The present invention provides a method for updating a site database. The site database models the elevation of a work site using a Triangular Irregular Network (TIN). The TIN is composed of a plurality of points. Each point has associated known X and Y coordinates and a known elevation and...http://www.google.com/patents/US5735352?utm_source=gb-gplus-sharePatent US5735352 - Method for updating a site database using a triangular irregular network
