AutoCAD Civil 3D :: Detention Pond Contours Not Correct

Dec 11, 2012

I have 2 feature lines, one is at elevation 132 (TOB), and the other at 123 (TOE).  I inserted elevation points at an increment of every 3 ft., which should make a smooth arc of contours around the pond.If the issue was resolved by this method, please click on "Accept As Solution".

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AutoCAD Civil 3D :: 2013 SSA Detention Pond Peak Outflow Results

Jan 2, 2013

Attached is my 1st project using SSA for detention pond design.

Where is the best place to view the results for the detention pond peak outflow and maximum HGL?

Also, the program seems to separate the results per year storm...anyway to view the results for all year storms in the same report?

how do you attach the .spf file?

2013 Civil 3D

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AutoCAD Civil 3D :: Surface Contours Correct With One Layer State

Apr 9, 2013

I have a surface that shows perfectly when restoring the PCSM layer state (Old LMAN function). When I restore the Grading layer state - the surface contours show incorrectly.

It is like a hide or mask feature turns on and off.

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AutoCAD Civil 3D :: Composite Surface Of Existing Surveyed Contours As TIN Pasted Into Existing Aerial Contours

Nov 15, 2012

Some background: We have a composite surface of existing surveyed contours as a TIN pasted into existing aerial contours that we received from a client.  We used polylines to generate our proposed contours, and then generated a proposed surface from that.  We've made a blank surface, pasted in the existing surface, and are trying to paste in our proposed surface...  only the existing contours outside of the proposed suface no longer line up correctly once we do.

We've tried applying the method laid out here: [URL] ........ (and the link referenced in the bottom) but are still having trouble getting the surface to work.  We've tried offsetting as little as 0.25' and as much as 5' with the feature line draped over the existing surface, but it seemed that the greater the offset, the greater the discrepancy.

Just to make sure we even tried that correctly - should the breaklines that we add be standard or non-destructive?  (I've tried it both ways with little success either way, so I don't know if it matters much in this instance, but perhaps for future reference it would work.)

I've attached a screen shot of our surfaces.  The pink and green lines are the proposed contours, the white dashed are the existing.  The outer red line is offset 0.25'.  As I've mentioned, we've tried offsetting various amounts with decreasing success.

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AutoCAD Civil 3D :: How To Create Pond Section

Jun 19, 2012

I can create pond quick profile,but it can not be saved.

if I press the section view command ,it tells me no alignment .you know ,I only create pond without any alignment .I only created pond by grading .so I don't know how to create pond section.

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AutoCAD Civil 3D :: Pond Volumes Calculation

Jul 24, 2013

I have a manure storage pond that I am trying to figure out the total storage volume for. It has 2.5:1 Side slopes and a 10 foot wide ramp at 10:1 entering the pond to the floor bottom. I am trying to figure out what the volume of this pond is. What is the fastest and most efficient way to get this volume? I do not want it compared to any other surface such as existing ground.

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AutoCAD Civil 3D :: Use Different Slopes To Create Pond?

Apr 7, 2013

I have a surface and i have the outer border of a pond i want to create (see attachments). What makes it difficult for me is that different areas of the pond have different slopes. The area marked as "A" has a slope of 1:5, the are has a slope of 1:2 and the rest of the pond has a slope of 1:1.

My problem: I do not know how to grade the borderline so i end up having a surface with different slopes as my pond.

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AutoCAD Civil 3D :: Surface Area Of The Bottom Of A Pond

May 31, 2012

I have a surface built for the bottom of a pond. The way to get the surface area  (not the volume) of the bottom of this pond?

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AutoCAD Civil 3D :: Add Entry Point To Retention Pond?

Sep 25, 2013

I am trying to add an entry point to a retention pond that was created by grading tools.  I will to entry point to be shaped like a trapezoid.  I also want to grade a entry point to the slope of pond to control water erosion. 

I have been trying to add the entry point for days. 

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AutoCAD Civil 3D :: Creating Pond With Square Corners?

May 13, 2012

I am designing a retention pond in an existing surface.  I set the base of the pond and execute the grading at the desired slope and it generates the pond just fine, with the exception of rounded corners.  I need the corners to be square, mitered corners instead of the round. 

I'm using Civil 3D 2013.

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AutoCAD Civil 3D :: Section View For Pond Grading Object

Jun 9, 2013

I created a Pond Grading object with the associated surface. How can I cut and plot Section Views of the Pond Grading object just as I could do(using "Create Multiple Section Vtews" command) with Corridor object of a Linear project?

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AutoCAD Civil 3D :: Pond Bottom Does Not Show Up In Cross Section?

