Tuesday, May 13, 2014

Selecting Curtain Wall Components

Revit has specialized tools for selecting curtain wall-specific components based on the grid lines they are hosted by, their orientation, family, or the curtain wall host and this post explores those tools and explains how they are used.

Curtain walls, in Revit, are comprised of mullion, panel and gridline components.  These components can be selected individually by hovering the cursor over one or more objects, tapping the Tab key until the correct object highlights, then clicking the left mouse button.  Click here for a post on selecting specific curtain wall objects and some issues that may arrive.

 Like all objects in Revit, you can select the other object in the same family by right-clicking the mouse and choosing Select All Instances > Visible In View or Select All Instances > In Entire Project depending in the extent or requirements of the selection.  This can be used to change all mullions or panels from one family to another.

 To select all mullions, regardless of family, along a gridline, select one mullion on that gridline, right-click, then choose Select Mullions > On Gridline.  Your cursor must not be hovering over another object when you right-click or the context-specific menu will not show the Select Mullions option.

 All the mullions on the same gridline as the original are now selected.  You can use Select Mullions > On Gridline for both vertical and horizontal mullions

 This selection method also works when gridline segments are deleted by selecting the mullions on both sides of the missing span.

 Similarly, with a mullion selected, you can right-click and choose Select Mullions > Across Gridline to select all mullions that are parallel to the selected mullion and run between the same perpendicular gridlines.

 The other Select Mullions menu options include:

On Vertical Grid – Selects all vertical mullions on the current curtain wall.
On Horizontal Grid - Selects all horizontal mullions on the current curtain wall.
Inner Mullions – Selects all mullions that are not along the perimeter of the
                            current curtain wall (jambs, sills, heads).
Border Mullions - Selects all mullions that are along the perimeter of the
                              current curtain wall (jambs, sills, heads).
Mullions on Host - Selects all mullions in the current curtain wall.

Using any of the five methods listed above will deselect selected mullions if appropriate.

There are similar tools available for selecting curtain wall panels; however, they are slightly more restrictive.

After selecting a curtain wall panel, right-click (being sure not to hover the cursor over another object) and choose Select Panels > On Vertical Grid.  All vertical panels that are the same size as the original and run along the same vertical grid line are selected.  Revit will omit any panels that are not the same size.

Select a curtain wall panel, right-click and choose Select Panels > On Horizontal Grid.  All horizontal panels that run along the same horizontal grid line, even if they are of a different size, are selected. 

As expected, Select Panels > Panels On Host selects all the panels on the current curtain wall.

As you can see, there are several tools available to help you select Revit curtain wall components by family, vertical gridline, horizontal gridline, orientation or curtain wall.  I’m just waiting for the Select All Mullions Using The Old Die Designs And Replace Them With Mullions Using The New Designs button.  Now that would be helpful!

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