How to Connect Walls to Other Elements in Revit

How to Attach Walls to Other Elements in Revit

If you’re familiar with Revit, you know that walls are a fundamental part of building models. In this article, we’ll focus on wall connections and how to attach walls to other elements effectively.

Wall Connections

When walls intersect in Revit, a default flush connection is created. This connection cleans up the plan view by removing visible edges between the wall and its corresponding component layers, resulting in a clear display.

Consider the Wall Connection Display: Does the instance property controlling the cleaning function apply to all wall types or only to walls of the same type?

▲ Flat connection with and without cleaning function at a fine level of detail

You can modify how wall connections appear in plan views by choosing different connection options, such as Diagonal Connection or Square Connection. You can specify which wall should be flush or squared with the other walls, and decide whether the connection should be cleaned, left uncleared, or follow the default view settings.

Changing Wall Connection Configurations

You can adjust connections involving up to four walls by changing the connection type or rearranging their connection order.

Note: For editing wall connections involving more than four walls, spanning multiple floors, or across multiple worksets, refer to the section on Editing Complex Wall Connections.

1. Go to the Modify tab, then to the Geometric Shapes panel, and select Wall Connection.
2. Hover over the wall connection and click the gray square that appears.

To select multiple intersecting wall connections for editing, draw a selection box around them or hold the Ctrl key and click each connection.

On the options bar, choose one of the following connection types:

• Flat connection (default)
• Diagonal connection
• Square connection — adjusts the wall end to a 90-degree angle

If you select either Flat or Diagonal connection, you can use the Next and Previous buttons to cycle through possible connection orders. This feature is available only when editing a single wall connection.

Note: Square or diagonal connections cannot be made between the interior of one wall and another wall. Also, the order of flat connections cannot be changed because only one flat connection configuration exists. An example layout is shown below when selecting the option Do not clean up connections.

Once you have the desired configuration, click Modify to exit the tool.

Attaching Walls to Other Elements

After placing a wall, you can replace its initial top and bottom elevation settings by attaching the wall’s top or bottom to other elements located in the same vertical plane. This approach helps avoid manually adjusting wall contours when design changes occur.

Elements to which walls can be attached include floor slabs, roofs, ceilings, reference planes, or other walls directly above or below. The wall height will automatically increase or decrease as needed to align with the attached elements’ boundaries.

In the example below, the left image shows a roof placed on a wall positioned using its wall top elevation (set to Elevation 2). The middle image demonstrates the effect of attaching the wall to the roof. The right image illustrates how the wall contour adjusts accordingly when the slope of the attached roof is modified.

▲ The effect of attaching walls to roofs

Guidelines for Attaching Walls:

• You can attach the top of a wall to a non-vertical reference plane.
• The wall can be attached to an existing roof or floor slab.
• If the wall top is already attached to one reference plane, attaching it to a second reference plane will detach it from the first.
• Parallel walls in the same vertical plane—that is, directly above or below each other—can be attached.

How to Attach a Wall to Other Elements:

1. Select one or more walls in the drawing area.
2. Go to the Modify | Wall tab, then to the Modify Wall panel, and click Attach Top/Bottom.
3. On the options bar, choose whether to attach the Top or Bottom of the wall.
4. Select the elements you want the wall to attach to.

Separating Walls from Other Elements

1. Select the walls you want to detach in the drawing area.
2. Go to the Modify | Wall tab, then to the Modify Wall panel, and click Detach Top/Bottom.
3. Choose the elements you want to separate the wall from. Alternatively, if you want to detach the wall from all attached elements (or if you’re unsure which elements are attached), click Detach Everything on the options bar.

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