Curved component

Tool(s): Wall + Downstand Beam, Upstand Beam + Upstand + Strip Foundation

You can use Curved Component to draw curved components (walls). The circle is approximated by a polyline: as a result, Allplan creates short, straight segments of linear components, which you can address as a single entity. You can set the number of segments in a curved component.

Note: Quantities are calculated based on the segments.

Schematic overview of curved and polygonal walls

To create a curved component

• A tool for creating linear components is active (e.g. Wall or Strip Foundation). You have already defined the component’s parameters.

1. Use the Division parameter on the context toolbar to define the number of segments in a curved wall; this number is based on a full circle.
2. Click the start point of the curved component.
   

   • Click the point.
   • Align to points using the linear snap function and click the point.
   • Define the point by making entries in the dialog line.

   Tip: To find out how to enter points in Allplan, see Precision Drawing.

   Tip: The shortcut menu and dialog line provide tools and options to assist you in the process of entering points. For more information, see Tools and Options.

3. Click the end point of the curved component.

   The secant is displayed.

4. Click in the workspace to define the direction in which the arc is to extend – relative to the component line (secant).

   

   (1) Direction in which the arc is to extend – relative to the secant
   (2) Connecting point = end point of linear component
   (3) Center point
   (4) Connecting point = start point of linear component

   The position of the component axis and its direction of extension are displayed in the preview. In the case of components with multiple construction layers (e.g. walls), you can see the component setup and the thickness of the various layers. The position of the fist layer is identified by the number 1, which is displayed in the color associated with the component axis.

5. Now check the preview to see whether the component’s offset direction is correct, and if necessary, click Reverse offset direction on the context toolbar to change its offset direction.

   You can change this setting at any time while entering components.

6. By default, the system proposes the last radius used. If this value is less than ½ a, the system automatically proposes ½ a. As an aid to orientation, the program displays a perpendicular bisector which extends to the base line so that you can define the curve of the arc in terms of a center point (without having to enter numerical values).

   

   (1) Center of circle
   (2) Perpendicular bisector

7. Define the radius in one of the following ways:
   • Accept the proposed value displayed in the dialog line
   • Enter a new value in the dialog line
   • Click in the workspace.
     An imaginary perpendicular is dropped to the perpendicular bisector. The point obtained serves as the center of the circle. The value of the radius is displayed in the dialog line.

     

     (1) Proposed center of circle
     (2) New center of circle
     (3) Crosshairs

8. Press ENTER to confirm the value in the dialog line.

   The curved component is drawn.

Note: When you use Stretch Entities to modify curved components (at wall junctions, for example) while the component axis is hidden, the modifications you make do not affect the axis. This can cause numerical inaccuracies when you dimension the curved component. When you use Stretch Entities while the component axis is switched on, curved components behave like circles; i.e. the component is moved.