AutoCAD Civil 3D :: Grading With Different Slopes

Dec 31, 2013

I tried to work with grading but it didn't work,

1 - The square helicopter pad is flat and grading with 2:1 fill, 1:1 cut.
2-  The second FL is 2% slope down and grading with 2:1 fill, 1:1 cut.
3-  The third FL is slope down to meet the existing road, both sides will same cut and fill.

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AutoCAD Civil 3D :: Infill Grading VS Feature Line Grading

Dec 24, 2013

"An infill grading has no criteria applied to it. Any area bounded by feature lines or lot lines that is not already a grading can be converted to an infill grading."

So given an area enclosed by a feature line, an infill grading can be created. Using the same features line, an feature line grading can also be created. what is the difference between these two surfaces? They both have no criteria applied to them.

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AutoCAD Civil 3D :: Slopes And Angles In Profiles

Aug 31, 2012

I am using Civil 3D 2012. I am drawing a water line in a profile with a vertical scale of 1" = 10'. I am trying to draw lines at 45 deg angles to account for standard fittings.

Now, I tried to block a 45 deg angle and exaggerate the y scale, but for some reason this does not work well mathematically. Is there a way to draw lies at a certain slope, or at a certain angle from another line, while taking into consideration the scale exaggeration?

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AutoCAD Civil 3D :: Surface Slopes On Grid

Nov 20, 2013

I was wondering if it's possible to add surface slopes on grid (similar to how there is a tool for adding spot elevations on grid). I can do them individually at a grid spacing but that's tedious, and considering you can add spot elevations on a grid, I'm not sure why this wouldn't be possible. 

If there isn't a built-in tool for this, would it be possible to make a block of a bunch of one-point spot slopes and you simply choose which surface & the insertion point when you insert the block?

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AutoCAD Civil 3D :: Subassemblies At Different Slopes Targeting Each Other

Nov 15, 2013

I have a ditch and a road that need to follow separate profiles but be integrated with each other as a single corridor and the ditch's 3:1 slope needs to meet up with the road's 2% slope.  Is it possible to have the two subassemblies target each other without having to create a dummy surface or a feature line for targeting to?

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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 :: Variable Daylight Slopes To A Profile

Dec 24, 2013

I am trying to create in my sub assembly a daylight with a variable slope to a graded ditch then it back slopes to natural ground. (image attached). How can I do this in Civil 3d 2012?

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AutoCAD Civil 3D :: Surface Slopes In Small Area

Aug 2, 2013

I have a large ex surface that I have divided into basins and such. I know need to evaluate the slopes in these areas. To do the whole surface at once seems to not be possible. Is there a way in c3d to view analysis information for a section of surface for instance in a polyline or fence?

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AutoCAD Civil 3D :: Subassembly Depth Slopes Query

Oct 23, 2011

Is there any subassembly can get variable slopes depend on depth like in Land desktop as you can see in the attached file.

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AutoCAD Civil 3D :: Expression To Round Pipe Slopes

Oct 8, 2012

We Need an expression to round Pipe Slopes to the nearest 0.5% slope. We were working with:

ROUND(({Pipe Slope}/0.5))*0.5

but it only returns 0.00.

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AutoCAD Civil 3D :: Corridor / Surface Style To Display Slopes

Jun 6, 2013

I am looking for either a corridor style or surface style to display slopes while in plan view while working on a corridor. I know you can turn on slope arrows as a surface style, but I am actually looking for the grade to be displayed next to a slope arrow. Hopefully I am explaining it properly.

I just am looking for a better way to spot errors before putting surfaces into machine control without checking station by station in the section editor.

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AutoCAD Civil 3D :: Topographical Survey That Show Different Gradients / Slopes

Feb 26, 2013

I am new to Civil3D And I am using it for one purpose, Im working at producing planning drawings for solar farms, and the client has asked to me produce topographical surveys highlighting where the gradient or the slope is greater than 15 degrees. Is there someway i can use Civil 3d to do this?

Ideally im looking at producing a 3D Model which has shaded areas for the areas which are above 15 degrees. And Hopefully another shaded for areas between 15 and 10 degrees, 10 and 5 and 5 and 0

The topographical surveys i am downloading at the moment are from a site called promap and are DSM Type?

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AutoCAD Civil 3D :: Different Surface Cross Slopes And Super Elevation

Mar 6, 2012

Our provincial standard requires subgrade and subbase surfaces to have a normal cross slope of -3%.  The base and asphalt surfaces have a normal cross slope for the driving lane of -2% and -5% for the shoulder.

