AutoCAD Civil 3D :: Using Negative Cut Slope

Oct 30, 2012

I have a simple driveway corridor along a steep hillside.  For cut, I would like to have a negative slope away from the shoulder edge.  I have tried numerous approaches and all 'cut' reverts to positive.  I searched and found no clear answer.  It's such a short driveway, I can 'fake' it in, but I would like to calculate quantities. 

Using 2012 sp1, 64bit, windows 7

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AutoCAD Civil 3D :: Profile Geometry Editor - Slope-Slope Intercept To Place PVI

Aug 20, 2012

Can you not perform a slope-slope intercept to place a PVI?  Essentially holding the sta and elev of the PVI's directly before and after the PVI of interest and changing the grade in and out so that the sta and elev of the PVI of interest are changed.

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AutoCAD Civil 3D :: How To Match Gutter Slope To Outside Lane Super Subassembly Slope

Mar 22, 2011

Can't figure out how to match gutter slope to outside lane super subassembly slope.  Have super eop targeting a feature line with elevations, but when i check section editor gutter slope doesn't match pavement slope.

Civil3D 2013
Windows 7, 64 bit
Intel i7 2600 @ 3.40Ghz
16 GB RAM
Nvidia Quadro 600

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AutoCAD Civil 3D :: Shoulder Subassembly That Varies Slope In Relation To Lane Superelevation Slope

Jan 22, 2013

i need a shoulder subassembly that varies slope in relation to the lane superelevation slope. i know that i can get a subassembly for the shoulder that will follow the alignment superelevation xml data but in my case i can't use it because we are just adding a shoulder to an existing road. we're not changing the superelevation of the existing road, just milling and overlaying and widening. right now i've created a profile of the outside edge of the shoulder that gives me the correct shoulder slope but whenever i change my centerline profile i have to redo the shoulder profiles which is a real time suck.

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AutoCAD Civil 3D :: Slope To Depth Of 10 Feet Than Change To 2:1 Slope

Aug 13, 2012

I am in the process of transitioning from land desktop to Civil 3D. I design roads in steep terrain and sometimes need to have my catch (daylight) slopes change. So my question is, how do I change a daylight slope at a specified depth? For example, from the shoulder of the road I want a 3:1 fill slope to a depth of 10 feet than change to a 2:1 slope until it catches the existing surface. Can this be built into a subassembly such that if the fill is less than 10 feet it will daylight correctly at a 3:1 and if the depth is greater than 10 feet then it carries the 3:1 for 10 vertical feet and then changes to the 2:1 until it daylights?

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AutoCAD Civil 3D :: Define Negative Data For Profile?

May 7, 2013

I'd want to define an initial element that begins with a negative value, also I'd want to use a value out of the limits.

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AutoCAD Civil 3D :: Create Surface From LandXML - Negative Elevations?

Jun 8, 2012

I've created a surface into Civil3D by importing a LandXML file created from contours in a .dgn file.  When I create profile views for the alignments, the elevations are shown negative (-500 to -20) where as they have to be in between 500 to 670. Also when I run the surface elevation analysis, all the elevation are shown in between 1000 to 2200 inches as shown in the figure attached.

Am I missing any conversion or some settings when importing the surface. 

Windows 7 x 64
Nvidia Quadro 2000
24 GB Ram
i7 960 @ 3.20 GHz
Civil 3D 2012

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AutoCAD Civil 3D :: Slope Map Display

Jul 1, 2013

The undefined areas of a slope map now have a hatch to them and are plotting black. This map was created a month ago in 2012 without issues, upgraded to 2014 and now the undefined range has hatch! 

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AutoCAD Civil 3D :: Get The Slope At A Point (x And Y)?

Jan 2, 2012

I have a TIN Surface, and I want to get the slope at a point (know X and Y).

Working Civil 3d 2010 and API.NET

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AutoCAD Civil 3D :: Can't Display More Than Two Slope Ranges

Jul 8, 2013

I've got a surface that displays contours correctly. When I go to Surface Properties-Analysis tab, I can  set an arbitrary number of ranges for contours, directions, elevations, slope arrows, etc, and they display correctly.

