AutoCAD Civil 3D :: How To Connect Two Points Via Surface / Subassembly Composer

Apr 22, 2013

I'm trying to create flexible model of a penstock with different ground surface elevation scenario.

In case if both top points of trench below or above EG, there will be cut/fill case to EG.

how to connect P1'/P2' and AX1/AX2 via EG? Basic link wouldn't work because it will be just a straight line.

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AutoCAD Civil 3D :: Subassembly Composer Target Surface

Oct 29, 2013

I can import my SA fine, but the problem is that the top of it needs to be cut off 1 m above the existing ground (which is already a surface in civil 3d). How do I setup the target surface so that when I import the SA into my drawing, I can link it to that surface and have it cut off 1 m above the surface?

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AutoCAD Civil 3D :: Where Is The Subassembly Composer

Aug 15, 2013

I know this sounds like a really stupid question.  Where is the subassembly composer?  We have Civil3D 2013, and my understanding was that the subassembly composer was supposed to automatically install in 2013 as opposed to previous years when you had to download it from the Subscription Center.

C3D 2013

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AutoCAD Civil 3D :: Subassembly Composer Superelevation

Jul 23, 2013

How to use the superelevation. I read that I have to enter this command:

if((Side=Left)AND(SE.HasLeftLO), SE.LeftLO,
if((Side=Right)AND(SE.HasRightLO), SE.RightLO,

but I don't know where, and I just want to create a simple assembly with a slope and delta X and having a lane outside superelevation for the both side.

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AutoCAD Civil 3D :: Tunnel In Subassembly Composer

Jul 13, 2012

I am creating an subassembly for Tunnel in the subassembly composer.I am wondering how can i draw an ellipse with the minor and major radius data.I tried it with curve geometry but it doesn't seem to be way to draw an ellipse with the major and minor axis parameter?

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AutoCAD Civil 3D :: Autodesk Subassembly Composer

Dec 6, 2011

I have a basic wall sub assembly that I created in SAC.Its looks fine in the SAC but when I import it into Civils it does not work...I have changed the extension from pkt to zip so that I can post it on here

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AutoCAD Civil 3D :: Subassembly Composer Superelevation

Feb 13, 2013

I am working with SAC , and cant understand how that superelevation works, how to make my models work in CIvil 3d in superelevations... how to build it properly in SAC.  I would rly love to get .pkt file with working model as example  , or at least get some usefull tip.

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AutoCAD Civil 3D :: Subassembly Composer - Point Codes And How They Are Used

Nov 5, 2012

I need to make them my best friend because the Subassembly Composer is basically useless unless you use the proper point coding for your SAs. This I know... I've attached an image from the Autodesk file that shows multiple point codes per link and point for the DaylightStandard Civil 3D Stock SA.

Which point codes must I use in my subassemblies to ensure I can create corridor surfaces properly down the road? For example the DaylightStandard SA shows...

P3 shows: Ditch_Out, Hinge, Hinge_Cut
P3 also shows: Daylight, Daylight_Fill 
P4 = Dayltight, Daylight_Cut

If I'm building something similar in the Subassembly Composer what the heck do I focus in on for my point code. I will have issues with my Corridor surfaces down the road if I don't do this properly up front. I've seen examples where the Input / Output Parameters you define a string for the coding, is this to apply multiple codes to a point or a link?

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AutoCAD Civil 3D :: Export Subassemblies Into Subassembly Composer?

Mar 11, 2013

I understand the procedure for IMPORTING a pkt file from SAC into C3D.  But is there a way to go the other direction?I want to use certain SAs that come with OOB C3D -- but I want to customize them.

Of course I can recreate them -- but I'd rather not start from scratch (ESPECIALLY where it comes to the codes).

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AutoCAD Civil 3D :: Subassembly Cannot Be Imported From Composer Properly

Aug 11, 2013

Not sure since when, the previous imported subassembly porperties cannot be modified in civil 3d and importing a new subassembly from the composer is also having issue, cannot see imported shape, just a red circle.

Someone said because of the SP2 installation. I have to go back to SP1 for now. 

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AutoCAD Civil 3D :: Subassembly Composer Versus Section 3D

Mar 1, 2012

what is the main advantages and disadvantages of these two programs.

Because i actually want to focus of someone of these two programs 

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AutoCAD Civil 3D :: Subassembly Composer Windows Won't Scroll?

Dec 27, 2012

Where Subassembly Composer windows won't scroll? I can scroll with the wheel, but the scrollbars don't work.

If I start a new project, they work for a while, but once I have worked for several minutes, they become disabled again.

