Arch: Rebar BentShape/Арматурная изогнутая форма

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Arch Rebar BentShape.svg Arch Rebar BentShape

Menu location
Arch → Rebar tools → Bent-Shape Rebar or 3D/BIM → Reinforcement → Bent-Shape Rebar
Arch, BIM
Default shortcut
Introduced in version
See also
Reinforcement, Arch Rebar, Arch Rebar Stirrup


Инструмент Arch Rebar BentShape.png Bent Shape Rebar позволяет пользователю создавать в структурном элементе арматурный стержень с изогнутой формой.

The BentShape Rebar tool is also integrated into BIM Workbench.

This command is part of the Reinforcement Workbench, an external workbench that can be installed with the AddonManager.svg Addon Manager via the Tools → Addon manager → Reinforcement menu.

Arch Rebar BentShape example.png



  1. Select any face of a previously created Arch Structure.svg Arch Structure object.
  2. Then select Arch Rebar BentShape.svg BentShape Rebar from the rebar tools.
  3. A task panel will pop-out on the left side of the screen as shown below.
  4. Select the desired orientation.
  5. Populate the inputs like 'Left Cover', Right Cover, Top Cover, 'Bottom Cover', 'Front Cover', 'Bent Angle', 'Bent Factor', 'Rounding' and 'Diameter' of the rebar.
  6. Select the mode of distribution either 'Amount' or 'Spacing'.
  7. Pick Selected Face is used to verify or change the face for rebar distribution.
  8. Click OK or Apply to generate the rebars.
  9. Click Cancel to exit the task panel.

Taskview panel for the Arch Rebar BentShape tool


  • ДанныеOrientation: It decides the orientation of the rebar (like a bottom, top, right and left).
  • ДанныеFront Cover: The distance between rebar and selected face.
  • ДанныеLeft Cover: The distance between the left end of the rebar to the left face of the structure.
  • ДанныеRight Cover: The distance between the right end of the rebar to right face of the structure.
  • ДанныеBottom Cover: The distance between rebar from the bottom face of the structure.
  • ДанныеTop Cover: The distance between rebar from the top face of the structure.
  • ДанныеAnchor Length: It is the arm's length of bent shape rebar.
  • ДанныеBent Angle: It decides angle in bent shape rebar.
  • ДанныеAmount: The amount of rebars.
  • ДанныеSpacing: The distance between the axes of each bar.


Инструмент Arch Rebar BentShape.png Bent Shape Rebar можно использовать в macros и на консоли python с помощью следующей функции:

Rebar = makeBentShapeRebar(f_cover, b_cover, l_cover, r_cover,
                           diameter, t_cover, bentLength, bentAngle, rounding, amount_spacing_check, amount_spacing_value, orientation="Bottom",
                           structure=None, facename=None)
  • Creates a Rebar object from the given structure, which is an Arch Structure, and facename, which is a face of that structure.
    • If no structure nor facename are given, it will take the user selected face as input.
  • f_cover, b_cover, l_cover, r_cover, and t_cover are inner offset distances for the rebar elements with respect to the faces of the structure. They are respectively the front, bottom, left, right, and top offsets.
  • diameter is the diameter of the reinforcement bars inside the structure.
  • rounding is the parameter that determines the bending radius of the center reinforcement bars.
  • bentLength and bentAngle define the length of the tip of the reinforcement bars, and the bending angle from the center bars.
  • amount_spacing_check if it is True it will create as many reinforcement bars as given by amount_spacing_value; if it is False it will create reinforcement bars separated by the numerical value of amount_spacing_value.
  • amount_spacing_value specifies the number of reinforcement bars, or the value of the separation between them, depending on amount_spacing_check.
  • orientation specifies the orientation of the rebar; it can be "Bottom", "Top", "Left", or "Right".


import FreeCAD, Arch, BentShapeRebar

Structure = Arch.makeStructure(length=1000, width=1000, height=100)
Structure.ViewObject.Transparency = 80

Rebar = BentShapeRebar.makeBentShapeRebar(50, 20, 20, 20,
                                          8, 40, 100, 135, 2, True, 4, "Bottom", Structure, "Face4")
Rebar.ViewObject.ShapeColor = (0.9, 0.0, 0.0)

Rebar2 = BentShapeRebar.makeBentShapeRebar(50, 40, 20, 20,
                                           8, 20, 100, 135, 2, True, 4, "Bottom", Structure, "Face6")
Rebar2.ViewObject.ShapeColor = (0.0, 0.0, 0.9)

Edition of the rebar

You can change the properties of the rebar with the following function

editBentShapeRebar(Rebar, f_cover, b_cover, l_cover, r_cover,
                   diameter, t_cover, bentLength, bentAngle, rounding, amount_spacing_check, amount_spacing_value, orientation,
                   structure=None, facename=None)
  • Rebar is a previously created BentShapeRebar object.
  • The other parameters are the same as required by the makeBentShapeRebar() function.
  • structure and facename may be omitted so that the rebar stays in the original structure.
import BentShapeRebar

BentShapeRebar.editBentShapeRebar(Rebar, 50, 20, 20, 20,
                                  12, 20, 100, 155, 2, True, 6, "Top")

BentShapeRebar.editBentShapeRebar(Rebar2, 50, 35, 20, 20,
                                  12, 35, 100, 155, 2, True, 6, "Top")