A topography survey provides a graphical representation of the lay of the land. It shows both natural and man made features using contour lines and elevation points. Contour lines are curved or straight lines that connect points along the same elevation. Elevation points have an x, y, z coordinate and are used to create the contours lines using advanced 3-D computer modeling programs such as AutoCAD Civil 3D. Surface models of the terrain can be created in 2-D or 3-D and can be used to determine the slope of the ground.
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Topography surveys typically include the following items on the drawing:
Topography surveys enable engineers to design buildings with their respective utilities, determine stormwater drainage patterns, determine flood plain limits, determine the volume of an existing detention pond, determine how much cut or fill dirt is required during excavation to minimize excavation costs, etc.
A topography survey is the ideal solution for most all construction projects. For projects requiring more in depth title research, please refer to the ALTA / ACSM Land Title Survey which also offers topographic information.
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Atlanta Engineering provides Topography Surveys