| 摘要 |
The apartment block involved has at least two floors of apartments, and a stair well with half steps and rest levels. To install the lift shaft (20), the half steps and rest levels are removed, and on each apartment level a walk way (23) is built extending from the doors of the apartments (3-5) and the lift shaft . - Inside the stair well, a new entry stairs (27) is built between the walk ways . |