Apr 10, 2012

After crating my squared pond (or waste landfill for that matter) I runned a cross section from an alignment running across the the entire pond. The cross section did not show the bottom of the pond. I noticed that I forgot to do an infill to the bottom of the pond so I did it. But, still the bottom of the pond its not showing up in the cross section, just the side slopes. Do I have to delete the alignment across the pond and recreate it? That is probably the only thing I have not done. BTW, I have an access road coming down the side of the pond with a corridor created already and is not showing up neither on the cross section.

PD: I am running Civil 3D 2012!

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AutoCAD Civil 3D :: Designed Storage Pond - Cut And Fill Labeling

Jul 21, 2011

I have a small site where i've essentially designed a storage pond. I've cut 3.0m off the original ground at a 2:1 slope and built a berm at a 2:1 fill slope to a designed elevation. I've managed to balance the site to zero. The contour drawing I have shows elevations - which is great - however the client has asked to see the contours showing a Fill or Cut label from the original ground.

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AutoCAD Civil 3D :: Created Berm And Retention Pond To Contain Runoff - Water Volume

May 15, 2012

I have a site, on which I've created both a berm and a retention pond to contain runoff.  I now need to see if this is retaing enough water at a certain surface elevation.

The existing site is one surface and the berm/pond are another surface.

Is there a way to do this?

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AutoCAD Civil 3D :: How To Create A Section View For A Pond Other Than Quick View

Oct 1, 2012

how to create a section view for a pond other than quick view.

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AutoCAD Civil 3D :: Export XML Contours Not The Same?

Nov 27, 2012

i'm exporting a surface from 2013 to be used in 2010 for presentation. works great but the contour interval is not the same as the surface i'm exporting. working in 5/25 contours...xml import comes in with 2/10 contours. looked for a setting but can't seem to find.

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AutoCAD Civil 3D :: How To Smooth Contours

Oct 23, 2012

I'm drawing a topo and trying to figure out a way to manually smooth out my contours. I'm not talking about the little jagged edges that you can remove if you use the smooth surface option under surface properties but the big ugly looking jumps you see when contouring a relatively flat lot. In the ancient version of AutoCAD my company used the contours came in almost like splines and you could move the vertices around to make them look good. I know you can go in and delete some TIN lines and edit point elevations but that is very time consuming and I'm hoping there is a quicker way.

I know I can extract them into polylines but there are too many little segments to be useful. I've seen the SIMPLIFY SURFACE option and while that takes away some of the roughness it creates some as well. Is there some better option than extracting and then drawing a spline between the parts I want to smooth out? These contours don't need to be 100% accurate, I just need them to look simple, like if someone was drawing them by hand.

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AutoCAD Civil 3D :: Add Contours To Surface

Nov 20, 2013

I have added contours to my surface (the blue lines).  For some reason the surface generated contour (the orange line) is jumping across the contours I've added. 

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AutoCAD Civil 3D :: No Contours On TIN Surface?

Apr 25, 2012

My TIN surface either did not generate contours or did not display them on my drawing. I created and tried  surface styles of many contour intervals(from 0.5' and 4' to 2' and 10') without success. I made sure my contour layers on both the Style Dialog box Display Tab and Layer Properties Manager were turned on, still no success. 

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AutoCAD Civil 3D :: Breaklines And Contours

Nov 26, 2013

I'm having problems contouring in C3D 2014.

I'm using the command PL - polyline to create my break lines (Centerlines, top and bottom of curb)?.

 In this particular drawing the first point I click on is carrying the elevation throughout the entire length and yielding bad contours.

Essentially the bottom of curb on each side of the street should be the same elevation with a crown at the centerline.

Instead the elevations are about five feet different because the beginning point is around the corne at a point of tangency on a hill.

This has not happened in any other drawings and I've done them the same way.

I redid the breaklines with the 3DPOLY command and aside from a few minor edits the surface came out OK.

I've been reading about 3DPOLY command but have not found out too much about what the actual difference is between 3DPOLY and PL commands.

Seems like 3DPOLY is the way to go. 

I do not have too much experience with C3D 2014 and am making a huge jump from 2004 LDD. How to build 3D surfaces/contouring.

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AutoCAD Civil 3D :: How To Get Simple Contours At Once

Sep 9, 2012

When I generating contour(surface) using Civil 3D it gives very complicated contours.Some times those contours cuts each other and have very strange shape.

I used to use SURFER software to generate contours.It gives simple contours.But I like to use Civil 3D because.

I attached SURFER contours and Civil 3D contours. I also attached AutoCAD file those who using older versing of Civil 3D.

I know how to smooth contours in Civil 3D but it does not solve my problem. You may say "You should  use commands like swap edge,delete line .

