Join Dimensions¶

Join Dimensions combines two or more compatible dimension strings into one continuous dimension.

You first select a primary dimension, followed by the other dimensions you want to join. Flow collects their references, removes duplicates, orders the references along the primary dimension direction and recreates them as a single dimension string.

The primary dimension determines the position and dimension type used for the replacement dimension.

Where possible, Below text applied to the original dimensions is preserved and transferred to the recreated dimension.

Ribbon: Flow → Annotation → Join Dimensions

When to Use Join Dimensions¶

Use Join Dimensions when separate dimension strings would be clearer or easier to manage as one continuous dimension.

This can be useful when:

• dimensions have been created separately during documentation
• adjacent dimension strings need to be combined
• dimension strings are staggered or separated but describe the same direction
• dimension strings containing Below labels created through Dimension Labels need to be combined

The dimensions do not need to sit on exactly the same dimension line, but they must be compatible and run in the same direction.

Before You Start¶

Join Dimensions can be used in:

• Floor Plans
• Reflected Ceiling Plans

The dimensions being joined must:

• be linear dimensions
• belong to the active view
• run parallel to the primary dimension
• contain valid references that can be used to recreate the dimension

Opening the Tool¶

Open:

Flow → Annotation → Join Dimensions

Flow begins the interactive selection workflow.

Joining Dimensions¶

1. Select the Primary Dimension¶

Flow first prompts you to select the primary dimension.

Select the dimension whose position and dimension type you want the completed dimension to use.

If the selected element is not a dimension, Flow displays a message and asks you to select the primary dimension again.

2. Select the Other Dimensions¶

Flow then prompts you to select the other dimensions to join.

Select one or more additional compatible dimensions and complete the Revit selection.

The dimensions can be separated or staggered, but they must run parallel to the primary dimension.

3. Flow Creates the Joined Dimension¶

Flow validates the selected dimensions and collects the references required to recreate them.

Flow then:

1. Orders the references along the direction of the primary dimension.
2. Removes duplicate or unusable references.
3. Creates a new continuous dimension on the primary dimension line.
4. Uses the dimension type of the primary dimension.
5. Reapplies supported Below text where possible.
6. Deletes the original dimensions only after the replacement dimension has been created successfully.

After a successful join, Flow immediately returns to the selection workflow so you can join another group of dimensions.

Choosing the Primary Dimension¶

The primary dimension provides the basis for the new dimension string.

Its dimension line determines where the replacement dimension is created, and its dimension type is applied to the result.

This means the order in which the dimensions are selected matters.

Expected Result¶

The original compatible dimension strings are replaced by one continuous dimension positioned on the primary dimension line.

References from the selected dimensions are combined and ordered to create the new dimension string.

Supported Below text is reapplied where possible.

What Flow Preserves¶

Flow preserves the valid dimension references needed to recreate the combined string.

Below text associated with the original dimension or its segments is recorded before the dimensions are recreated. Flow then reapplies those labels to the resulting dimension or segments where possible.

This is particularly useful with labels created through Dimension Labels.

Staggered or Separated Dimension Strings¶

The dimensions being joined do not need to be positioned on exactly the same dimension line.

As long as they are compatible and run parallel to the primary dimension, Flow can collect their references and order them along the primary dimension direction.

The resulting continuous dimension is placed on the dimension line of the primary dimension.

Duplicate and Zero-Length Segments¶

Joining separate dimensions can sometimes introduce duplicate or redundant references.

Flow removes duplicate references before creating the replacement dimension.

If the recreated dimension still contains a zero-length segment, Flow removes the redundant reference responsible for that segment and retries the dimension creation. This process continues until a valid dimension can be created or there are not enough usable references remaining.

If the Dimensions Cannot Be Joined¶

Flow validates the selected dimensions before replacing them.

A join may be rejected if:

• fewer than two different dimensions are selected
• a dimension does not belong to the active view
• a selected dimension is not linear
• the dimensions do not run parallel to the primary dimension
• a dimension does not contain enough valid references
• the active view is not a Floor Plan or Reflected Ceiling Plan
• the collected references cannot produce a valid replacement dimension

If Flow cannot complete the join, it displays a message explaining the problem and leaves the existing dimensions in place.

Correct the issue and select the dimensions again.

Repeating and Finishing¶

After successfully joining a group of dimensions, Flow is ready for another group.

Select another primary dimension and repeat the process as required.

Press Esc during the selection workflow when you have finished.

Cancelling the selection ends Join Dimensions cleanly without being treated as an error.

Related Help¶

• Annotation
• Dimension Labels
• Wall Dimensions
• Grid Dimensions
• Annotation Troubleshooting