Arch Rebar/uk

StraightRebar

Reinforcement

Description

The Arch Rebar tool allows you to place reinforcing bars inside Arch Structure objects.

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

1. Switch to the BIM Workbench
2. Create an Arch Structure element.
3. Switch to the Sketcher Workbench.
4. Select one face of the structural element.
5. Press the New Sketch button to start a new sketch on the selected face.
6. Draw the diagram of your bar.
7. Press the Leave Sketch button to finish.
8. Switch back to the BIM Workbench.
9. Select the sketch you just drew.
10. Press the Rebar button, or press R then B keys.
11. 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 ДаніHost.

Options

• 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

An Arch Rebar object shares the common properties and behaviors of all Arch Components.

• ДаніAmount: The amount of bars.
• ДаніDiameter: The diameter of the bars.
• ДаніDirection: 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.
• ДаніOffset Start: The offset distance between the border of the structural object and the first bar.
• ДаніOffset End: The offset distance between the border of the structural object and the last bar.
• ДаніRounding: A rounding value to be applied to the corners of the bars, expressed in times the diameter.
• ДаніSpacing: 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 given baseobj, which is an Arch Structure, and a sketch as profile.
  • diameter, amount, and offset are used to define the characteristics of the bars.
  • If no diameter, amount, or offset 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()

StraightRebar

Reinforcement

BIM

• 2D drafting: Sketch, Line, Polyline, Circle, Arc, Arc by 3 points, Fillet, Ellipse, Polygon, Rectangle, B-spline, Bézier curve, Cubic Bézier curve, Point

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• 3D/BIM: Project, Site, Building, Level, Space, Wall, Curtain Wall, Column, Beam, Slab, Door, Window, Pipe, Pipe Connector, Stairs, Roof, Panel, Frame, Fence, Truss, Equipment
  • Reinforcement tools: Custom Rebar, Straight Rebar, U-Shape Rebar, L-Shape Rebar, Stirrup, Bent-Shape Rebar, Helical Rebar, Column Reinforcement, Beam Reinforcement, Slab Reinforcement, Footing Reinforcement
  • Generic 3D tools: Profile, Box, Shape builder..., Facebinder, Objects library, Component, External reference

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• Annotation: Text, Shape from text, Aligned dimension, Horizontal dimension, Vertical dimension, Leader, Label, Axis, Axes System, Grid, Section Plane, Hatch, Page, View, Shape-based view

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• Snapping: Snap lock, Snap endpoint, Snap midpoint, Snap center, Snap angle, Snap intersection, Snap perpendicular, Snap extension, Snap parallel, Snap special, Snap near, Snap ortho, Snap grid, Snap working plane, Snap dimensions, Toggle grid, Working Plane Top, Working Plane Front, Working Plane Side

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• Modify: Move, Copy, Rotate, Clone, Create simple copy, Make compound, Offset, 2D Offset..., Trimex, Join, Split, Scale, Stretch, Draft to sketch, Upgrade, Downgrade, Add component, Remove component, Array, Path array, Polar array, Point array, Cut with plane, Mirror, Extrude..., Difference, Union, Intersection

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• Manage: BIM Setup..., Views manager, Manage project..., Manage doors and windows..., Manage IFC elements..., Manage IFC quantities..., Manage IFC properties..., Manage classification..., Manage layers..., Material, Schedule, Preflight checks..., Annotation styles...

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• Utils: Toggle bottom panels, Move to Trash, Working Plane View, Select group, Set slope, Create working plane proxy, Add to construction group, Split Mesh, Mesh to Shape, Select non-manifold meshes, Remove Shape from Arch, Close Holes, Merge Walls, Check, Toggle IFC Brep flag, Toggle subcomponents, Survey, IFC Diff, IFC explorer, Create IFC spreadsheet..., Image plane, Unclone, Rewire, Glue, Reextrude
  • Panel tools: Panel, Panel Cut, Panel Sheet, Nest
  • Structure tools: Structure, Structural System, Multiple Structures
  • IFC tools: IFC Diff..., IFC Expand, Make IFC project, IfcOpenShell update
  • Nudge: Nudge Switch, Nudge Up, Nudge Down, Nudge Left, Nudge Right, Nudge Rotate Left, Nudge Rotate Right, Nudge Extend, Nudge Shrink

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• Additional: Preferences, Fine tuning, Import Export Preferences, IFC, DAE, OBJ, JSON, 3DS, SHP

User documentation

• 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

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• Help: Tutorials, Video tutorials
• Workbenches: Std Base, Assembly, BIM, CAM, Draft, FEM, Inspection, Material, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework

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• Addons: Addon Manager, External workbenches, Scripting and macros

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