Development of a Korean Safety Ladder With Ensured Overturning Stability
Background: We have developed the Korean safety ladder as part of development of new safety technologies that can be accepted in industrial sites and would like to introduce the testing process to secure safety. Methods: The test load and horizontal force prescribed by ANSI A14.7 and EN131-7 standar...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Safety and Health at Work |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2093791124000842 |
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| author | Giyeol Lee Jeongjae Park Ilnam Lee Jongmoon Hwang |
| author_facet | Giyeol Lee Jeongjae Park Ilnam Lee Jongmoon Hwang |
| author_sort | Giyeol Lee |
| collection | DOAJ |
| description | Background: We have developed the Korean safety ladder as part of development of new safety technologies that can be accepted in industrial sites and would like to introduce the testing process to secure safety. Methods: The test load and horizontal force prescribed by ANSI A14.7 and EN131-7 standards for only the overturning stability test were applied to calculate the weight required for securing overturning stability according to standards and installation of outrigger with the variables of the height of platform, the angle of inclination of the worker, and the size of the platform. Results: The weight of a Korean safety ladder required for securing overturning stability according to the height is as follows: as mentioned by the ANSI A14.7, it is stable regardless of the weight when an outrigger. By the EN131-7 standard, a 5-step ladder is stable regardless of the weight, but 54 kg or more of weight is required for an 8-step ladder when an outrigger is installed. When there is no outrigger, 122 kg and 251 kg are required for 5-step and 8-step ladders, respectively. Conclusion: It is necessary to restrict inclined working on the platform at less than 66° of inclination angle by the EN131-7 standards and secure 43 kg or more of weight in the minimum width of a platform of 400 mm or expand the ladder width or open length of the outrigger. |
| format | Article |
| id | doaj-art-d8b546a932fd4a93a0804f0416b23612 |
| institution | OA Journals |
| issn | 2093-7911 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Safety and Health at Work |
| spelling | doaj-art-d8b546a932fd4a93a0804f0416b236122025-08-20T02:04:33ZengElsevierSafety and Health at Work2093-79112025-03-01161535910.1016/j.shaw.2024.11.005Development of a Korean Safety Ladder With Ensured Overturning StabilityGiyeol Lee0Jeongjae Park1Ilnam Lee2Jongmoon Hwang3Department of Landscape Architecture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of KoreaOccupational Safety and Health Research Institute, Republic of Korea Occupational Safety and Health Agency, Ulsan, Republic of KoreaGyeonggi Regional Office, Republic of Korea Occupational Safety and Health Agency, Gyeonggi, Republic of KoreaOccupational Safety and Health Research Institute, Republic of Korea Occupational Safety and Health Agency, Ulsan, Republic of Korea; Corresponding author. Research Fellow, Occupational Safety and Health Research Institute, Republic of Korea Occupational Safety and Health Agency, 400 Jongga-ro, Jung-gu, Ulsan, 44429, Republic of Korea.Background: We have developed the Korean safety ladder as part of development of new safety technologies that can be accepted in industrial sites and would like to introduce the testing process to secure safety. Methods: The test load and horizontal force prescribed by ANSI A14.7 and EN131-7 standards for only the overturning stability test were applied to calculate the weight required for securing overturning stability according to standards and installation of outrigger with the variables of the height of platform, the angle of inclination of the worker, and the size of the platform. Results: The weight of a Korean safety ladder required for securing overturning stability according to the height is as follows: as mentioned by the ANSI A14.7, it is stable regardless of the weight when an outrigger. By the EN131-7 standard, a 5-step ladder is stable regardless of the weight, but 54 kg or more of weight is required for an 8-step ladder when an outrigger is installed. When there is no outrigger, 122 kg and 251 kg are required for 5-step and 8-step ladders, respectively. Conclusion: It is necessary to restrict inclined working on the platform at less than 66° of inclination angle by the EN131-7 standards and secure 43 kg or more of weight in the minimum width of a platform of 400 mm or expand the ladder width or open length of the outrigger.http://www.sciencedirect.com/science/article/pii/S2093791124000842K-ladderOutriggerOverturningPortable ladderStability |
| spellingShingle | Giyeol Lee Jeongjae Park Ilnam Lee Jongmoon Hwang Development of a Korean Safety Ladder With Ensured Overturning Stability Safety and Health at Work K-ladder Outrigger Overturning Portable ladder Stability |
| title | Development of a Korean Safety Ladder With Ensured Overturning Stability |
| title_full | Development of a Korean Safety Ladder With Ensured Overturning Stability |
| title_fullStr | Development of a Korean Safety Ladder With Ensured Overturning Stability |
| title_full_unstemmed | Development of a Korean Safety Ladder With Ensured Overturning Stability |
| title_short | Development of a Korean Safety Ladder With Ensured Overturning Stability |
| title_sort | development of a korean safety ladder with ensured overturning stability |
| topic | K-ladder Outrigger Overturning Portable ladder Stability |
| url | http://www.sciencedirect.com/science/article/pii/S2093791124000842 |
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