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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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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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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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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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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Sep 12, 2013
It can be done using the LaneFromTaperedMedian subassembly, and that there is a webcast explaining it. I have checked with Autodesk, and the webcast is no longer available. Any detailed instructions as to how to accomplish this. I'll attach an image of my median.
Win 7 64BIT
C3D 2013
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Jan 3, 2012
I have a baseline profile as a finished grade of a roadway corridor and want to add raised medians within a portion of the corridor. best way to have the medians adjust as the profile grade changes?
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Jun 4, 2013
I need to create an assembly where the median width varies , I already created the alignment, profile,corridor,section with the design level. Also I have created the assembly with fix width. Now in the middle of my road the median is getting bigger ,Its possible to link the median with a polyline or another alignment were it change the width ?
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Aug 23, 2012
i have a question for the gurus. how do i accomplish modeling two parallel roads with a median in between? in other words, say a northbound (NB) and a parallel southbound (SB) roadway, with a grass median in between them. the both roads have crown, and then eventually slope down towards the median, and at one point they meet.
I am curious to know if say for NB and SB, i have an assembly with the lanes, then shoulder, and then median area past the shoulder at x%, what subassembly should i use to accurately model the point where the NB and SB x%s meet?
*Edit:
I am not sure if i would be able to do it with only one baseline, as the roads may not always be parallel.
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Jun 16, 2012
I have problem with medians ( Both MedianRaisedWithCrown and MedianRaisedConstantSlope) when crossing center line ( i.e whole median has to cross the center line).
I have median that goes along the centerline and it has to move to left completely ( whole median is on left side of the centerline) to cater for left turn. I tried with MedianRaisedWithCrown and MedianRaisedConstantSlope but it did not workout for me.
I used alignment ( for cl ) and offset alignments for median edge and etw. I have problem when the median edge ( offset alignment ) cross the center line and continues. I can see etw and median feature line shifts.
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Jul 9, 2012
Here's my assembly :
and
when I tried to assign the Median Width in my corridor to a polyline representing media width,
I got this overlap in my Section view :
how can I maintain Objects in this cause "Lanes" attached to median no matter width change ?
Sony VPCCW26FA
Intel Core i5 M 520 @ 2.40GHz
8192MB RAM
NVIDIA GeForce GT 330M 512MB Dedicated
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Jul 21, 2013
How to create multiple offset target. It mean lane, median, sidewalk extra. I have attached exactly what i expect.
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Jan 16, 2013
I'm facing problem in designing a intersection. Highway median intersection opposing left turn lanes.
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Apr 10, 2008
I will be starting to design a 4 lane - 5 lane highway divided by a median. The median will be offset from the cl, stop for the intersection, then continue on the other side of the cl once past the intersection.
I will start digging into the median sub assemblies to try to figure this out.
I remember the old LLD/Civil manuals used to have a description on how to do this. I have 2008 sp2, but only the 2007 manual printed out.
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Dec 11, 2013
I have a client that wants to put in a constant flow into an inlet and have SSA calculate the HGL downstream of that (as well as add additional flows at additional inlets). Is there a way to do this? I tried adding an "Initial flow" to a pipe but after running the analysis, that flow wasn't the peak of the pipe (I used 1cfs for the initial flow and the peak was 0.77 cfs).
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Aug 10, 2011
I know it can be done usign Pipe networks and feature lines and a massive waste of time.. But I just want ot offset my FG to show a line constant offset. Can this be done? If so how?
Win 7 64bit
16 Gigs Ram
Intel i7 870
Quadro fx1800
C3D 2011/2012
ASUS Custom
Dual 24 Phillips screens
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Feb 22, 2011
I'm attempting to model a gas network using the pipe tools (Civil 3D 2011). The problems I'm having:
1) The pipes are coming in at all depths (mostly too deep), rather than at the constant 3' cover I would like.
2) Pipes all have zero slope and "stairstep" at null structures, instead of sloping with the surface.
My pipe rule set is:
Cover only, min/max 3'
Match pipe-to-pipe, inv 0'
I tried adding a slope rule, it dropped pipes lower.
For structure rules, I have tried both 0' drop across structure, and no rules (hoping pipe match would take over). All are null structures.
I do have the surface referenced, and it is being recognized (structure rims insert at grade).
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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