1, Straight thread stairs
2, Straight thread stairs with landing
3, Thread stairs with turning landing
4, Straight stairs with turning at the end
5, straight box stairs
6, Simple box stairs
7, Surrounded box stairs
8, Floating stairs
1, Straight thread stairs
2, Straight thread stairs with landing
3, Thread stairs with turning landing
4, Straight stairs with turning at the end
5, straight box stairs
6, Simple box stairs
7, Surrounded box stairs
8, Floating stairs