JEEP Posted October 26, 2016 Share Posted October 26, 2016 Hi guys and girls, first time posting. I'm trying to calculate a precise volume of sediment that will be added to a beach. That's called beach nourishment. I know it's weird, I'm a geomorphologist. For now, I have drawn six 3d polylines that represents beach profiles. These 3d polylines were drawn from sets of points with x,y and z coordinates. They all have the same reference. Profiles are apart from each other by about 5 meters. Next step I have done is to draw new profile (3d polylines), with the same x and y coordinates but with a higher z value. These new 3d polylines represent the amount of sediment that will be added to the beach. Finally, I linked all those 3d polylines with each other to create a kind of solid. It's a very irregular solid. My question: Is it possible to calculate a volume (m³ of feet³) within these polylines like I would do with the function Area for a 2d polyline? The .dwg is attached to this message. Any help will be greatly appreciated Thanks a lot Beach nourishment_R.1.dwg Quote Link to comment Share on other sites More sharing options...
BIGAL Posted October 26, 2016 Share Posted October 26, 2016 1 If you have civ3d then its a button press. 2 Other civil software again button press. 3 There is some free software out there. 4 Find some one with civ3d and get volume. 5 May be able to make a solid from two surfaces. Looking at your dwg your second surface is incorrect it should be smooth and hips and hollows removed. Yes you can use end area and get a reasonable answer (a1+a2)/2 * length. Quote Link to comment Share on other sites More sharing options...
JEEP Posted October 26, 2016 Author Share Posted October 26, 2016 Thanks BIGAL, You are right about the second surface. It was a test. The new profiles will be much smoother. Tell me if I'm wrong. In Autocad (not Civil3d), I cannot create a solid from irregular 3dpolylines apart from extruding one of the polylines. I absolutely need Civil 3d if i want to calculate the precise volume of an irregular solid with a Autodesk software. Am I correct? Thanks a lot for your help!! Quote Link to comment Share on other sites More sharing options...
BIGAL Posted October 26, 2016 Share Posted October 26, 2016 I think you can create a 3d surface but thats not an area I do much in so just hang in there, the likes of Remark etc will possibly be able to help. Quote Link to comment Share on other sites More sharing options...
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