There are many cases you would like to or you need to use a special 3D visualization allowing an insight into building spaces.
This article describes the steps of creating such a spectacular but simple 3D Cut, using ArchiCAD’s 3D Document feature.
Step 1: Create Model
In our example we are working with Elizabeth Tower project, designed by Andrea Horvath and Kiss Iosif-Andrei (winners of ArchitectsJury competition) to demonstrate the workflow of creating a plain 3D Cut view.
Step 2: Cut Model
The 3D window is the source of your 3D Document, so in the next step we need to create a 3D cut view.
There are 2 ways to achieve this:
1: Select elements with the thick dashed line contour Marquee (All Stories method) on all Stories of the Project.
To show only the marqueed elements in 3D, use the View > Elements in 3D View > Show Selection/Marquee in 3D command.
TIP: By default, the elements inside the Marquee will be displayed and they will be cropped to the marquee area. However, you can adjust the Marquee effect to show the elements outside the marquee instead of those inside: use the Marquee Effect controls in View > Elements in 3D View > Filter Elements in 3D, and choose the Outside Marquee radio button.
2: Set 3D Cutting Planes: Use the View > Elements in 3D View > 3D Cutting Planes command to open this dialog box.
To create a section, draw a line through any of the views which represents a cutting plane perpendicular to the given orthogonal view.
The Eyeball cursor appears after you have drawn each line, prompting you to click on whichever side of the line you would like removed.
You can see the result of this 3D Cut by turning on View > Elements in 3D View > 3D Cutaway option.
Step 3: Create 3D Document
By right clicking on the 3D view (Generic Perpective or Axonometry) in Navigator, you can select “New 3D Document” from the context menu.
In the appearing dialog type the Reference ID and the Name of the 3D Document. It will be generated by clicking on Create button. The current view of 3D will be displayed
Step 4: Set Cut Elements to a Uniform Pen Color
Right click on 3D Document view in tha Navigator and select “3D Document Settings” to set the Model Display. For cut elements change the “Fill Cut Surfaces with” to Uniform Material . This option means that all cut surfaces in this 3D Document will use a single material selected below.
Step 5: Set Uncut Elements to a Uniform Pen Color
In the opened 3D Document Selection Settings dialog you can also change the display of uncut elements to Uniform pencolor. Here you can choose the desired custom Pen (this case we have selected white from ArchiCAD’s Pen Colors)
To get an even spatial model view, there is possibility to turn on Sun Shadows in 3D Document Settings. The generated Sun position can be modified to the 3D Document only with “Redefine 3D Projections…” option.
The generated 3D Docuent with Shadow Settings:
Dimensions and Notes
The converted 3D view is a document to which you can add dimensions, labels and additional 2D drawing elements.
To place them just use ArchiCAD’s dimensioning tools, plus certain dimensioning functions that are available only for 3D Documents.
More tips on BIM ENGINE BLOG
TIP: Slice a model for visualisation on ArchiCAD-Talk