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AutoCAD Civil 3D :: Computer Lag With AECC Contours

Mar 20, 2013

We have a total of three machine at our office that are running 64-bit Windows 7 with Civil 3D 2013. Two of the three machines have problems with drawings that include AECC_Contours. When you try and start a polyline or line the mouse will begin to jump and lag. As you move the cursor off of the AECC_Contours the mouse returns to normal operation. I have looked around throughout forms and have yet to find anything that relates to this. Also I have disable Aero within Windows, thinking that may have been the issue. All three machines are running the same version of Civil 3D with the latest service pack.

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AutoCAD Civil 3D :: Contours Disappear In 2010

Nov 8, 2013

While working in a drawing with civil 3D points and a surface created from those points, once in a while the contours will disappear. The contours disappear during any number of different commands, so it doesn't seem to be linked to a specific set of commands. If we save the drawing, close it, and then open it back up the contours are there with no problems. Is there a fix for it beyond closing and reopening the drawing. We are using Civil 3D 2010 in our office, and all of the current updates.

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AutoCAD Civil 3D :: Correcting Surfaces / Contours

Nov 6, 2012

Im working in Civil 09. I need to adjust the surface I created in order for the contours to be correct. Right now I'm interpolating point elevations to adjust the contours. I find myself adding lines and adding and deleting points. It's tedious. I tried changing the grid spacing to smaller one. It didn't seem to work.

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AutoCAD Civil 3D :: How To View Contours At Elevation 550

Dec 28, 2012

I have a surface with a bunch of contours. I want to view the contours at elevation 550. In Microstation there is a set display depth command. Is there a tool in autocad where I can view certain elevations.

I want to make layouts/viewports that are clipped to different elevations. For example I have a surface with 5' contours. I want to create multiple viewports on a sheet showing what each contour looks like at its elevation.

Civil 3D 2012 SP4.0 Windows 7 Enterprise 64-bit
C3D 2014 SP1
Dell M6600, Core i7 @ 2.3GHz, 16 GB ram
Dell T3500 workstation, too much ram to post

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AutoCAD Civil 3D :: Creating Points To Contours

Apr 1, 2013

I encountered a problem while creating contours from the points. what actually is the problem with the points or tell the steps once again that would be great. I'm attaching the points file.

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AutoCAD Civil 3D :: Labeling Contours In Every Drawing

Mar 15, 2013

I'm running 2012. Is it still true that I need to label my contours in every drawing? I have a drawing that contains my existing surface (about 90 Acres). I have labeled the contours in that drawing. I then have a output drawing that the existing contours are a data shortcut. The contour labels do not show up.

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AutoCAD Civil 3D :: Contours Running Through Breaklines

Sep 27, 2012

I am having an issue with my contours running through my breaklines (feature lines).  I have tried re-ordering the breakline, edits, etc and have also set my settings to allow crossings.

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AutoCAD Civil 3D :: Contours Disappear When Zooming Out

Mar 20, 2012

Whenever I zoom out in a drawing in Civil 3D with surface contours, some of the contours disappear. I imagine this is a result from a system variable setting but could not find it.

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AutoCAD Civil 3D :: Creating Surface From DGN Contours

Dec 10, 2013

This is the first time I have imported a .dgn file into Civil. The drawing contains contours lines with Z elevation data. When I create a surface using this geometry (polylines + some lines) the surface seems to be scaled in the Z axis by 12.

For example pline (from dgn) is at elevation 46' but the Civil3D surface is 552'

I assume this is a setting in the Surfaces dialog box, but I cannot find it.

Also the elevation field in Properties from the dgn contours is weird. For example, in one area the (pline) contours display -28', 26', -24', -22', -20', -18' in Properties but Civil3D interprets this as a downward slope - which is the actual field conditions. I don't understand the conversion going on here.

The geometry of the pline and contours generated from the surface seem to line up in a side or isometric view (see attachment).

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AutoCAD Civil 3D :: Labeling All Of Surface Contours At Once?

Nov 6, 2013

Often I've found myself dealing with some pretty complicated surfaces that have a lot of nooks and crannies, and many of the contour lines are only in a corner of the surface or are small and closed, and thus when I find myself wanting to have contour labels on all of the contours, there's not really one line I can draw using the "Create Multiple Labels at Interval" option to ensure that every contour is labeled. Thus I end up doing "Create Multiple At Interval" with a few different lines intersecting contours, but I often end up hitting some of the contours multiple times and I get a mess of labels.

I haven't been able to find a way to automatically just multiple labels on all of the contours at an interval in one fell swoop, so I started trying to program one...but then I got stuck with that, too.

Does any built-in method of doing what I want to do, or do I need to continue pursuing a programmatic solution?

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