Although these examples all use the number “01” in the extension, RAS can have multiple instances of each of these files for a given project (except the. This post will feature a steady flow example project, and will list common HEC-RAS files that you’ll see for Unsteady flow, Sediment Analysis, Water Quality, and Hydraulic Design projects. Keeping track of these files in an organized manner is good practice, especially as your models grow in size and complexity. It is important to know what each of these files does and how they fit into the overall scheme of your project. Section lines are not imported if the alignment is not imported.Behind the scenes, HEC-RAS automatically creates a series of input and output files when working with a model.If an alignment of the same name and site, as the selected stream alignment, does not already exist in the drawing, then it and the section lines are also imported.The flood elevation profiles are imported into the drawing and are visible in Prospector.The section lines are imported only if the alignment is imported. They are created on layers using the convention. These lines show where the top water surface intersects each section (according to the HEC-RAS application). The section data is imported as line objects along the alignment.This is designed to allow multiple iterations within the HEC-RAS application without having to manually delete profiles in AutoCAD Civil 3D when you bring in updated data.
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