with total stations

Some functions, i.e. laying-out of coordinates, elevation, subtense and coordinates determination, can be carried out by using of total stations, in which the mathematic model of laying-out excavation cutting with coordinates method is derived. And the traditional distance-approaching method by setting-up instruments on midpoint is ameliorated to a coordinates-approaching one , in which the instruments can be set up freely. Meanwhile, The complicated computation of the laying-out procedures can be accomplished by means of PC-E500S or CASIO calculators to make the laying-out operation various and productivity improved obviously.