I can set an arbitrary number of ranges in the slope range box too, but when I click the Analyze button, Civil 3D 2014 hotfix 1 only displays two slope ranges: 0% to 2979736.0077% and 2979736.0077% to 99999900.0001%. (!)

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AutoCAD Civil 3D :: Auto Slope Patterns?

Aug 10, 2013

Can I automatically have my slope patterns introduced with a command like matchprop or something similar ?

I have 284 streets and it's getting ages to finish the slope patterns on every street. Civil Engineer / Infrastructure of metropolitan transports. URL....

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AutoCAD Civil 3D :: How To Round Off Top Of Graded Slope

Mar 21, 2013

I'm trying to match an existing slope design that has a soft rounded off top of slope.  The toe (green) is a feature line and I'm using a 1-1/2:1 slope to natural surface grading rule.  You can see the rounded contours in blue that I am trying to match.  

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AutoCAD Civil 3D :: Link Slope To Surface

Nov 7, 2012

in my link "link slope to surface", i have the slope set to -2.00%. in the cross sections, it is at a +2.00%. why is this thing not linking at the defined -2%? see image.

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AutoCAD Civil 3D :: Determine Elevations Along Slope

Dec 3, 2013

I need to project a surface/grading (or something of that nature) across my berm and have it intersect with the inside bank. This is better explained if you see the attached image. In the plan view you see 4 featurelines. Outside TOE, outside TOB, inside TOB then inside TOE. I need to project the outside TOE across the berm (shown in the section view) then create a new featureline where the line and inside slope of the berm intersect. Note that all the elevation shots vary as does the widths across the berm. What's the best way to do this?

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AutoCAD Civil 3D :: How To Calculate Average Slope

Feb 20, 2013

What formula Civil3D uses to calculate the average slope of a surface?

The formula I am using is S = I*L/A

S = Average Slope
I = Contour Invertval
L = Length of Contours (ft)
A = Area of parcel (sq. ft)

I just had to do four parcel calcs and the percentage I find using the formula is always 1-3% lower than the percentage Civil3D spits out. I can't find anything about how Civil3D arrives at that number, it just appears. I assume that Civil3D is more accurate but I can't give that number to a client without knowing how the program arrived there.

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AutoCAD Civil 3D :: PVI Profile On Corridor Slope

Oct 1, 2012

I created a profile view in order to create a corridor, I want the profile PVI stations to be on the same plane,

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AutoCAD Civil 3D :: Superelevations And Sub-base Slope

Jun 11, 2012

I need to have a subassembly for a superelevation where the lane and base slope to the left and the bottom of the sub-base will slope to the right. I was using the LanSuperelevationAOR subassembly, which worked fine with my superelevation when the lane, base and sub-base were all sloping the the left, now I need to edit the slope of the sub-base only to slope back to the right at a -2%.

Windows 7 x 64
8GB Ram
Intel Xeon CRU 4 Core @ 3.07GHz
Civil 3D 2012 .....

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AutoCAD Civil 3D :: Slope Analysis - Ranges Set To 10

Oct 12, 2006

I can not get the slope analysis to come up with 10 slope ranges. My ranges are set to 10, but my Range details populate to 22? Screen Cap included. I've tried this with Equal Interval, Quartile, and Standard Deviation. Nothing will create 10 intervals.

My "slope analysis" surface style is set to show Slope, with the range set to 10. In surface properties, my range is set to 10.

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AutoCAD Civil 3D :: Slope Symbols For 3d Polylines

Sep 20, 2013

I use slope symbols instead of contours to keep my maps less busy.  Unfortunately I can only change my cut style and fill style to slope symbols with grading by right clicking on the little diamond in the grading and selecting grading properties.

I have created a surface with 3d poly lines not by creating grading and got contours that way, How can I create the slope symbols in a surface.  I tried xploding them and then creating a block and using the measure tool on the 3d polylines but it doesn't do anything. 

Picture 01 is the contours

Picture 1 is the contours turned off and cut/fill styles turned to slope symbols.

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AutoCAD Civil 3D :: Slope Of Surface After Kriging

Apr 5, 2013

Please find the attached picture. It shows a surface with its data points. I extended the surface to the outer boarder shown by kriging. The slope of the surface that was added with the extension (past the data points) has an upward slope that was generated. I need the surface to stay level with the data points that are there.

