To ensure that the building model maintains relationships among elements, apply constraints. For example, you can specify that a door maintains a certain distance from a wall, that all windows remain equally spaced on a wall, or that 2 collinear walls should stay aligned with each other.
| Apply constraints based on dimensions. |
Place a dimension, and lock it in place to apply a constraint. |
| Apply constraints based on alignment. | Align elements (such as a wall with a reference line), and lock the alignment to create a constraint. |
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