Issue Description
You have started to encounter a common issue when trying to create a zone; the Creating Zone - No Closed Polygon Found error.
Solution
The No Closed Polygon Found error typically arises when Archicad cannot detect a fully enclosed boundary for the zone. This can be due to several reasons:
- Gaps or Overlaps in the Boundary: There might be small gaps or overlaps between the lines or elements defining the boundary.
- Incorrect Element Connections: Walls, slabs, or other elements might not be properly connected, leading to an open boundary.
- Layer Visibility Issues: Elements required to form the boundary might be on hidden layers, turned off or of a different renovation status.
Steps to Resolve the Error
1. Check for Gaps or Overlaps
- Zoom In and Inspect: Carefully zoom in on the boundary to look for small gaps or overlaps between the lines or elements. Even a tiny gap can prevent Archicad from recognizing a closed polygon.
2. Verify Element Connections
- Check Wall Connections: Ensure that walls or other boundary elements are correctly joined. Use the Trim/Extend tool to adjust and connect walls precisely.
- Review Connection Settings: Sometimes, settings like wall priorities or intersection overrides can affect how elements connect. Check these settings to ensure they support creating a closed boundary.
3. Adjust Layer Visibility
- Toggle Layer Visibility: Turn on all layers to ensure no boundary elements are hidden. You can use the Layer Settings dialog to quickly toggle layers on and off.
- Layer Intersection Group: Ensure that all elements involved in forming the boundary belong to the same Layer Intersection Group, as this can affect how they interact and connect.