Topography                                            

NavTech has prepared hundreds of topographic surveys for projects ranging from individual lots to parcels of land over 1000 acres. Topographic surveys have been performed by conventional methods for many years. We have always been a leader in developing and embracing innovative methods to improve the product that we provide for our clients. Topographic surveys are no exception. Our pioneering use of GPS and implementation of Real Time GPS surveying in topographic surveys are evidence of our commitment to providing our clients with the most accurate, cost competitive and timely surveys in the industry. We were chosen by several of the largest commercial developers in the nation to provide topographic surveys, boundary surveys, construction surveys and ALTA title surveys. Topography surveys are the basis for most projects. It shows to scale the horizontal positions of contour lines, natural features, roads, and structures. They will often include boundaries, coordinate lines, survey control marks, spot elevations, true and magnetic north, and other features. Vertical and horizontal control systems are established in order to conduct this type of survey.

At NavTech we've been utilizing GPS for topographic surveys since the early 1990's. We've found that this is more efficient and accurate than conventional surveying methods. However, depending on the size of the project, aerial topography may be more cost effective. These type of surveys can also be used to calculate quantities of materials that either have been moved or need to be moved, to determine sectional thickness, and to monitor the shifting of fill. This monitoring occurs for months to years later. We have performed topography surveys for land development projects and our base mapping has been used for the design of power plants, large warehousing, manufacturing plants, commercial retail, residential developments, highways for the Pennsylvania Department of Transportation, schools, railroads, cellular towers, transmission lines, pipelines and environmental projects. Topography surveys are also used to calculate quantities. We perform these surveys on landfills to check the volume of space available for refuse. Contractors also use these type of surveys to check the balancing of dirt moved when large volumes are being relocated. Soil and shoreline erosion can be monitored with topography surveys. We have also used these type of surveys to calculate material stockpiles at construction sites.