These settings are available if you chose a Beam Structure type for the Flight.
Beam Structures are GDL elements: choose a component from the pop-up to serve as the Beam support.
Components include a general Beam; profiled Beam; and Open Stringer (see below).
For details, see Custom Sub-Elements for Stairs and Railings.
An “Open Stringer” structure is available from the Beam – Flight component pop-up list.
In Beam Flight Settings, choose a Beam Structure shape: either straight or stepped. Profile components are also available.
Below, enter a value for the Beam thickness. Note the feedback in the Preview window.
Beam Flight Structures: Straight, Stepped, Profiled
Use this panel with its tab pages to set the Beam component’s settings.
The Anchor Point is at the top of the beam: choose Top Left, Top Middle or Top Right.
Important: For a profiled Beam, the default Anchor is the Profile Origin. For correct connections, make sure the Profile Origin is defined at the top of the profile! Alternatively, set the Anchor Point to one of the “Top” options in the pop-up.
See also Profiled Stringer: Special Options.
For Profile definition, see Profile Origin in Profile Editor Window.
Use this control (Style and Dimensions page of Beam Component Settings) to add multiple Beams (up to 10) to serve as the Stair’s support structures on all flights.
◦Number of Beams must be set (on separate Settings pages) for both Flight and Landing.
◦In Edit mode, you can customize the number of beams per Flight or per Landing, as needed.
Beam Attributes and Representation
Depending on the Beam component, set its Building Material and/or choose a Profile. Adjust its values as needed.
◦Beam attributes must be set separately for Flight and Landing.
See also Add Tread Plates at Beam Landing.
Tread Plate Follows Tread Polygon
End Plates at Top and Bottom
For a Beam Flight Structure, you can add additional components to support the Treads.
Go to the Secondary Support tab page, and enable the Secondary Support checkbox.
From the pop-up, choose and set the desired component.
You can control the number of supports at either end of the beam, using the Add or Remove pop-ups:
Beam Flight Support, with Secondary Supports