How to avoid that added slope when extending a surface?

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AutoCAD Civil 3D :: Add Slope Markings On Corridors

Apr 18, 2012

Trying to add slope markings on my corridors, and the only way I can find is to do it in the Corridor properties > Slope markings, then click add slope pattern, which asks you to select featurelines top and bottom of slope.  Surely there is a way to simply switch on or off slope markings where in cut or fill?

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AutoCAD Civil 3D :: Slope Analysis By Direction

Mar 27, 2012

I need to be able to do a slope analysis on a surface, but I need to have it calculate the slope in a direction - east and north.  Any way to do it?  Maybe even if there is a quick way to apply slope labels to a surface based on a grid - say the slope from N0.00, E0.00 to N0.00 to E 25.00

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AutoCAD Civil 3D :: Super Elevation Max Slope At 2%?

Mar 22, 2013

I am using Civil 3d 2013 and I am trying to calculate the superelevation information in which the curve will max at 2%. Is there a way in which the superelevation can be calculated using the superelevation wizard in which a 2% SE is the max? So far it will only let me use the SE for 4% local roads and I have to edit it using the SE layout. 

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AutoCAD Civil 3D :: Daylight With Variable Slope

Nov 6, 2012

I wonder is it possible to have a daylight (or other function)  that can give a different slope for datum and for the top.  This would be useful for if you have different rules (e.g. because of geotech) with regard to temporary and permanent batter slopes.

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AutoCAD Civil 3D :: How To Label Ditch Slope

Mar 14, 2013

How do you label the foreslope and backslope of a section? For instance 3:1...

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AutoCAD Civil 3D :: Control Slope Patterns

Oct 9, 2013

Im having problems to control the slope patterns. This is especially visible i corners where the slope patterns distance is very small. I have tried to fix this in the edit slope pattern put i cant get it right. I would like to have my slope pattern every 5 meters. This cant be to hard to fix, right?

Im attaching a image to show my problem.

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AutoCAD Civil 3D :: Calculating Slope Area

Sep 12, 2005

How I can calculate my area for different slope regions?

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AutoCAD Civil 3D :: Slope Stake Report

May 27, 2011

Is it possible to create a Slope Stake Report for multiple baselines?.  When I generate the report, it only creates a report for the first baseline of the corridor.  All of my sample lines are in the same section group, so I'm wondering why it would not create all my sampled stations.

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AutoCAD Civil 3D :: Constant Slope Median

Jun 18, 2013

C3D2012..I have an assembly with left and right curb subassemblies, they are spaced about 1 m apart.  I want to connect the BOC's with a constant slope median.  I bring in the median and connect it to the Left BOC and it attaches, but shoots the median for 20 m across the assembly to the right.  I tried to put a marked point on the right BOC prior to bringing in the median assembly, but the same thing happens.  I changed the marked point name to RTC (Right Top Curb) and also changed the name to match in the median subassembly,  with the same results.

Any proper way to insert the median and get it to connect properly.

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AutoCAD Civil 3D :: Slope Stationing Alignments

Apr 11, 2012

Any way to label the slope stationing rather than horizontal stationing? This is common when doing long pipeline projects (40 miles) or more in very steep terrain. I am doing one now that is only 1 mile and the 2D verses 3D length is a difference of 100'. 40 miles that would mean it would be off 4000'. The client uses this stationing as a guide to know how much pipe they need. If you would do that horizontally that would be way off the mark.

I am using Civil 3D 2010? Maybe its included in 2012 or could that possibly be an option for future releases since it is a 3D software.

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AutoCAD Civil 3D :: Daylight To Surface Max Slope?

Apr 18, 2012

I'm modeling a simple corridor (12' lane 2%, 6' shoulder 6%, 4:1 to match EG).  I used the "LinkSlopeToSurface" subassembly for the 4:1 to match the EG.   Unfortunately our EG isn't always wide enough for the 4:1 slope to match it somewhere.

Is there an assembly that would use 4:1 as a standard daylight slope, but where necessary adjust the slope, max. 3.5:1, to match EG surface? 

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