Attaching elements like walls to other building components in Revit helps maintain design intent and ensures proper relationships, such as keeping a wall's base aligned with a floor or foundation. While the term "top base" isn't a standard Revit command, you typically attach either the top or the base of a wall (or other elements) using the Attach Top/Base tool.
Based on the provided reference, which demonstrates initiating the process by selecting "Attach Base," here's how you generally use this function in Revit:
Understanding Attach Top/Base
Revit provides the Attach Top/Base tool to connect the top or base of walls, columns, or other elements to levels, roofs, floors, structural framing, or other model elements. This action creates a constraint, so if the element you attach to moves, the attached element will adjust accordingly.
The reference specifically illustrates the beginning steps for attaching the base of a wall.
Steps to Attach a Wall's Base (as shown in reference)
To attach the base of a wall to another element, follow these general steps:
- Select the Wall: Click on the wall (or walls) you want to attach.
- As shown in the reference: "So what I'm going to do is I'm going to click on one of those walls."
- Access the Attach Tool: With the wall selected, go to the Modify | Walls contextual tab. In the Modify panel, click the Attach Top/Base button.
- As shown in the reference: "I'm going to click on attach."
- Choose Attach Base: From the options that appear (usually "Attach Top" and "Attach Base"), select Base.
- As shown in the reference: "Base."
- Select the Target Element: Revit will then prompt you to select the element you want to attach the wall's base to (e.g., a floor, foundation wall, or structural foundation).
- Note from reference: "And you notice Revit gives you some instructions here down in the lower left hand corner." Revit provides dynamic instructions in the status bar to guide you through the process of selecting the target element.
- Complete the Action: Click on the desired target element in your model. The base of the selected wall(s) will then attach to that element.
Example Scenario: Attaching a Wall to a Floor
Imagine you have exterior walls and a ground floor slab. You would select the exterior walls, use the "Attach Top/Base" tool, select "Base," and then click on the floor slab. This ensures the walls sit precisely on top of the slab, even if the slab's elevation changes.
Using Attach Top
While the reference focuses on "Attach Base," the same Attach Top/Base tool is used to attach the top of a wall. After clicking the tool, you would select "Attach Top" instead of "Attach Base" and then select the target element, such as a roof, floor (for the level above), or beam.
Key Takeaways
- The tool in Revit is called Attach Top/Base.
- You can choose to attach either the top or the base of selected elements.
- The provided reference specifically demonstrates the beginning of the Attach Base process.
- Revit provides on-screen instructions during the attachment process to help you.
| Command Function | Purpose | Accessed Via |
|---|---|---|
| Attach Top | Connects the top of an element to a target. | Attach Top/Base tool |
| Attach Base | Connects the base of an element to a target. | Attach Top/Base tool |
By using the Attach Top/Base tool, you create intelligent connections between elements, making your Revit model more robust and easier to manage through design changes.
