Arch Rebar
|
Menu location |
---|
Arch → Rebar tools → Custom Rebar 3D/BIM → Reinforcement tools → Custom Rebar |
Workbenches |
Arch, BIM, Reinforcement |
Default shortcut |
R B |
Introduced in version |
- |
See also |
Arch Structure |
Description
The Arch Rebar tool allows you to place reinforcing bars inside Arch Structure objects.
The Arch Rebar tool is also integrated into BIM Workbench.
Rebar objects are based on 2D profiles such as Draft objects and Sketches, that must be drawn on a face of the structural object. After creation you can adjust the properties of the rebar, including the number and diameter of the bars, and the offset distance between them and the faces of the structural element.
Structural object with two sketches drawn on its faces, which are then turned into two sets of rebar objects
Usage
- Switch to the
Arch Workbench
- Create an
Arch Structure element.
- Switch to the
Sketcher Workbench.
- Select one face of the structural element.
- Press the
New Sketch button to start a new sketch on the selected face.
- Draw the diagram of your bar.
- Press the
Leave Sketch button to finish.
- Switch back to the
Arch Workbench.
- Select the sketch you just drew.
- Press the
Arch Rebar button, or press R then B keys.
- Adjust the desired properties (your rebar might not appear immediately, if some of the properties create an impossible situation, such as the bar diameter being 0, or the offset distances being bigger than the length of the structural element).
Although normally a rebar is used inside an Arch Structure, since FreeCAD 0.19 the rebar can be created outside of any host object. To host a rebar inside an object, you just need to set its DataHost.
Options
- Rebars share the common properties and behaviours of all Arch Components
- The rounding value is expressed in times the diameter. If your bar has a diameter of 5mm, a rounding value of 3 will create rounding at angles with a radius of 15mm.
- Default values for new rebars can be set in the Arch preferences settings.
- If a direction vector is not specified, the direction and distance along which the bars will spread is calculated automatically from the host structural object, by taking the normal direction of the base sketch, and taking its intersection with the structural object. If you specify a direction vector, the length of that vector will also be taken into account.
- The spacing value is calculated from the current amount of bars, and represents the distance between the axes of each bar. You must therefore subtract the bar diameter to obtain the size of the free space between bars.
Properties
- DataAmount: The amount of bars.
- DataDiameter: The diameter of the bars.
- DataDirection: The direction (and length) along which the bars must spread. If the value is (0,0,0), the direction is calculated automatically from the host structural object.
- DataOffset Start: The offset distance between the border of the structural object and the first bar.
- DataOffset End: The offset distance between the border of the structural object and the last bar.
- DataRounding: A rounding value to be applied to the corners of the bars, expressed in times the diameter.
- DataSpacing: The distance between the axes of each bar.
Scripting
See also: Arch API and FreeCAD Scripting Basics.
The Rebar tool can be used in macros and from the Python console by using the following function:
Rebar = makeRebar(baseobj=None, sketch=None, diameter=None, amount=1, offset=None, name="Rebar")
- Creates a
Rebar
object from the givenbaseobj
, which is an Arch Structure, and asketch
as profile.diameter
,amount
, andoffset
are used to define the characteristics of the bars.- If no
diameter
,amount
, oroffset
values are given, the default values from the Arch Preferences are used.
Example:
import FreeCAD, Arch, Part
Structure = Arch.makeStructure(None, length=1000, width=1000, height=3000)
Structure.ViewObject.Transparency = 80
FreeCAD.ActiveDocument.recompute()
p1 = FreeCAD.Vector(-400, 400, 0)
p2 = FreeCAD.Vector(400, 400, 0)
Sketch = FreeCAD.ActiveDocument.addObject('Sketcher::SketchObject', 'Sketch')
Sketch.MapMode = "FlatFace"
Sketch.Support = [(Structure, "Face6")]
Sketch.addGeometry(Part.LineSegment(p1, p2))
FreeCAD.ActiveDocument.recompute()
Rebar = Arch.makeRebar(Structure, Sketch, diameter=80, amount=7, offset=50)
Rebar.OffsetStart = 100
Rebar.OffsetEnd = 100
FreeCAD.ActiveDocument.recompute()
- Elements: Wall, Structure, Curtain Wall, Window, Roof, Space, Stairs, Equipment, Frame, Fence, Truss, Profile, Pipe, Pipe Connector
- Reinforcements: Straight Rebar, U-Shape Rebar, L-Shape Rebar, Stirrup, Bent-Shape Rebar, Helical Rebar, Column Reinforcement, Beam Reinforcement, Slab Reinforcement, Footing Reinforcement, Custom Rebar
- Panels: Panel, Panel Cut, Panel Sheet, Nest
- Materials: Material, Multi-Material
- Organization: Building Part, Project, Site, Building, Level, External reference, Section Plane, Schedule
- Axes: Axis, Axes system, Grid
- Modification: Cut with plane, Add component, Remove component, Survey
- Utilities: Component, Clone component, Split Mesh, Mesh to Shape, Select non-manifold meshes, Remove Shape from Arch, Close Holes, Merge Walls, Check, Toggle IFC Brep flag, 3 Views from mesh, Create IFC spreadsheet, Toggle Subcomponents
- Additional: Preferences, Import Export Preferences (IFC, DAE, OBJ, JSON, 3DS, SHP), IfcOpenShell, IfcPlusPlus, Arch API
![](/images/thumb/9/94/User_hub.png/24px-User_hub.png)
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
- Hubs: User hub, Power users hub, Developer hub