I am in need of subtracting Surface A from Surface B to display the surface intersections between the two. I have a geological top of clay surface and a bottom of clay surface where the bottom intersects with the top thus showing holes in a geological clay layer. I am wanting to know if Civil 3D supports the subtracting of two surfaces.
View 6 RepliesI am working on the attached file. I need to either subtract or surface trim the corners of the cylinder but when I try to do either some other surfaces that i did not select get trimmed. 6.dwg
View 4 Replies View RelatedI have an assignment. I've done all the work until i reached the end of it which is adding 2 cylinders to a weird looking object.
I'm trying to put the cylinder which shares a space between a wedge and a region but I'm unable to subtract it.
I am in the 3d modeling view, and have extruded closed polylines. when i go to subtract the object inside the other it won't subtract the command says <Modeling Operation Error: failure in face-face intersection merging algorithm>
I don't know how to fix it.
I often have to do storm pond surfaces that (for the purposes of planning) are flat on the bottom. These surfaces are created from a combination of survey data and grading groups and the tin of these surfaces is perfectably acceptable. However, when contours are shown, the flat bottom is shown with contours jig-jagging all over the place.
The attached image shows a comparison of the same pond. The top was created with survey data and grading groups; the bottom was created using contour data only. The generated surface on the top shows the bottom contour going in different directions and has parts where the an expected contour is missing.
How to correct/manipulate the surface to show a proper flat surface?
Has instances where you set your tolerance for the maximum triangle lenth to say 50m to reduce the amount of triangles along the edge that run at long distances. When I do this I end up with multiple surface holes and I'm not sure why as there are points in the area.
I thought well maybe it's because i should've reduced my max triangles first then added breaklines. Would this matter? I also thought I could add a line to the surface to fix the holes vs. deleting surface lines along the entire edge of a surface for many many miles.
I am trying to add points into a surface. I have done this before without any problems, but now I am having issues.
When I ID points which makes up the surface it gives me the correct Z level e.g. 24.5m, however when I hover over the surface it shows me the surface name and a different z level e.g. 0.65m. What is the reason for this difference in z levels? I think this may be causing the issue I am having when I add new points.
I select the surface and use the 'edit surface command' in the ribbon, choosing add point.
When I add a point at the level I require(23.89m), it puts it in a lot higher than the surrounding area, so I tried to put the point in to the lower z levels (0.4m) it puts it in a lot lower!
My goal is coming up with the volume bounded by the design surface and the existing surface. I don't have the design surface modeled yet.
Do i need to create alignment offsets?. Alignment 1 profile view is also attached. Then Alignment2.
What about starting with alignment1 profile view? Since I have created a polyline as the design profile ?
how do I shrink labels? Where is it in the settings ; the Align folder had been check.
I am issues with DEM files that I am downloading from the USGS website.I download 24k, elevation for the area I need. I then choose staged 1 second, add a surface to a blank drawing, then upload the DEM files to the surface.
The surface imports correcty, but when I try to import points taken by a surveyor on the same drawing, they plot incorrectly.The DEM surface and the points from the surveyor do not correspond. Also, the DEM surface is in meters, not feet. I have tried changing drawing settings, datum types, coordinate types, etc.
Is there any way to change the referenced surface on a Surface Elevation Label. I can see the surface in the properties but cannot change it.
C3D 2011
I have a project involving 3 programs. I am creating a planned development in 3d to be 3d printed when finished. The project is a 5 acre tract containing 8 buildings. I have built the surface in C3D and each building in Revit. The buildings are not in the same Revit file. For my solid work, I will bring the files over into 3ds Max Design to section into smaller quadrants to build in the 3d printer.
The questions:
Would it be better to import the surface into Revit to merge surface and buildings together?
Would it be better to import the buildings into C3D to merge entities?
Would it be better to bring those entities into 3ds Max and then merge them into one? Will 3ds Max Design allow me to insert entities accurately in the environment?
I need to create a sub-set surface from my main surface. not sure what the vernacular is for a "subset surface" in c3d but i do have a feature line that bouinds the desired area, but that is as far as i can solve.
i did try creating a new surface - pasted the main surface in the edit definition, then deleted triangles until the boundary alighned wiht my featureline. This seemed to work, but when i view the properties of the smaller subset suface, it shows a mimum and maximum elevation that is incorrect.
Im currently using an addon for Civil 3D called Novapoint. It allows me to create 3D models of surfaces made out of 3d faces and easily models cut and fill 3d-models for me.
The only thing i need to create a cut and fill model is one or several ground surfaces (existing ground, earth layers, rock etc. whatever i need) and a closed polyline/3Dpolyline that represents the level I want my cut and/or fill model.
I enter the spcifications I want such as; earth cut angle, rock cut angle, fill angle, select which surfaces i want to include in the model calculation and select the polyline.Novapoint then calculates the cut/fill model from the surfaces to the polyline and models the different cut/fill angles and gives me the results in a 3d-face model and a specification of the volyme of rock cut, earth cut an fill.
