A Topographic Survey is a survey that gathers data about the elevation of points on a piece of land and presents them as contour lines on a plot. The purpose of a topographic survey is to collect survey data about the natural and man-made features of the land, as well as its elevations. Topographic maps are used to show elevations and grading features for architects, engineers, and building contractors.
An ALTA Survey is a boundary survey conducted utilizing a nationally-recognized set of standards that have been jointly prepared by the American Land Title Association (ALTA) and the American Congress of Surveying and Mapping (ACSM). ALTA Surveys show changes to the landscape of the property that can include improvements, easements, right-of-way, and other elements impacting ownership of the land. This survey, which is typically utilized by commercial property owners, is designed with the requirements of title companies, lenders, and corporations in mind.
Construction staking includes the process by which surveying principles and instruments are used to locate, layout, and execute construction plans into physical points on the ground that can be used as a basis for actual construction.
Laser scanning is a relatively new technology, having been used as a precise survey instrument only since 1998. Now, it is quickly becoming the new industry standard as a way to make very accurate measurements in complicated environments. This is precisely why using this technology is the best solution for measuring as-built conditions inside buildings. This instrument collects survey data points at a rate of 50,000 points per second. It has an effective range of 400’ to 500’. With several “scan” setups inside a room or of a building, a complete 3D model can be made of the existing conditions. These models are then used to create 2D civil or architectural drawings, 3D computer models, and final survey documents.