Hi,
I want to create a detention pond that is flat along the bottom, but then has a few layers along the side. The first layer is 12 feet above the bottom at a slope of 4:1. The second layer is at a 6:1 slope and is 6 feet above the first layer. Then, there is a 10 foot flat section along the top. And lastly, it would tie in to the existing ground.
Any ideas? I don't really care about particular slopes or anything; I'm more looking at how I can make a pond/basin civil cell that has more customization than the Basin civil cell that is included with the program. Below is a sketch viewed from the side of an example. Thanks
Seems pretty straight forward. You would need to construct the 3 elements with the horizontal and vertical rules you detail in your example above. Then add them to a civil cell. For example place the Layer two element 48 feet offset from bottom (reference element) then apply a vertical profile to it at a 4:1 slope from the bottom. Next create another element 36 feet away and apply a profile based on a 6:1 slope from the first and so on.
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Ok thanks. Yeah, I think I'm figuring out more about creating Civil Cells now. I just created one with all the layers. It looks like it's supposed to. I'm not sure about other things like Surface Templates or whether I would be able to measure the volume of it yet. I'll work on it again tomorrow. Thanks for your help.
Surface Template would be used once the Pond is a surface for possibly putting in layers under the surface that you want to get quantities of like clay liner or stone and such. There is an analyze pond tool available in the Analysis and Reporting Task menu. You select your pond and it provides the volume, depth, area, and top elevation.
Do you know if there's any material or videos out there that would explain how the Basin civil cell was created. If I could understand it, then I could create my own variations of it. I attempted to dissect it, but I wasn't able to figure out how it was made. The cells that I was making yesterday worked fine for the circular basins, but once I started making rectangles or other shapes, the cell no longer worked.
I am not sure about documentation on that civil cell. However when you results did not look right on rectangles did you select a different alternative once you selected the reference element. The prompt allows you to data point for another alternative and that will most likely provide you a better result.
Yeah, there were no alternatives available.
Instead of highlighting like this >
It highlighted like this >
I'll keep looking into it.
Basin.dgn
This file has a cell in it as you described. see how it reacts to the rectangle.
Awesome! Thanks.
Here's a rectangle and a triangle with your cell. I also realize that I wasn't clicking in the right area when trying to cycle through alternatives when placing the cell.
The only issue, which probably isn't related to the civil cell, is that when I try to create a closed shape like a rectangle or a triangle, after I put a profile on it and apply the civil cell, there is a gap in the closing corner of the shape. Maybe I don't understand how to create closed shapes in OpenRoads.
My process was to use the Horizontal task Line Between Points to create a series of snapped segments and then to snap the end of the final segment on to the beginning of the first segment in order to close the shape. Then I Complex them together and add a profile to it (I've been using Profile from Surface). When I then view the shape in the 3D model, there is no gap at that point. However, if I create offsets from that shape, a gap is created in the 3D view.
Similarly, the layers of the civil cell that are offset from the bottom one have a gap in them.
An oval shape works fine, though.