I have been trying to figure out how to do this in C3D.  I have thought of different ways of handling this for a straight tangent, but have not tested them.  What is causing me the most grief at the moment is how to handle this in a curve with super elevation.

The transition will be different for -2%, -3% and -5% Runout distances. 

Can C3D handle this? What about using Subassembly Composer?

(I should mention that I have tried with Subassembly Composer, but I am not sure how to deal with superelevation.  -

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AutoCAD Civil 3D :: Create Assembly With Different Inclinations Of Terraces And Slopes?

Dec 6, 2012

how to create an assembly with different inclinations of terraces and slopes

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AutoCAD Civil 3D :: Subassembly - Variable Earthwork Slopes Beyond Alignments?

Nov 29, 2013

I just want to start by saying I have been extremely impressed with the speed and effectiveness of finding Civil 3D solutions through this forum. However I do not think there is a way to solve the problem below without making a custom sub assembly.

There is a common problem that I run into when modelling earthworks on airfields. All Taxiways and Runways will have sepirate areas that determine the slope of earthworks in that area. As an example I will explain my problem for a Runway.

Any ruwnay will have a Strip area (150m offset from its centreline) and a Clear and Graded area (105m offset from its centreline). Therefore any earthwork slopes between the runway pavement edge and 105m offset from the centreline will be determined by the requirements within the Clear and Graded Area. Likewise any earthwork slopes between 105m and 150m offsets from the centreline will be determined by the requirements of the Strip area.

My problem is that when overlaying a runway, the new earthworks required may extend beyond the clear and graded area (and into the strip) at some points but not in others.

Therefore I would like a sub assembly that does earthworks at a set slope unless it passes the clear and graded line where it would then continue the earthworks using a different slope. It should be pointed out that the clear and graded line will be present along the entire length of the runway and the earthworks may or may not extend beyond it.

Just for the sake of clarity, when I say earthworks, I mean the subassembly within autocad that will "Cut or Fill" at a set slope until it reaches a chosen surface level. Similarly the "clear and graded line" and "strip line" are 2D and mearly delineate the areas in plan.

save time and make my model more dynamic. As it stands I have been getting around this problem by modelling the earthworks at the initial slope (clear and graded area) and then manually amending the corridor to use a different assembly where the earthworks extend beyond the clear and graded line.

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AutoCAD Civil 3D :: Takeoff Surface Area Of Daylight Slopes

Feb 28, 2012

What approaches are available in civil 3D to takeoff the surface area of daylight slopes?Which do you recommend for given scenarios?

I tried compute materials but the volume report for cut and fill area is zero - so either I missed something or the compute materials for surface area does not work yet. Then, I tried the QTO manager and linked the corridor codes slope_link and daylight_fill to payitems. Slope_link has a QTO of 1,458,099M2 and daylight_fill has 913.39M2; I have more confidence in the daylight_fill takeoff.

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AutoCAD Civil 3D :: Identify Areas Of 100sf / Less Within Slopes Exceeding 40%

Jan 6, 2014

Need to identify areas of 100sf or less within slopes exceeding 40%. Is there a simple way to identify this within C3D?

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AutoCAD Civil 3D :: Existing Ground And Design Profile - Label Slopes

Dec 15, 2008

I have an existing ground profile, and a design profile. All I want to do is label the slopes of the design. When I click my line label style and turn on the text it labels the existing ground and the design ground. I cannot find the setting in my two profile styles to turn the slopes off in the existing ground.

Oh, how can I get a tick on the V.C. dimension line?

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AutoCAD Civil 3D :: How To Make A Label In Plan With Sections Slopes From Corridor

Jan 18, 2013

I saw on you tube channel [URL].........

How to make this label where I can show the design slope in plan.

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AutoCAD Civil 3D :: Create A Label For Slopes In Cross Sections For Surface

Apr 30, 2012

I am trying to create a label for slopes in cross sections for a surface created from breaklines using gade breaks as you can not weed segment labels

I am weeding the labels out based on the change in grade of the section profile and making the label text high very small of the labels I do not want to see. But the first label returns ??? because there  is no grade coming in so I get ??? instead of something usefull like null. Any way to convert?? to something you can evaluate and use.

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AutoCAD Civil 3D :: Create Hatching For Slopes Surface Style Instead Of Using Solid Colors?

Dec 15, 2012

Is there a way to create hatching for the slopes surface style instead of using solid colors?

