BIM Arbeitsbereich

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Einleitung

Der BIM Arbeitsbereich ist eine externe Arbeitsbereiche mit dem Ziel, vollständige Building Information Modeling (BIM) Werkzeuge und Arbeitsabläufe in FreeCAD zu implementieren. Sie sieht derzeit sehr ähnlich wie der eingebaute Arch Arbeitsbereich aus. Die allgemeine Idee ist jedoch, als "Meta Werkbank" zu arbeiten und an einem Ort verschiedene Werkzeuge von anderen Arbeitsbereichen, die für BIM nützlich sind, zu sammeln und einen Arbeitsablauf zu schaffen, der sowohl für erfahrene BIM Anwender, die von anderer Software wie Revit oder ArchiCAD kommen, als auch für Neueinsteiger bequemer, einfacher und benutzerfreundlicher ist. Der BIM Arbeitsbereich bietet auch eine Reihe von eigenen Werkzeugen, bei denen es sich meist um Assistenten und Verwaltungswerkzeuge handelt, die sich unter dem Menü Verwaltung befinden.

Installieren

The BIM workbench is not bundled with the default FreeCAD package, but can easily be installed via the Addon Manager. Invoke the it from Tools → Addons Manager. The BIM workbench code is hosted and developed on github and can also be installed manually by copying it into FreeCAD's MOD directory. The BIM workbench is a work in progress, and will change often. Be sure to update it regularly!

Getting started

Upon starting the BIM workbench for the first time, a welcome dialog is shown, giving a quick overview of how the workbench works, and allowing the user to start an in-game tutorial. The welcome dialog is also available from the help menu. When the welcome screen is closed by clicking OK, the BIM setup dialog will be shown, that allows the user to quickly set some of the most common BIM-related preferences of FreeCAD without the need to browse through the full FreeCAD preferences pages.

The BIM project setup tool allows you to quickly setup a BIM project by filling some basic information about your project. You can then, for example, use the different 2D drafting tools to sketch guidelines and baselines, then use the different 3D modeling tools to build 3D BIM objects on top of it.

If you are used to another BIM application, check our BIM application compatibility table to get your marks when starting with FreeCAD.

Tools

The BIM workbench gather tools from several other FreeCAD workbenches, mainly Draft, Arch and Part, roughly reorganized in logical categories: 2D drafting, 3D modeling, annotation and modification tools. The manage category contains tools that are specific to the BIM workbench.

Additionally, if such addons are installed, tools from Reinforcement (extra reinforcing bar tools), Fasteners (bolts and screws), Flamingo (metal structure and piping tools) and Parts Library are automatically included in the BIM workbench.

The BIM workbench also adds a series of items in the status bar of FreeCAD, and a couple of context menu items, accessible by right-clicking in the 3D view or in the tree view.

2D drafting

2D objects are commonly used as drafting aids, or to draw base lines and profiles to build BIM objects on. They can also be used to draw symbols and annotations in your model. Apart from sketches, that use their own coordinate system, 2D objects will be drawn on the current working plane.

Line: Draws a line segment between 2 points
Wire: Draws a line made of multiple line segments (polyline)
Circle: Draws a circle from center and radius
Arc: Draws an arc segment from center, radius, start angle and end angle
Ellipse: Draws an ellipse from two corner points
Polygon: Draws a regular polygon from a center and a radius
Rectangle: Draws a rectangle from 2 opposite points
BSpline: Draws a B-Spline from a series of points
Cubic Bezier Curve: draws a Bezier curve of third degree by dragging two points.
Bezier Curve: Draws a Bezier curve from a series of points
Point: Inserts a point object
Sketch: Creates‎ a new sketch and enters sketch drawing mode

Annotation

Annotations are visual help objects that can be placed inside your model. They can be used to export your model directly to a 2D format like DXF, or reused when creating 2D views of your model with the TechDraw Workbench.

Text: Draws a multi-line text annotation
ShapeString: The ShapeString tool inserts a compound shape representing a text string at a given point in the current document
Dimension: Draws a dimension annotation
Label: Places a label with an arrow pointing to a selected element introduced in version 0.17
Axis and grid tools : Adds axes and grid objects to the document
Section Plane: Adds a section plane object to the document. Section planes define 2D views such as plans, sections and elevations

3D / BIM modeling

3D and BIM objects are the real-world elements that will compose your BIM project.

Building Part: Creates a building part including selected objects. Building parts are commonly used to represent levels
Building: Creates a building including selected objects
Site: Creates a site including selected objects
Reference: Links objects from another FreeCAD file into this document
Wall: Creates a wall from scratch or using a selected object as a base
Structural element: Creates a structural element from scratch or using a selected object as a base
Rebar: Creates a reinforcement bar in a selected structural element using a sketch. Requires the Reinforcement addon
Window: Creates a window using a selected object as a base
Pipe tools: Creates pipes and corner or tee connection between 2 or 3 selected pipes
Stairs: Creates a stairs object in the document
Roof: Creates a sloped roof from a selected face
Panel tools: Creates panel objects, and 2D cutouts from these panels
Library: Inserts an equipment or furniture object. Requires the Parts Library addon
Frame: Creates a frame object from a selected layout
Box: Draws a box by specifying its dimensions graphically
Shapebuilder: A tool to create more complex shapes from various parametric geometric primitives
Facebinder: Creates a new object from selected faces on existing objects
Space: Creates a space object in the document

Modification tools

Move: Moves object(s) from one location to another
Copy: Copies object(s) from one location to another
Rotate: Rotates object(s) from a start angle to an end angle
Clone: Clones the selected objects
Offset: Moves segments of an object about a certain distance
2D Offset: Constructs a parallel wire at certain distance from original, or enlarges/shrinks a planar face ((parametric version)
Trim/Extend (Trimex): Trims or extends an object
Scale: Scales selected object(s) around a base point
Stretch: Stretches the selected objects
Array: Creates a polar or rectangular array from selected objects
Path Array: Creates an array of objects by placing the copies along a path
Mirror: Mirrors the selected objects
Extrude: Extrudes planar faces of an object
Cut: Cuts (subtracts) one object from another
Union: Fuses (unions) two objects
Common: Extracts the common (intersection) part of two objects
Compound: Creates a compound from the selected objects
Simple copy: Creates a non-parametric copy of a selected object
Upgrade: Joins objects into a higher-level object
Downgrade: Explodes objects into lower-level objects
Shape 2D View: Creates a 2D object which is a flattened 2D view of another 3D object
Draft to Sketch: Converts a Draft object to Sketch and vice-versa
Cut with plane: Cut an object according to a plan.
Add component: Adds objects to a component
Remove component: Subtracts or removes objects from a component

Management tools

BIM setup: Configures some of the FreeCAD preferences most commonly used for BIM
Project setup: Allows to create some basic objects such as a site, a building and axes by filling basic project information.
File:BIM Levels.png Levels manager: Manage the levels of your project
Windows manager: Manage the doors and windows of your project
IFC elements manager: Manage how the different elements of your project will be exported to IFC
Views manager: Opens a window that contains the different views and levels of your project, for quick access
Classification manager: Manage how objects and materials of your project relate to classifications systems such as Uniclass
Material: Creates a material or multimaterial
Schedule: Creates different types of schedules

External workbenches

FreeCAD workbenches are easy to program in Python, there are therefore many people developing additional workbenches outside of the FreeCAD main developers.

The external workbenches page has some information and tutorials on some of them, and the FreeCAD Addons project aims at gathering them and making them easily installable from within FreeCAD.

New workbenches are in development, stay tuned!