I did an uninstall and re-install but I get the same results.

Autodesk Authorized Value-Added Reseller

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AutoCAD Civil 3D :: Subassembly Composer Expression For Interchange Offsets

Mar 27, 2013

I need to make interchange shoulder widening for my sub assembly.

there is picture where I have the shoulder which I want to add target offset in corridor to make offset of the edge of shoulder. but I don't know how to write expression that when top link will offset slope will move with it and the bottom link will connect in crossing of this two points.

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AutoCAD Civil 3D :: Subassembly Composer - Lane Assembly Targeting

Nov 19, 2013

I create Curb Return Fillet assembly with shoulder in SAC , but now i have problem with targeting , when i giving two targets it takes only first target and ignores second,   could you check attached assembly and drawing ?

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AutoCAD Civil 3D :: Subassembly Composer - Link Slope To Elevation

Oct 8, 2012

Its a embankment crest (dam wall) and then sloping down at an angle to a target elevation. I want it to shoot through my topo / surface and then apply a boundary later.

It looks fine in Composer but doesn't show up in C3D - only straight line. Would like the same outcome as the Generic Link Code - LinkSlopetoElevation.

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AutoCAD Civil 3D :: Subassembly Composer - Update Existing Custom SAs

Nov 27, 2012

What's the easiest way to update an existing custom SA once it's in the drawing.

For example i have some coding that I'd like to change and this particular SA is in use 10 times in my file in different ways. I used the Subassembly Composer to create the original custom SA.

It's not as easy as saving the file over top of the existing .pkt file, if it was I wouldn't be here. It seems to be behaving like a block would. I need to redefine the Subassembly in order for it to update in the drawing. How is best to do this and is there any tricks to the process. When do i need to open and close Civil in order to apply the new changes.

Do I need to update the SA in my tool palette as well? 

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AutoCAD Civil 3D :: Layout And Roadway Mode In Subassembly Composer

May 28, 2013

I use SAC 2014 to create a subassembly such as following but when design, the next Subassembly doesn’t attach with point P4, while the terms verify as designed is TRUE.

I checked and found that the Layout mode  is different with-  the Roadway mode.

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AutoCAD Civil 3D :: Subassembly Composer - Varying Depths And Shapes

Oct 15, 2012

I have a case with the Subassembly Composer where I have 3 varying depths. InsideLane, OutsideLane, and Shoulder. My Base shape below these 3 shapes will not setup properly. I understand why, it's because the varying depths will create a potential step up or down situation depending on the depth of the top 3 shapes. This prevents the definition of the Base Shape. 

For the sake of quantities I'd like to create a Base Shape. I could create Base1 Base2 Base3 (one below Inside Lane, Outside Lane, and Shoulder). I would prefer not to for clarity purposes. 

How could one approach this? I'm thinking that I need some conditional components to clean this up. I'm not a pro writing expressions. I basically need to define the links that define the varying depths between the top 3 depths. I need to create another point and link if the depths vary, and that link needs to be included within the shape definition for Base.

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AutoCAD Civil 3D :: Subassembly Composer - Set Default Width When Using Targets

Oct 4, 2012

I can make a small subassembly that can vary it's deltaX and deltaY based on a 3d polyline (or alignment / profile) in  the drawing. However the subassembly does not get put in with default perameters outside of the areas where the targets exist.

I have been trying to come up with a decision tree to tell the subasembly to use default values where there are no targets to use, but I have not been able to find the correct syntax that works for those true/false decisions. My VB language knowledge is clearly lacking..... 

Looking for small .pkt file to show how it is done?

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AutoCAD Civil 3D :: Subassembly Composer - Ditch Depth In Fill Condition

Feb 2, 2013

I am trying to create a custom subassembly using SAC 2012 that will place a 1' deep ditch at the bottom of the slope in a fill condition.  The trouble I am having is how to hold a consant 1' depth on the backslope and vary the foreslope since the daylight offset and elevation is variable depending on the slope of the existing ground.  I need the attachment point to be the edge of the shoulder so it seems like a loop that varies the foreslope length would be required but loops are not allowed.  I will also have the option to target a profile but I also need the ability to hold a constant ditch depth.

How to model this condition.

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AutoCAD Civil 3D :: Change Sequence Of Input / Out Parameters In Subassembly Composer?

Mar 13, 2012

When I created my subassembly with subassembly composer, it's difficult to change the sequency of the input/output parameters. Do we have an easy way to do that, Like moving?

