Extension and Landings

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.

Note:
The functionality available is dependent upon the configuration selected.

Extensions

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.

These are calculated to provide the optimum extension values and can be any value between the minimum and maximum defaults. In the case of the selected configuration, the upper and lower extensions have been calculated as the same size. Other selected configurations result in different sized or number of extensions.

The length of either the lower or upper extension can be displayed in the 3D view.

Stringer Options

Only available in Detail. Refer to Detail Mode for further information.

Landing Options

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.

Note:
The selected configuration must have an intermediate landing as a result if the Landing check box is selected.

For the selected configuration, a landing can be added or removed without changing the stair flight geometry.

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.

The Landing Length and Thickness can be modified as long as the new length, thickness or height is between the minimum and maximum defaults.

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.

By default, intermediate landings are positioned as close to the middle of the new STRFLT element as possible, if required, you can use one of two methods to move the landing up or down.

• Rises Above/Below

• Pick Tread