The Height of the Flight

The user must define the top and bottom levels of the flight of stairs:

There are a number of ways to select the top and bottom levels of the flight:

• Enter the absolute top level (wrt World) in the Top Level field. If the height is locked or the value is less than the bottom level, the bottom level adapts. If the height is not locked, the height adapts.

• Select the top level using a position in the graphical view and click Pick Top Level. The view's mode changes and the Positioning Control window is displayed. Follow the prompt to Pick Top Level (Snap) Snap:. If the height is locked or the value is less than the bottom level, the bottom level adapts. If the height is not locked, the height adapts.

• Enter the height in the Height field. If the height is locked, click Padlock to unlock it.

• Measure the height. Click Measure Height and the Positioning Control window is displayed. The user is prompted to Height:Pick Start (Snap) Snap: and Height:Pick End (Snap) Snap:. The bottom level or top level adapts as appropriate.

• Enter the absolute bottom level (wrt World) in the Bottom Level field. If the height is locked or the value is greater than the top level, the top level adapts. If the height is not locked, the height adapts.

• Select the bottom level using a position in the graphical view and click Pick Bottom Level. The view's mode changes and the Positioning Control window is displayed. Follow the prompt to Pick Bottom Level (Snap) Snap:. If the height is locked or the value is less than the top level, the top level adapts. If the height is not locked, the height adapts.

If the user does not want the height to adapt to level changes, click Padlock to lock it.

The height of the flight is used to calculate the number of steps, the riser and the going in the following way:

Number of steps = INT (Height / Optimum riser)

Riser = Height / Number of steps

Going = Average stride - 2 * Riser

The optimum riser is defined by the application assistant in a configuration file (for example: 180 according to CRT).

The average stride is also defined in the configuration file (for example: 630 according to CRT).

If the maximum number of steps (also defined in the configuration file) is exceeded a warning message is shown.