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AutoCAD Civil 3D :: Conditional Point / Link Code In Subassembly Composer

Jan 10, 2013

it is possible to define point/link codes using some conditional expressions. When I try to write in an expression under "Link Codes" I get an error. Is there a way to create conditional codes without the use of "decisions"?

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AutoCAD Civil 3D :: Autodesk Subassembly Composer 2013 - Lane Outside Condition?

Jan 31, 2013

Does the 2013 subassembly composer include a way to include a condition based on LANE-OUTSIDE-SLOPE?

The figure below indicates the type of condition I would like to include (red arrows).

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AutoCAD Civil 3D :: Subassembly Composer - Variable Ditch Bottom With Slope And Delta Y

Oct 22, 2012

I'm trying to build the ditch portion of my Subassembly backwards from an offset target "DitchOffset". The elevation of this point should be derived from a point that is using Slope and Delta Y from point "P12" (see attached). Must be at least 1m from the bottom of SubBase with a 5:1 slope. 

The Ditch Bottom will be variable width. I'd like to be able to select my offset alignment for my ditch bottom. Have a link from this point extend at a slope to the Target Surface to complete the foreslope.

I can't quite picture how to complete the links from the DitchOffset point. This may be complicated but the diagram identify what I'm trying to do.

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AutoCAD Civil 3D :: Subassembly Composer 2013 - Change Order Of Input / Output Parameter

Sep 24, 2013

Is there a better an easier way to change the order of input/output parameters in the subassembly that i've created in SAC 2013 than the one where you have to go into a XML-file in the PKT archive file?

I've created my subassembly and I want to control the order of parameters to have a flow similar to the actual workflow.

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AutoCAD Civil 3D :: How To Connect Subassembly To Point 2

Apr 20, 2013

I created one section with two assemblies. Main line assembly and offset (second line) assembly. Each assembly has its own alignment and profile.In strait its all ok, but in curve I get strange situation, that I try to solve. (look to the picture)

I add Mark points on Point 1 and 3. Then connect them using Link Slopes Between Points. Knowing that Point 2 is not static, but moving point I can't find any way to connect subassembly edge point to that Point 2.

So how can I connect subassembly to Point 2? Or maybe there is a smarter way to connect points 1 and 3. Slope from 1 to 2 should be 50:1 and from 2 to 3 should be 1.5:1

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AutoCAD Visual LISP / AutoLISP :: Connect Two Points With Given Elevation Following Surface File / Entities

Dec 4, 2013

I am working on a flood inundation, I would like to find a lisp or command(i'm not finding) to connect two points with a given elevation following the surface file or surface entities. 

here is a small section as example right now it's just guesswork, some of these have taken a week to connect all the sections.

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AutoCAD Civil 3D :: Large Surface - Converting Points To Cogo Points

Mar 5, 2013

I have a large surface (over 1.5 million points and 20 000hectares)

I need to get a point file .csv from the TIN to be able to use it in another program.

-so i've extracted the points from my surface, but they are Autocad points.

-next step is to convert them to civil 3d points.

-I can not select them all when converting them or my computer crashes.

-so i select about 25 000 at a time, the converting takes roughly 10 minutes.

and i have over 1.5 million points to do.

how can i speed this up.

will more ram useful?

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AutoCAD Civil 3D :: How To Make A Tunnel Subassembly With A Surface Target

Oct 15, 2013

I've to make a tunnel on my project. I get some subassembly on web but all the tunnel subassemblies have the target point on Width or Offset Target and Slop or Elevation Target. I don't know whats happens but only my region that owns the tunnel subassembly isn't recognizing on corridor, and isn't drawing on my sections too.

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AutoCAD Civil 3D :: Corridor Surface Not Using Correct Subassembly Point

Apr 29, 2013

I have created a new assembly that uses a HMA dike rather than your typical curb but my surface always begins at the top of the HMA pavement rather than the top of the curb subassembly. See Picture. Where's the setting to fix this (is it a daylight setting) or it is a bigger problem in that I didn't create the subassembly or assembly correct to begin with?

Win7 (x64), EVGA 790i, 8GB RAM, EVGA 8800GT, 250 GB iSSHDD, & RAID 0/1

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AutoCAD Civil 3D :: Add Daylight Subassembly In Order To Grade Surface?

Oct 1, 2013

I'm building up my assembly and I want to add a daylight sub-assembly in order to grade my proposed surface to the existing surface. Typically I would have a 1:3 slope up or down. I have choosen the DaylightGeneral for this and although there is quite a few parameters to play with, I'm only interested in the up/down slope but when I put anything sleeper than 1:4 it doesn't work, I get this red line and circle.

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