Concrete Geometry Joins

Concrete elements will automatically join each other without your intervention. They are represented in the project as a single mass in all views as anticipated. While joined, you can edit and move the individual elements within their normal ranges and limits.

Note: If the Unjoin Geometry tool is used (see Unjoining Geometry), automatic joining is disabled for the elements. Use the Join Geometry tool (see Joining Geometry) to re-enable automatic concrete geometry joins.

Examples of joined concrete elements
3D View of 2 beams and a column join		Cross section of a column and beam join
Cross section of a structural floor and slab edge join

Concrete beams must have either of the following properties to participate in these joins, otherwise they exhibit legacy behaviors and must be manually joined.

• Rectangular sections with a cross sectional rotations of 0, 90, 180, and 270 degrees.
• Trapezoidal, t-shaped, and l-Shaped sections with cross sectional rotations of 0 degrees.

Other join related restrictions include the following.

• Shape handles are not available for new participating elements.
• Type parameter changes will not automatically update concrete join geometry.

Concrete elements that are reinforced will also share their cover references in a join. See Rebar Cover.