how to draw feature lines in civil 3d
one. Introduction
In Autodesk Civil 3D, sometimes, the designer sends us a corridor as a 3D Object. Extracting certain information on the corridor might prove to be a fleck complicated here. Therefore, in this Ceremonious 3D tutorial, we will focus on earthworks and how to excerpt a surface from the model provided, and finally, through the volume control center, to obtain the m3 of cuttings and embankments.
In the model that will be used as an example, the designer has sent united states of america the following:
- The terrain model associated with the location of the corridor.
- The model of the corridor as a 3D object.
- IFC file extracted from the original Civil 3D model.
ii. Model Configuration
Commencement, we must configure the received model, and as in example of any model we must accept into consideration the post-obit aspects:
1- To exist able to admission the terrain model through the shortcuts of our project.
2- To have the coordinate systems configured, in both models, according to the location of the projection and the designer's specifications.
3- To accept the surface styles configured, in gild to be able to work correctly.
(In this step we tin import the surface styles from the _AutoCAD_Civil_3D_2018_ENG.dwt template. This can exist done in Manage/Styles/Import).
three. Obtaining the surface of the corridor
Parting from the fact that we but have 3D objects, in guild to exist able to carry out this operation, we must perform some previous tasks.
three.ane. REMOVING LINES
In order to obtain a surface and given the limitations that Civil 3D imposes on us when handling 3D objects, nosotros must excerpt the lines from the model and then use them to create the surface.
So, for this purpose we must carry out the post-obit steps:
ane- We change the workspace to 3D Modeling
2- With the hidden terrain, we select "all" the 3D objects of the corridor and become to the Solid/ Solid Editing/ Extract Edges carte du jour. (This action may require some time depending on the model and the PC you are using).
This style nosotros volition obtain all the lines that made upwards our corridor. After this process, they have ceased to be 3D Objects and tin can be used and manipulated.
At this time we are prepared to create our surface.
3.2. CREATE SURFACE
1- Nosotros change back to the initial workspace
2- Create a surface (Toolspace window/ Prospector / Right button on surface / Create Surface).
3- We are now located inside the surface in the section "Drawing objects / Add together…"
4- In the pop-upwardly carte, we select lines and accept. Next, nosotros select "all lines" of our corridor and press Enter.
5- Nosotros select as surface style: 2D Triangles (Keep in mind that equally information technology is in second we must have selected the peak view to be able to visualize them).
At this time, and mostly, creating the surface in Civil 3D creates triangles that should non exist. We must "clean" the surface by eliminating said triangles so that it fits into our corridor.
Below we tin can see the corridor before and after creating the surface:
6- We can perform the elimination of the remaining triangles in two different ways:
- Prospector bill of fare / Surface / {Our surface} / Definition / right button editions / Delete Line.
- Workspace: 3D Modeling
We select the surface and in the menu that appears Edit/Edit Surface/Delete Line.
In this fashion, we must eliminate all the remaining lines until we lucifer our surface with the model provided (This appears below the surface and nosotros employ it every bit a guide)
4. Calculating Volume
In that location are 2 ways to perform this adding. Between the 2 options available, depending on the model we use, nosotros tin can find a ii% deviation in the full earthwork. Therefore, it is up to the user to decide which is the well-nigh optimal in each case.
4.1. Comparison OF EXISTING SURFACES
In this case, the fastest and simplest, we only take to get to carte du jour Clarify / Command center of volumes.
Nosotros click on ane and in the pop-upwardly window (2) we use:
As Base Surface: The terrain provided
Comparison Surface: The created surface
Nosotros configure the balance of the options and we see the resulting cuttings, filling and calculation of earthworks.
four.2. COMPARISON OF 2 Country SURFACES
For this method, information technology is necessary to create a surface in which the original land will be emptied using our surface created in department three.
4.2.1. CREATE SURFACE Spousal relationship NATURAL TERRAIN WITH CORRIDOR SURFACE
i- Create new surface (name example: surface_union)
2- In carte du jour Prospector / Surfaces / surface_union / definition / editions Right button / paste surface. We select the natural terrain
iii- We create an interior contour in the Definition
In the pop-upward window, we select hide and name it.
4- In the lower bar it asks us to select object or Surface: Press Southward to select surface. We select the surface created in the section.
5- We follow the steps of point 2 of this department and select the surface created in section three.
four.2.iii Comparing OF EXISTING SURFACES
The aforementioned steps are followed equally in section iv.1.
5. Example
In this section, nosotros will make a comparison of the measurements provided, from the methods described higher up and those resulting from the file in IFC format.
Nosotros take every bit a sample a given centrality:
From hither we can extract that between the showtime and second method no significant changes are appreciated in the telescopic of a large-scale work. However, in the third method, we perceive a remarkable difference that should not exist since it comes from the same model. From this, nosotros can conclude that in that location is some type of failure in the IFC from Autodesk Civil 3D or a misinterpretation of the volume parameter of slopes and embankments.
In addition, it has also been proven that Naviswork is non able to obtain the information related to the measurement based on the IFC provided.
Note: At any time reference is made to a specific case, it tin can non be extrapolated to whatever IFC format file. This should be one of the right formats to be able to make measurements. Hence the importance of the IFC being a true reflection of the original model.
In whatever instance, it is estimated that the designer/modeler must provide the model prepared to accept the measurements correctly and without misunderstandings. In the case of providing an IFC, it must exist correctly configured and checked for its agreement with the original model.
6. Disclaimer
The data contained in this document is based on the personal experience of the author and based on the data provided by Autodesk, therefore it is non possible to ensure that this method works in all cases and/or changes with the update of the program.
Sufficient knowledge must exist bachelor to address the content of this manual.
If you take whatsoever questions regarding the procedure, you can find more information and assistance at https://forums.autodesk.com/ .
Source: https://www.e-zigurat.com/blog/en/civil-3d-tutorial/
0 Response to "how to draw feature lines in civil 3d"
Post a Comment