AutoCAD Civil 3D

[#1]

Hey guys hope you still drop by here, today is not very productive day for me in my earthworks. I was convinced there are no other ways for me to have that horizontal areas. So i was just forced to use the elevation banding analysis, for now.

The contour-intersecting for existing and design  from Mr. Troma didnt satisfy my minimum distance of surfaces polyline. The contour just spreading but not following the polyline of "cut-fill intersection".

I could not use also the plane surface technique and raising it at 15cm increments. This is due to I could not locate the location of starting point of backfill. If it is profile type this could be good but since it is spread earthworks, it is very tedious locationg that point.

If I will use the lowest point elevation for my plane surface, and raise this surface to of 15cm increments until the highest point elevation of design, I will be coming up with so many range.

Hoping we could come up with new ideas.

[#2]

Neil I'm not familiar with the dashboard, is that new since 2011?

[#3]

It appeared as a Subscription only Add on in 2012 but is now integrated into 2013 (and indeed the ReportSurfaceVolume icon has been replaced by the Dashboard in the Standard C3D setup, unless you are me, in which case it hasn't)

[#4]

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edgardocalixto81 wrote:

Hey guys hope you still drop by here, today is not very productive day for me in my earthworks. I was convinced there are no other ways for me to have that horizontal areas. So i was just forced to use the elevation banding analysis, for now.

The contour-intersecting for existing and design  from Mr. Troma didnt satisfy my minimum distance of surfaces polyline. The contour just spreading but not following the polyline of "cut-fill intersection".

I'm not quite sure what you mean.  What is "my minimum distance of surfaces polyline"?  I was imagining that if you have a contour on existing ground at 25.62m and a contour on proposed ground at 25.62m, these two contours would intersect at the matchpoint where your proposed meets existing.  Does this not happen?  Do you have your proposed ground matching existing at the edge?

I could not use also the plane surface technique and raising it at 15cm increments. This is due to I could not locate the location of starting point of backfill. If it is profile type this could be good but since it is spread earthworks, it is very tedious locationg that point.

You could use elevation banding analysis on the existing surface to help locate this point.  Or if the surface was built from cogo points, you could sort the points be elevation to find the lowest ones, and use the "zoom to" command to find them in the  drawing.

If I will use the lowest point elevation for my plane surface, and raise this surface to of 15cm increments until the highest point elevation of design, I will be coming up with so many range.

 If your depth was 1.35m as shown previously, you will have 9 ranges.  That's not so many.

Hoping we could come up with new ideas.

I feel it we pretty much need to create slices of an AutoCAD solid object, rather than working with TIN volume surfaces. This is outside of what I can help you with.

Another option that may help a little: create a copy of existing ground surface, and add the boundary of your proposed ground to it.  Then extract the 15cm contours from that surface.  This way they will only go up so high as necessary, and be trimmed off automatically at the intersection of the surfaces.  This assumes that your proposed ground surface is designed to match the existing ground all the way around the perimeter.

[#5]

minimum surface distance is a new command for civil 3D sir, im using 2013, this is the 3d line (actualy a 3d line not polyline my mistake) that created from the intersection of cut and fill along the whole plot. the contours created from EG and Design surface are not  meeting in this 3dline.

The location of the deepest fill should be the first fill layer. But not necesarily on the lowest point in ground.  Also the location of this deepest fill is not on one location only, it is scattered all along the whole plot. 

The depth of 1.35 is just a part of the grund Sir. The whole area is approximately 425,000 square meter Sir. divided by 12 plots, each will have a independent fill layer data.

[#6]

edgardocalixto81 wrote:

minimum surface distance is a new command for civil 3D sir, im using 2013, this is the 3d line (actualy a 3d line not polyline my mistake) that created from the intersection of cut and fill along the whole plot. the contours created from EG and Design surface are not  meeting in this 3dline.

Ok, I'm going to ask again: does your proposed ground meet the existing ground all around the perimeter of the site?

If it does not, then your volumes are not reflecting the 'match' that will be made in real life.

If it does, then the minimum distance between surfaces should be zero, and should be reflected by the 0m contour on your volume surface.  And the contours of existing and proposed at the same elevation should also meet at this line.

The location of the deepest fill should be the first fill layer. But not necesarily on the lowest point in ground.

I thought you said before that the fill needed to be placed horizontally?  If so, then surely you do need to start at the lowest location, even if you only need to place one lift in that location.  If you start at a higher location just because it needs 5 lifts there, how can the fill be placed horizontally?  Instead it will be placed at whatever grade the existing ground is at.  Is that what you're intending?

 Also the location of this deepest fill is not on one location only, it is scattered all along the whole plot. 

Ok, good point.  This is a obviously a large and complex site.  It will take some work to find/design the fill locations.

The depth of 1.35 is just a part of the grund Sir. The whole area is approximately 425,000 square meter Sir. divided by 12 plots, each will have a independent fill layer data.

Sounds like a lot of work.  I hope we can help you find a way to automate as much as possible!

[#7]

Ok, I'm going to ask again: does your proposed ground meet the existing ground all around the perimeter of the site?

If it does not, then your volumes are not reflecting the 'match' that will be made in real life.

If it does, then the minimum distance between surfaces should be zero, and should be reflected by the 0m contour on your volume surface.  And the contours of existing and proposed at the same elevation should also meet at this line.

The three "line" (EG contour, DES contour and the zero cut-fill meeting lines) but they are not on the same directions (like the EG contour is circular and the DES contour is like lines only). that's why I tell they are not conforming with the Zero Elev line diagram.

I thought you said before that the fill needed to be placed horizontally?  If so, then surely you do need to start at the lowest location, even if you only need to place one lift in that location.  If you start at a higher location just because it needs 5 lifts there, how can the fill be placed horizontally?  Instead it will be placed at whatever grade the existing ground is at.  Is that what you're intending?

The area I am working Sir is not only fill. They are also cut locations. The lowest point in the ground of each plot maybe cut or maybe in 0.05 fill or maybe 1m fill.

Ok, good point.  This is a obviously a large and complex site.  It will take some work to find/design the fill locations.

Sounds like a lot of work.  I hope we can help you find a way to automate as much as possible!

I have nothing to say but thanks Sir, the official submittal is nearing soon however.