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On BIMSpeed .str, expand Join slash Unjoin

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and choose Join slash Unjoin.

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This opens Auto Join.

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Join Advance is a different command and is not

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used in this guide.

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We will join columns and beams, reverse which category

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cuts, and then demonstrate unjoin and selection scope.

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Range chooses Active View, Selection, or Project.

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Start with Active View for this example.

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Selection limits both sides to selected elements, so select

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both the columns and beams you want processed.

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Project is broader.

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Join only if solid intersect filters new pairs by

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their solids.

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Override existing join allows existing pairs to be rebuilt.

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Verify the resulting cut order rather than assuming the

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unchecked override option freezes every existing relationship.

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The row checkbox is an operation choice.

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Checked means join.

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Unchecked means unjoin.

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It is not an enable or disable checkbox.

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Put structural columns in the first category and structural

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framings in the second.

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The first category is the cutting element.

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Here, both intersection options are checked and the range

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is Active View.

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Click Run, then inspect the joint in Revit.

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Enter a meaningful template name, such as Tutorial Columns

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Cut Beams, and click Save.

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Use the template list to reload it.

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The installed tool persists configuration when run executes.

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Recheck the row, range, and checkboxes after loading.

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Edits to a loaded template can affect its stored

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configuration.

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Remove deletes a saved template.

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It does not unjoin the model.

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Add Rule creates another operation row.

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Set its two categories and join checkbox.

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The Row Swap button reverses the category order.

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The Trash button removes that row.

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Rule order matters when the same elements appear in

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several rules, so avoid contradictory rows.

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The project radio, shown in the companion capture, illustrates

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its scope.

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The recorded model operation uses active view or selection.

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to unjoin the chosen category pair, clear the row

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checkbox and keep the intended range.

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Click Run.

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Inspect the returned edge at the beam and column

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intersection.

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Unjoin changes the geometry relationship.

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It does not delete either element.

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A saved template and a saved RVT are separate

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things.

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After joining with columns first, select the front column.

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Its displayed volume is 1 .512 cubic meters.

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This is the 600 by 600 millimeter column with

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a 4 .2 meter system length.

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We will use this same element to check the

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reverse cut order.

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Select the intended columns and beams together.

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Open Auto Join, set Range to Selection, and swap

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the row so Structural Framings is first and Structural

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Columns second.

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Keep the join checkbox checked and run.

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Only the selected matching pairs are the intended scope.

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Do not select only one category and expect it

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to reach every other element in the project.

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The same column now reports 1 .440 cubic meters.

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The beam cuts the column, reducing its volume by

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0 .072 cubic meters in this example.

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Use both the visible joint and properties to verify

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the result.

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Save the RVT.

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The practice file preserves the selected scope, beam's first

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result, while other frames can retain their earlier relationships.