There are 7 different stair types:
Standard | the default stair type |
Solid | stair with a solid base - works best for single stairs |
Double | stair with a double base under the treads |
Double (outer) | stair with a double base next to the treads |
Double (outer ramp) | stair with a double ramp base next to the treads |
Helix (stand alone) | a spiral stair (only suited for multi - stair use) |
Treads only | stair without base |