1. Novapoint is quite unstable and crashes alot
2. You cant create profiles out of 3d faces
3. Novapoint does not automaticly combine the start surfaces with the modeled cut/fill surface
4. A large surface made out of 3d-faces demands alot of computer power
So I want to how I do the same that Novapoint does for me in Civil 3D? (I have access to Civil 3D 2007-2013 depending on which one you're using)I know I can take the 3Dfaces i created in Novapoint and make a surface in Civil 3D with them but I want to exclude Novapoint completely.
all of a sudden whenever I run audit on my corridor file the surface definition becomes a snapshot. To add to the drama, the corridor surface will not paste into an empty surface. Why?
View 2 Replies View RelatedMy problem added with pic ... I want to make volume calculate for sample road project. When I try to compute materials I cant use Corridor surface for DATUM... There is only target surface on option..
View 2 Replies View RelatedI am trying to visualize a road project. The problems is, whenever the corridor surface goes below the EG surface (when the road is in cut) the EG surface is the only visible surface.
I sort of need to subtract the corridor surface from the EG surface, or merge the both surfaces into one.
I was wondering if there is an easy way to trim one surface to another. Right now, I have two slopes (3:1) that are perpendicular to each other. They meet at a corner and I have extended them past each other so that I could see the intersecting edge. Now I would like to trim them to each other like you would a polyline etc... but I am not sure how to do this.
If I select surf trim, it tells me they are the wrong object type, but they are tin surfaces?
I used a 2d polyline to create a surface boundary for a surface created. The polyline is a closed loop. For the boundary type it is outer, unchecked Non-destructive breakline, and mid-ordinate distance = 1.
My problem is that when I do this I only get a small portion of the surface to show up within my surface boundary. If I don't have a surface boundary the entire drawing surface shows up no problem.
The purple polyline is my boundary and the light blue is the surface created within the boundary.
Is it possible to export created surface from civil to revit architecture? If yes , How? And if its not possible - maybe i can somehow import cogo points to revit?
View 6 Replies View RelatedI'm trying to subtract the figure that is attached to union the 3d solids on the "Layer2" layer and subtract them from the 3d solid on layer "Mesh". For some reason I can't do neither.
View 5 Replies View Related3D Cylinders.jpg.How do subtract/cut the part of the magenta cylinder inside the gray cylinder from the attached pdf?
View 9 Replies View RelatedI am currently working on a 3d model which can be seen attached. All I d like to do is subtract so that when using the HIDE tool I am able to see inside the model. For some reason I am not able to carry this task out.
View 9 Replies View RelatedI have a solid of a vortex breaker for a nozzle in a cone, from which I subtracted the cone. But when I attempt to subtract the nozzle as well, it will not subtract. I have verified that both entities are solids. I copied them into a new drawing by themselves. I even rebooted my computer--all to no avail. I have attatched a drawing of the two solids.
View 2 Replies View RelatedI'm using the AutoCAD Mechanical 2013 student edition and I can't subtract items inside a region that i made. I type the command subtract>select the region to subtract from>Enter>select objects to subtract>Enter and nothing happends =/
Here is my file, if you'd like to take a look (the outer portion is my region and I want to subtract everything that's inside it)
I have two boxes stacked on top of each other. On the top I have a rectangle which I want to extrude down through the first box and partially through the second box and then subtract the extruded rectangle from the two stacked boxes. Extrude works fine, but when I use subtract it only removes the area from the first box. The bottom box remains solid despite having "extruded" the rectangle down through the bottom box as well.
I've tried joining the two boxes into a single object before using extrude and subtract, but for some reason the join command won't work in this case.
I've got four objects. One of these objects is a cylinder. I want to remove some material from the cylinder. The material which I want to remove is specified by the other three objects.
Basically:
my target model = cylinder - (sum of other objects)
Where I am joining 2 solids (like plywood sitting in a dado joint), how can I have one solid be carved out where the 2nd solid overlaps it, without deleting the 2nd solid.
what SUBTRACT does but without the deleting.
Recently have had AutoCAD re installed and and am having trouble unioning and subtracting the two solids in the attached file. Other objects will occasionally subtract and union with these objects, but only occasionally.
View 4 Replies View RelatedI'm working on a grading plan which excavates down from just outside the waterline of an existing pond. When I create a surface from the grading, it looks like a whole bunch of strange break lines have been added, messing up the surface. I thought it might be the mid ordinate distance but changing that doesn't seem to fix it it. Interestingly, when I grade from the original waterline, this doesn't seem to happen.
Here is my workflow, a picture of the result is shown below.
1. Turned the current waterline into a feature line.
2. Created new feature line by offsetting outside that feature line by 3.16 ft.
3. From new feature line, grade down 10 feet at 3:1
4. Create new surface using grading.
The grading lines (shown in white) look correct. But when I create the surface (green and yellow), it is all messed up.
If I change a point or link code in one of my subassemblies, is there a way I can build my top surface using those?
View 9 Replies View RelatedI know my surface is there but somewhere I have turned it off.
I know the surface is there but I'm not able to see it.
Can you paste a surface from a different dwg?