Research Article
Assessment of Occupational Health and Safety Risk in the Tukad Ayung Bridge Replacement Project
I Wayan Muka,
Putu Ika Wahyuni,
IB Made Yatana
Issue:
Volume 8, Issue 6, December 2023
Pages:
100-106
Received:
6 October 2023
Accepted:
6 November 2023
Published:
17 November 2023
Abstract: The replacement of the Tukad Ayung Bridge requires a study regarding Occupational Health and Safety risk assessment. Based on initial observations, in the Tukad Ayung bridge replacement project there were several causes of work accidents, such as workers not using complete personal protective equipment, heavy rain causing work to stop, activities adjacent to heavy equipment and so on. The use of heavy equipment and sophisticated machines requires expertise to use them correctly so as to reduce errors which have an impact on increasing the risk of work accidents. The existence of this bridge construction project can also cause disruption to the environment around the project. It is thought that the traffic engineering will trigger traffic jams and cause air pollution around the project location. The data used is qualitative and quantitative data with primary data sources and secondary data. The data collection techniques used were observation, interviews, questionnaires, literature study and documentation study. The data analysis technique used is Hazard Identification, Risk Assessment and Risk Control (HIRARC). The results of the research show that there are 24 types of work accident risks identified in the work of installing concrete girders in the Tukad Ayung bridge replacement project in seven stages of work, namely, the concrete girder preparation stage, making scaffolding (girder truss), erection (setting segmental girder), installing steel prestressing (strand), cable strand stressing work, concrete girder tendon grouting, and the diaphragm installation stage.
Abstract: The replacement of the Tukad Ayung Bridge requires a study regarding Occupational Health and Safety risk assessment. Based on initial observations, in the Tukad Ayung bridge replacement project there were several causes of work accidents, such as workers not using complete personal protective equipment, heavy rain causing work to stop, activities a...
Show More
Case Report
Assessment of the Causes of Pavement Failure Due to Sub-Base and Sub-Grade Materials Along Nekemte-Bedele Road
Bulcha Assefa,
Fikadu Fufa,
Mesfin Dinku
Issue:
Volume 8, Issue 6, December 2023
Pages:
107-117
Received:
15 November 2023
Accepted:
6 December 2023
Published:
18 December 2023
Abstract: The Nekemte-Bedele road section is experiencing various flexible pavement failures, and a study is needed to determine the causes. The study will involve desk research, field inspections, and laboratory tests to identify the reasons for the failures in sub-base and subgrade materials. During field observations, different types of pavement failures were noted, such as rutting, potholes, edge cracking, transversal cracking, and raveling. Representative samples were taken from the deteriorated sections to perform laboratory tests like Atterberg limit, gradation or sieve analysis, compaction, and CBR. The laboratory results showed that most of the soil materials used along the road did not meet standard specifications. The plasticity indexes and liquid limits were high for all sub-base, selected fill, and natural subgrade soil samples, except for a few. The OMC was almost between 11.90 - 27.80%, and the MDD values ranged from 1.30 kg/m³ - 1.92 kg/m³. Most of the CBR values for the selected fill soil materials met specification requirements, while those of sub-base and natural subgrade soil materials did not meet the specifications, except for a few samples. The pavement failure was due to weak/poor soil pavement layer performance in different failed locations. The field recorded high, medium, and low levels of severity.
Abstract: The Nekemte-Bedele road section is experiencing various flexible pavement failures, and a study is needed to determine the causes. The study will involve desk research, field inspections, and laboratory tests to identify the reasons for the failures in sub-base and subgrade materials. During field observations, different types of pavement failures ...
Show More
