The Mullion option in FRAMECAD Steelwise allows you to divide a single opening into multiple stacked or offset openings within the same wall panel. It is commonly used to create door-over-window, window-over-window and staggered opening configurations.
When creating stacked openings in Steelwise, it is best practice to create one large opening and use the Mullion option to divide it into separate openings. This approach simplifies modelling and helps ensure accurate framing.
Create a User Door or User Window sized to cover the total height of the required openings and the width of the largest opening.
Use the List Entity command and open the Opening Editor.
Under Construction Method, enter the required settings:
Mullion Top Location - Sets the mullion position and the sill height of the upper opening.
Mullion Depth - Defines the depth of the mullion.
Mullion Webs - Select:
No for standard vertical studs
Yes for a truss web configuration
Generate the panel in CAD to create the stacked opening arrangement.
The Mullion option can be used for:
Door-over-window configurations
Window-over-window configurations
Offset or staggered openings
Openings with different widths
For staggered openings, create a larger opening and use infill framing to achieve the desired lower opening width.
The Mullion option is an efficient way to create stacked and offset openings in FRAMECAD Steelwise. By creating one large opening and dividing it with a mullion, you can simplify detailing while maintaining accurate framing.
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Use the Mullion option whenever you need multiple openings stacked within the same panel.
It determines the position of the mullion and the sill height of the upper opening.
No creates standard vertical studs, while Yes creates a truss web configuration.
Yes. The Mullion option can be combined with infill framing to create staggered or offset openings.