 |
| |||
| half landing (Two individual quarter landings or a single half landing turns the staircase through 180 degrees. A single quarter landing turns a staircase 90 degrees. Farrukh2012) | |||
| междуэтажная площадка: 2 phrases in 1 subject |
| Construction | 2 |
|
| |||
| half landing (Two individual quarter landings or a single half landing turns the staircase through 180 degrees. A single quarter landing turns a staircase 90 degrees. Farrukh2012) | |||
| междуэтажная площадка: 2 phrases in 1 subject |
| Construction | 2 |