recover drawing auto civil 3d
ane. Introduction
In Autodesk Civil 3D, sometimes, the designer sends us a corridor as a 3D Object. Extracting sure information on the corridor might prove to exist a bit complicated here. Therefore, in this Civil 3D tutorial, we volition focus on excavation and how to extract 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 will be used as an example, the designer has sent us 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.
2. Model Configuration
First, we must configure the received model, and as in case of any model we must take into consideration the post-obit aspects:
1- To be able to access the terrain model through the shortcuts of our projection.
2- To have the coordinate systems configured, in both models, according to the location of the project and the designer'southward specifications.
3- To take the surface styles configured, in club to be able to work correctly.
(In this step we can import the surface styles from the _AutoCAD_Civil_3D_2018_ENG.dwt template. This can be done in Manage/Styles/Import).
three. Obtaining the surface of the corridor
Parting from the fact that we only have 3D objects, in lodge to exist able to bear out this operation, we must perform some previous tasks.
3.1. REMOVING LINES
In lodge to obtain a surface and given the limitations that Civil 3D imposes on us when handling 3D objects, we must extract the lines from the model and then use them to create the surface.
So, for this purpose we must deport out the following steps:
one- We change the workspace to 3D Modeling
ii- With the hidden terrain, we select "all" the 3D objects of the corridor and go to the Solid/ Solid Editing/ Excerpt Edges carte du jour. (This activity 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 up our corridor. After this process, they take ceased to be 3D Objects and can be used and manipulated.
At this fourth dimension we are prepared to create our surface.
three.ii. CREATE SURFACE
ane- We alter back to the initial workspace
2- Create a surface (Toolspace window/ Prospector / Correct push on surface / Create Surface).
iii- We are now located within the surface in the section "Drawing objects / Add…"
4- In the pop-upward card, we select lines and accept. Adjacent, nosotros select "all lines" of our corridor and press Enter.
5- Nosotros select as surface fashion: 2d Triangles (Continue in mind that every bit it is in 2D we must take selected the superlative view to be able to visualize them).
At this time, and generally, creating the surface in Ceremonious 3D creates triangles that should non exist. Nosotros must "clean" the surface by eliminating said triangles so that it fits into our corridor.
Below we tin can see the corridor earlier and afterward creating the surface:
half-dozen- We can perform the elimination of the remaining triangles in ii different ways:
- Prospector carte du jour / Surface / {Our surface} / Definition / right button editions / Delete Line.
- Workspace: 3D Modeling
Nosotros select the surface and in the carte du jour 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 below the surface and we use it as a guide)
4. Calculating Volume
There are two ways to perform this calculation. Between the ii options bachelor, depending on the model we use, we can observe a 2% deviation in the total earthwork. Therefore, information technology is upwards to the user to determine which is the most optimal in each case.
4.i. COMPARISON OF EXISTING SURFACES
In this instance, the fastest and simplest, we only take to become to menu Clarify / Control center of volumes.
We click on ane and in the pop-up window (2) we utilise:
Equally Base of operations Surface: The terrain provided
Comparing Surface: The created surface
We configure the rest of the options and we run across the resulting cuttings, filling and calculation of earthworks.
4.2. 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 Wedlock NATURAL TERRAIN WITH CORRIDOR SURFACE
one- Create new surface (name example: surface_union)
2- In bill of fare Prospector / Surfaces / surface_union / definition / editions Right button / paste surface. Nosotros select the natural terrain
3- Nosotros create an interior contour in the Definition
In the pop-up window, we select hibernate and name it.
4- In the lower bar it asks us to select object or Surface: Printing Southward to select surface. Nosotros select the surface created in the department.
v- We follow the steps of signal 2 of this section and select the surface created in section three.
four.2.3 Comparison OF EXISTING SURFACES
The same steps are followed equally in section 4.1.
five. Example
In this section, we will make a comparing of the measurements provided, from the methods described higher up and those resulting from the file in IFC format.
We take as a sample a given axis:
From here we can excerpt that between the commencement and second method no significant changes are appreciated in the scope of a big-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, we can conclude that there is some type of failure in the IFC from Autodesk Civil 3D or a misinterpretation of the book parameter of slopes and embankments.
In addition, it has likewise 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 example, it tin not exist extrapolated to any IFC format file. This should be 1 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 instance, it is estimated that the designer/modeler must provide the model prepared to take the measurements correctly and without misunderstandings. In the case of providing an IFC, it must be correctly configured and checked for its agreement with the original model.
6. Disclaimer
The information independent in this document is based on the personal feel 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 you have any questions regarding the procedure, you lot can find more than information and help at https://forums.autodesk.com/ .
Source: https://www.e-zigurat.com/blog/en/civil-3d-tutorial/
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