Create a Stair between Specified Floors

This option allows the user to create a top flight stair configuration by picking p-points on two existing floorplates between which the stairs are to run. All positioning and dimensioning data for the new stairs is derived implicitly from the points on the finished floor levels (FFLs) which the user picks.

1. Make sure that both platforms that will be used to define the stairs are shown in the 3D view.

2. Select Create > Stair > Top Flight > FFL to FFL.

3. If required, give the new stairs a Name.

4. Check that the default settings for Stringer Depth, Stringer Thickness, Width Between Stringers, Landing Floor Thickness and Posts are suitable. Change them if necessary.

5. Click OK.

   The user is prompted to Identify P-Point on first floorplate.

6. Using the cursor, pick a p-point on the platform which will determine the bottom of the stair.

   Hint: The easiest way to do this is to position the cursor anywhere on the required floorplate and hold down the left-hand mouse button as the cursor is moved. The p-points will be shown as blobs and the cursor shape will change from . to when it is over a p-point.

   Once the user has successfully picked a p-point on the first floorplate, a second prompt Identify P-Point on second floorplate.

7. Use the same technique as earlier, pick a p-point on the platform which will determine the top of the stair.

   The stair is created, complete with appropriate handrails, between the finished floor levels at the p-point locations.

   Note: The maximum size of any stair is limited to 16 flights (or treads) or to a height of 2.3 m. If the new stair exceeds either of these limits, a message is displayed informing the user that an intermediate platform is required. If so, create such a platform (as explained in Create Access Platforms and Walkways) and then create two stairs linked via the platform.