draw order in viewport civil 3d
1. Introduction
In Autodesk Civil 3D, sometimes, the designer sends us a corridor as a 3D Object. Extracting certain data on the corridor might prove to be a bit 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 command center, to obtain the m3 of cuttings and embankments.
In the model that volition be used as an case, 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 equally a 3D object.
- IFC file extracted from the original Civil 3D model.
ii. Model Configuration
First, nosotros must configure the received model, and every bit in case of any model we must have into consideration the following aspects:
1- To be able to admission the terrain model through the shortcuts of our project.
2- To take the coordinate systems configured, in both models, according to the location of the project and the designer'southward specifications.
three- To have the surface styles configured, in social club to be able to piece of work correctly.
(In this stride we can import the surface styles from the _AutoCAD_Civil_3D_2018_ENG.dwt template. This can be washed in Manage/Styles/Import).
3. Obtaining the surface of the corridor
Parting from the fact that we just take 3D objects, in order to be able to carry out this functioning, we must perform some previous tasks.
3.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 extract the lines from the model and and so apply them to create the surface.
So, for this purpose we must carry out the following steps:
ane- We change the workspace to 3D Modeling
2- With the hidden terrain, we select "all" the 3D objects of the corridor and go to the Solid/ Solid Editing/ Extract Edges menu. (This action may require some time depending on the model and the PC y'all are using).
This way we will obtain all the lines that made upwards our corridor. Later this process, they have ceased to be 3D Objects and tin be used and manipulated.
At this time we are prepared to create our surface.
three.2. CREATE SURFACE
one- We change back to the initial workspace
two- Create a surface (Toolspace window/ Prospector / Right push on surface / Create Surface).
3- Nosotros are now located inside the surface in the section "Cartoon objects / Add…"
4- In the pop-upwards carte du jour, nosotros select lines and accept. Adjacent, we select "all lines" of our corridor and printing Enter.
v- We select as surface style: second Triangles (Keep in heed that as it is in 2D we must have selected the elevation view to be able to visualize them).
At this time, and generally, creating the surface in Civil 3D creates triangles that should not exist. We must "clean" the surface by eliminating said triangles and then that it fits into our corridor.
Beneath we tin see the corridor before and after creating the surface:
half-dozen- We can perform the elimination of the remaining triangles in two different ways:
- Prospector bill of fare / Surface / {Our surface} / Definition / right push button editions / Delete Line.
- Workspace: 3D Modeling
We select the surface and in the card that appears Edit/Edit Surface/Delete Line.
In this way, we must eliminate all the remaining lines until we match our surface with the model provided (This appears beneath the surface and nosotros use it as a guide)
4. Calculating Volume
At that place are 2 ways to perform this calculation. Between the ii options available, depending on the model we use, nosotros tin can observe a two% difference in the total earthwork. Therefore, it is up to the user to decide which is the most optimal in each instance.
4.1. Comparing OF EXISTING SURFACES
In this case, the fastest and simplest, we only take to get to card Analyze / Control centre of volumes.
We click on 1 and in the popular-upward window (ii) we use:
As Base Surface: The terrain provided
Comparison Surface: The created surface
We configure the remainder of the options and nosotros see the resulting cuttings, filling and calculation of earthworks.
4.two. COMPARISON OF Two Land SURFACES
For this method, it is necessary to create a surface in which the original land will be emptied using our surface created in section 3.
4.2.one. CREATE SURFACE UNION NATURAL TERRAIN WITH CORRIDOR SURFACE
1- Create new surface (proper name example: surface_union)
2- In menu Prospector / Surfaces / surface_union / definition / editions Correct push button / paste surface. We select the natural terrain
3- We create an interior contour in the Definition
In the pop-up window, we select hide and name it.
4- In the lower bar it asks the states to select object or Surface: Press South to select surface. We select the surface created in the section.
5- We follow the steps of point 2 of this section and select the surface created in section iii.
4.2.iii COMPARISON OF EXISTING SURFACES
The same steps are followed as in department four.1.
5. Example
In this section, we will make a comparison of the measurements provided, from the methods described to a higher place and those resulting from the file in IFC format.
We take as a sample a given axis:
From hither we tin excerpt that between the first and second method no significant changes are appreciated in the scope of a large-scale work. Nonetheless, 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 there is some type of failure in the IFC from Autodesk Civil 3D or a misinterpretation of the volume parameter of slopes and embankments.
In add-on, information technology has also been proven that Naviswork is not able to obtain the data related to the measurement based on the IFC provided.
Note: At any time reference is made to a specific case, information technology can non be extrapolated to any IFC format file. This should be one of the correct formats to exist able to make measurements. Hence the importance of the IFC being a true reflection of the original model.
In whatever case, it is estimated that the designer/modeler must provide the model prepared to take the measurements correctly and without misunderstandings. In the instance of providing an IFC, it must be correctly configured and checked for its understanding with the original model.
6. Disclaimer
The information contained in this certificate is based on the personal experience of the author and based on the information provided by Autodesk, therefore it is not possible to ensure that this method works in all cases and/or changes with the update of the program.
Sufficient knowledge must be available to address the content of this manual.
If y'all have whatever questions regarding the procedure, yous tin can notice more information and assist at https://forums.autodesk.com/ .
Source: https://www.e-zigurat.com/blog/en/civil-3d-tutorial/
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