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AutoCAD Civil 3D :: How To Raise Grading

May 9, 2012

Is there an easy way to raise an entire site by 1.0 foot and have the grading hit the previous targeted surface?  The only way I have found is to grab all the feature lines and raise them up by the required amount, but by doing that, the grading bogs down my system and it crashes, plus, I have grading attached to 3dpoly's and not necessarily all feature lines.

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AutoCAD Civil 3D :: Grading Toe Disappearing?

Apr 25, 2013

I am drawing a pond levy.  I draw the outline of the top of the fill, set that at the elevation I want, then grade it down to the existing surface on a 6:1.  The grading works perfectly.  The outline of the fill's footprint shows up just fine around the back of the fill, but the toe line doesn't show up all along the front side of the fill, but I still get the slope lines projecting down in the front. 

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AutoCAD Civil 3D :: Use Grading For Channel?

Mar 6, 2012

I want to cut a channel through a existing surface; bottom width: 5 feet; at elevation 1950 and side slope 1:1 (45deg) up to existing ground.

What I am doing right now is create a feature lines 5 feet wide, at el 1950 and use grading tool to project it to existing ground with side slope at 1:1. What i am doing is correct?

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AutoCAD Civil 3D :: Grading Subdivisions

Oct 16, 2013

I am working with Civil 3D 2014, I played with 2009 back in 2008 and before that it was Land desktop.  I don't know if I am not following a standard workflow.

Build the EG from contours.Layout the CL for the ROW and convert to a horizontal alignments.Create the profiles.Design the vertical alignment in the profile.Create the assemblies for the different types of road sections.Full profile, pavement width assembly, the curb return assembly, the daylight left / right, 1/2 side left / right, and pavement width left / right.Build the corridor, set the target surface as EG or FG, depending on where the section of the corridor is located. (At the edge of the property to EG, then after the first building pad to FG)This is where I have a thought something is wrong. If I am grading the entire site, why would I have the ROW grade to the EG, when I will need the surface to grade from the ROW to the closest building pads?Create the intersections, using the different types of assemblies, per the ROW sections.Create feature lines and use elevation editor to set all the elevations around the pad.Using the Grading creation tool, grade to surface, using a 2:1 side slope. Then adding an infill to the pad.

 I keep having the file crash after grading about 10 lots. I recover and it works find, but then the file runs very slow, and will crash. I haven't taken any classes in Civil 3d, and am looking for one in my area.

I am use to creating the vertical surface then creating points along the CL, TBC, FL, BOW then creating break lines along the points. Then create a break line for the pads, and build the FG contours from these break lines.

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AutoCAD Civil 3D :: Grading From The Side

Aug 8, 2012

Say I have a grading that runs north south and goes down 2%, up 2% and so on waffling along. Is it a poor practice to trace the side edge of the grading (in the same site) to add another grading to pitch east west?

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AutoCAD Civil 3D :: Grading Transition

Mar 4, 2013

I have a building pad where I created a grading of 5:1 to existing grade.  I want to change one side to 20:1.  How do I go about transitioning the 5:1 to the 20:1.  I create the 20:1 and the contours just dead end into the 5:1 grading area

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AutoCAD Civil 3D :: Helicopter Pad Grading

Dec 30, 2013

I am creating a helicopter pad, with cut slope 1:1 and fill 2:1. But when i created a transition between the pad and existing road, i don't know how to. I have added a feature lines and make a separate grading but somehow it didn't work.

I have attached here the dwg file (C3D 2014) .

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AutoCAD Civil 3D :: Residential Grading Display

Mar 19, 2013

What does "Residential grading display" mean?

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AutoCAD Civil 3D :: Grading Against A Retaining Wall

Sep 8, 2012

I have a platform at level 13.275m and nearby there is a retaining wall at aprox. level 4.0m. 

For the wall i've made a surface using feature lines from EG till level 15.0m and then pasted into the EG surface to create the 'barrier' for the slope. But when i do the grading with the fill slope projection to surface, when it reaches the retaining wall section, the contour lines go crazy and if i do a quick profile, the fill slope line (obvious) is iregular, rather than a straight down line (2:1)  going from level 13.275m till it hits the EG.

I've attached a picture to show the problem better.

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AutoCAD Civil 3D :: Complex Object Grading

May 21, 2012

I am tring to grade a complex object. Please see the attached document. The two grading objects are not interfacing correctly when graded although i can get the surface almost correct i beleive. Is there a way to remove this issue or the grading will not create a lot of difference when computing the volume clacs ( we are talking volum computation roughly about a million cubic metres cutting).

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