| 2018 International Building Code> Chapter 10 Means of Egress> Section 1015 Guards> 1015.4 Opening limitations |
| Required guards shall not have openings that allow passage of a sphere 4 inches (102mm) in diameter from the walking surface to the required guard height. | 依規定設置的欄桿,自地面至規定欄桿高度的範圍內,不得有容許直徑10.2cm的球體穿過的開孔。 |
| Exceptions: | 例外: |
| 1. | From a height of 36 inches (914 mm) to 42 inches (1067 mm), guards shall not have openings that allow passage of a sphere 4 3/8 inches (111 mm) in diameter. | 1. | 高度91.4~106.7cm的欄桿,不得有容許直徑11.1cm的球體穿過的開孔。 |
| 2. | The triangular openings at the open sides of a stair, formed by the riser, tread and bottom rail shall not allow passage of a sphere 6 inches (152 mm) in diameter. | 2. | 樓梯側邊由級高、級深、底部欄桿圍成的三角形開孔,不得有容許直徑15.2cm的球體穿過的開孔。 |
| 3. | At elevated walking surfaces for access to and use of electrical, mechanical or plumbing systems or equipment, guards shall not have openings that allow passage of a sphere 21 inches (533 mm) in diameter. | 3. | 通達或位於機電設備高架平台的欄桿,不得有容許直徑53.3cm的球體穿過的開孔。 |
| 4. | In areas that are not open to the public within occupancies in Group 1-3, F, H or S, and for alternating tread devices and ships ladders, guards shall not have openings that allow passage of a sphere 21 inches (533 mm) in diameter. | 4. | 在使用類組1~3、F、H、或S的非公開區域、及錯步樓梯和船梯,其欄桿不得有容許直徑53.3cm的球體穿過的開孔。 |
| 5. | In assembly seating areas, guards required at the end of aisles in accordance with Section 1029.17.4 shall not have openings that allow passage of a sphere 4 inches (102 mm) in diameter up to a height of 26 inches (660 mm). From a height of 26 inches (660 mm) to 42 inches (1067 mm) above the adjacent walking surfaces, guards shall not have openings that allow passage of a sphere 8 inches (203 mm) in diameter. | 5. | 在組合式觀眾座席,依1029.17.4應在走道底端設置欄桿,在高度66cm以下的範圍不得有容許直徑10.2cm的球體穿過的開孔。在高度66至106.7cm的範圍,不得有容許直徑20.3cm的球體穿過的開孔。 |
| 6. | Within individual dwelling units and sleeping units in Group R-2 and R-3 occupancies, guards on the open sides of stairs shall not have openings that allow passage of a sphere 43/8 (111 mm) inches in diameter. | 6. | 在R-2及R-3類組的個別住宅單元或住宿單元內,樓梯開放側的欄杆不得有容許直徑11.1cm的球體穿過的開孔。 |