“Autodesk Grading Optimization is an interactive tool that facilitates grading various land areas such as sites, road interchanges, and around structures. Here’s the official GO description in Autodesk help file speak. Like the powerful and useful Project Explorer for Civil 3D, Grading Optimization is only included in the AEC Collection license offerings. Grading Optimization was initially released with the Civil 3D 2022 introduction last spring. We will use the water drop method more when we design subdivision streets.Autodesk continues to improve the capabilities and performance of their new design grading application tool – Autodesk Grading Optimization (GO). Or, you can use the layer isolation method to isolate the C-TOPO-WSHD layer and delete them. Then, right-click, Select Similar and press delete on the keyboard.
Now, delete the Water Drop analysis lines (blue lines) by selecting one of them.Zoom in further, and you will notice that most of the runoff from our proposed development is going through existing Pond 2. Meanwhile, the flows from Flower Village Phase 1 are going through Pond 1.We notice that as expected, water is running downhill from the mountainous areas to the lower areas and will ultimately flow down to the river. In the drawing, click on a few points on the surface and observe the flow direction.In the Water Drop window, change the layer to the watershed layer C-TOPO-WSHD and choose 3D Polyline for Path Object Type.On the ribbon, click the Water Drop command for analysis.Select the Prelim-EG surface in the drawing.Zoom to the Hills View named view or manually zoom out using the mouse wheel.We can easily identify low spots on a surface, and install necessary stormwater catch basins in these low spots.
This analysis is especially useful for designing surfaces such as parking lots, subdivision streets, and so forth. The Water Drop analysis allows us to analyze runoff and trace the path that a drop of water would take across a surface.
Working with Civil 3D Water Drop Analysis? 5.6.1 Water Drop Path
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