| 留言內容：url], produced on an individual project, comply with established standards and requirements. Thus, the standards regulate the width of staircases, which should not be less than 90 cm or more than 120 cm for marches that create vertical connections between the floors of residential buildings. This size takes into account not only the passage of residents to the upper floors, but also the passage of furniture |
| 留言時間： 2019-03-15 13:42:06 |
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