***leveling a surface***

[s.sajjad.jafari]

Dear friend,

We want to level a surveyed surface by civil 3D for farming purposes and then stake it out. you can see the surface in following pic 

what i need is the leveled surface using mean elevation of the raw surface in order to equal the cut and fill volumes. The leveled surface should have a Grid defined on it to make it easy to get the coordinates and their relevant elevations to make it possible to stake it out by Total stations.

How can i define this leveled surface using mean elevation of EG surface and then get the coordinates and elevations of leveled surface as a grid?

I also attach my file if you need to edit it.

Thanks

[Jeew-m]

Dear Friend,

If I understand you clearly this is the way how I feel to do it.

The mean elevation of your surface can be found from the following.

surface properties-->statics tab---> General

At the initial stage you had some contours to create your surface.

Copy all these contour poly lines in to a separate drawing.

Select all of them and from properties set the elevation of the contours to mean elevation.

Create a new surface from these contours.

Add the boundary of your old surface to this new surface also.

Now you have the level surface with mean elevation.

Export your level surface to land xml.

Import this exported surface to old drawing.

Finally you can create points on surface by a grid.

https://knowledge.autodesk.com/support/autocad-civil-3d/learn-explore/caas/CloudHelp/cloudhelp/2016/...

I an not sure whether this is what you need.  

Anyway Others might have much better ideas.

Thanks

[s.sajjad.jafari]

The properties set doesn't let to change the elevation of all contours at once. How can i change the elevation?

[Jeew-m]

Turn off the points and triangles of your surface. 

Then you will only see the contours. But they are 3D polylines.

Copy all of them to a separate drawing.

Then convert 3D polylines to 2D polylines.

https://knowledge.autodesk.com/support/autocad-civil-3d/learn-explore/caas/CloudHelp/cloudhelp/2017/...

Then select all the polylines and now you will be able to set the elevation at once.

Create the surface as said before.

Thanks

[MikeEvansUK · Accepted solution]

I would create a long section and sections at intervals to get a feel of the land first.

The boundaries won't be on the same plane (level) so you may need to design a platform which rises/falls along the length. Create a flat or linear profile detailing the platform level and see what it does, also look to see the level difference across the sections and see what it looks like.

Depending on how flat you want the land will assist in how you move forward however remember that you will need to tie into the existing ground around the perimeter so:

I would next create a polyline around the boundaries of the site, convert to a featureline and obtain the levels. When doing this try to make sure you are not cutting across ditches or banks / mounds etc.

Next on another civil3d site export your created profile as featureline and create a grading with surface to the falls you worked out earlier. Hide these in the model.

Using the boundary feature line create another grading with surface, turn volumes on and specify the existing ground. Now grade from the boundary inwards to the other surface (swap before in the toolbar) at a desired slope. Create an infill in the middle to create the platform to fill in the gaps.

Next using the volume tools (ensure that the surface is correctly set to existing) look to see the volumes you have obtained. Next I would personally create a volume surface of the existing Vs this grading surface and change the other surface's level by raising or lowering the controlling surface until I get a desired balance of material.

Obviously depending on the ground strata you may want a desired quantity of fill for better soil so you may need to thing about that by designing the final level higher than that.

Hopefully this will make sense.

Mike

[s.sajjad.jafari]

I think your solution is the best cause for preparing the land for farming purposes, we need slope along the field but unfortunately i couldn't get what you exactly did by just reading your instructions.

Is it possible to have a YouTube video about a specific surface to

see how you do this?

so appreciated if you do this for me @MikeEvansUK

[kuguzevu]

Please, I would appreciate it if you can do a video that explains what you narrated above. I have been struggling to level a surface.  Like you said the platform might not be on the same plane, thank you in advance.

@MikeEvansUK 

@s.sajjad.jafari