Use this procedure to change the alignment and the alignment offset of a U-shaped stair. These fields are available only when you select a U-shaped stair.
| If you want to… | Then… | 
|---|---|
| place the treads and risers where necessary to complete the stair | select Free for Alignment type. | 
| align the tread of the up flight to the tread of the down flight | select Tread to Tread for Alignment type. | 
| align the tread of the up flight to the riser of the down flight | select Tread to Riser for Alignment type. | 
| align the riser of the up flight to the riser of the down flight | select Riser to Riser for Alignment type. | 
When you select Tread to Tread, Tread to Riser, or Riser to Riser, you can specify an offset value. A positive offset value means that the down flight tread location is closer to the landing than the up flight tread location.

Specifying tread to riser alignment offsets