Structural Design
User Guide
Stairs, Ladders and Handrails : Stair Flight : Create Stair Flight
All of the STRFLT creation tasks are initiated from a central Create Stair Flight window which acts a task hub. The General Attributes window is always initially displayed, regardless of the selected SLH element or representation mode, further windows are presented (progressive disclosure) prompting for input.
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By default the Representation Mode is Layout and the General Attributes part of the Create Stair Flight window displays.
From the General Attributes part of the Create Stair Flight window, select a default standard from the drop-down list of available defaults. if there are no defaults, refer to the administrator, the default is Select.
The selected standard to which the default relates and the default tread width are automatically displayed in the General Attributes part of the Create Stair Flight window.
In the Name: field, type the name for the new STRFLT element, or select Autoname Stair Flight. The default is Unset.
The Tread Width field specifies the tread width of the STRFLT element, it is automatically populated with the default of the selected standard (if set up by the administrator). If required you can amend the tread width of the STRFLT element within the minimum and maximum defaults.
Click Next to display the Reference Points part of the Create Stair Flight window. Refer to Reference Points for further information.
The Stair Summary part of the Create Stair Flight window is populated with the tread width dimension of the STRFLT element.
To create a new STRFLT element, you must select a start (FROM Reference Point) and end (TO Reference Point), from the Reference Points part of the Create Stair Flight window. By default no reference points are selected.
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If you select the FROM Reference Point first, from the FROM Reference Point part of the Reference Points window, select Pick Edge (FFL). You are prompted to SLH Stair Flight - Pick FROM Edge. Once the edge has been selected it is labelled as FROM Edge in the 3D view.
From the TO Reference Point part of the Create Stair Flight window, select Pick Edge (FFL), you are prompted to SLH Stair Flight - Pick TO Edge. Once the edge has been selected it is labelled as TO Edge in the 3D view.
The Evaluation part of the Create Stair Flight window is populated with feedback on the reference points. When the selected reference points are acceptable, a message displays: The selected reference points successfully passed an initial check.
The Stair Summary part of the Create Stair Flight window, is populated with the Overall Rise, Going and Tread Width.
If required, you can modify the TO and FROM Reference Points explicitly, the functionality to modify either edge position is identical. For the purposes of this guide, only the FROM Reference Point is described.
To modify the FROM Reference Point position explicitly, from the FROM Reference Point part of the Create Stair window, select Modify Position to display the FROM Position window.
Modify the position of the FROM Reference Point position as required.
Click Offset to modify the position of the FROM Reference Point as an offset value measured from the original position. Click Return from offset mode to exit the offset display.
Click Apply to modify the position and close the FROM Position window, or click Dismiss to discard any changes and close the window.
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Modifying the FROM or TO Position does not reset the stair direction.
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Used when creating an edge to plane stair flight, the STRFLT element is anchored at the upper reference point and the lower reference point is located freely on the chosen elevation. You must select the upper reference point first, the functionality is identical to that when creating an edge to edge STRFLT element (the FROM or TO Reference Point). Refer to Edge to Edge for further information.
Once the elevation of the lower reference point has been selected, it is labelled as TO Plane in the 3D view and the Elevation field is populated.
If required, you can alter the direction of the STRFLT element, from the TO Reference Point part of the Create Stair Flight window, click Flip Stair Flight Direction.
From the TO Reference Point part of the Create Stair Flight window, click Pick Support Element. You are prompted to SLH Stair Flight - Pick FROM Support Element.
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You must first select the FROM reference point, the functionality is identical to that when creating an edge to edge STRFLT element. Refer to Edge to Edge for further information.
Select the Up or Down option button to define the direction of the stair flight from the point of origin.
If required you can alter the direction of the STRFLT element, the functionality is identical to that when flipping an edge to plane STRFLT element. Refer to Flip Stair Flight Direction for further information.
Click Next to display the Stair Configuration part of the Create Stair Flight window. Refer to Stair Configuration for further information.
Refer to Edge to Edge/Edge to Plane Edge Configurations for further information.
The stair geometry for Edge to Calculated Position stair flights is determined using a set of defined parameters. Refer to Edge to Calculated Position Stair Configuration for further information.
By default, the Stair Configuration part of the Create Stair Flight window is populated with all the allowable configurations allowed in the defaults.
The configurations that display in the Stair Configuration part of the Create Stair Flight window are dependent upon which defaults are set by the administrator.
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From the Stair Configuration part of the Create Stair Flight window, input the offset distance into the X Offset field then select X Offset from.
The Positioning Control window functionality allows you to pick positions in event-driven graphics mode. Refer to Positioning Control for further information.
Used for positioning the stair flight along the upper reference edge. Input the nudge increment into the Nudge field (default 100mm), click the arrows to nudge the stair flight along the X axis in the 3D view.
All of the configurations available for selection are displayed in the Stair Configuration part of the Create Stair Flight window. By default, the configuration closest to the defaults is highlighted.
All of the configurations available for selection are displayed in the Stair Configuration part of the Create Stair Flight window.
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Input a dimensional value in the field to define the elevation position of the TO Reference Point.
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Select the Lock check box to lock the specified value.
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Select the Lock check box to lock the specified value.
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Select the Lock check box to lock the specified value.
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Input a dimensional value in the field to define the individual going distance for the stair flight.
Select the Lock check box to lock the specified value.
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You can add handrails to the stair flight, from the Handrail part of the Create Stair Flight window, select from the Handrail Configuration drop-down list of available handrails.
Click Next to display the Extension and Landings part of the Create Stair Flight window. Refer to Extension and Landings for further information.
The Extension and Landings part of the Create Stair Flight window is populated with data for the new STRFLT element.
Some of the fields in the Create Stair Flight window are populated with the defaults set by the administrator and others are populated with results of calculations made by the SLH application using the defaults file.
The Extensions part of Create Stair Flight window is populated with the lower and upper extension lengths (which are within the minimum and maximum default values) for the new STRFLT element.
The Landing part of the Create Stair Flight window can be used to configure, add or remove the intermediate landing to comply with user/company standards or requirements and is dependent upon the selected configurations.
A landing may be mandatory for some configurations and there may not be room for one in others. Therefore the Landing check box is greyed out, and an explanation is displayed.
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The selected configuration must have an intermediate landing as a result if the Landing check box is selected.
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To add a landing to a stair flight, select the Landing check box.
By default, landings are positioned as close to the middle of the new stair flight element (Landing Height), the Landing Length and Thickness specified in the defaults file are displayed in the Landing Options field on of the Create Stair Flight window.
Use the dimension label from the Landing Options part of the Create Stair Flight window, to display the length or height of the landing in the 3D view.
From the Rises Above or Rises Below boxes, select the number of rises above and below the landing. If you change the number of rises above the landing the number of rises below the intermediate landing automatically adjusts within the height constraint and vice versa.
The intermediate landing automatically moves up or down depending upon the selection made in the 3D view, the Rises Above and Rises Below boxes are also automatically updated to reflect the amendment.
To create the new stair flight element, click Build Stair Flight.
