CHANGES IN THE INSTALLATION METHOD FOR SEGMENTAL ON-SITE STEEL STRUCTURES (ERECTION) TO LIFTING CENTER SPANS ON YOUTEFA BRIDGE (HOLTEKAMP)

Abstract

This study aimed to determine the appropriate method for the implementation of structural steelwork at the Youtefa Bridge Construction in terms of execution time, work risk, and quality of work. This type of research was field research with a qualitative descriptive method, located on the Youtefa Bridge over Youtefa Bay which connects Jayapura City, Hamadi Village, and Muara Tami District, Papua Island. Data collection conducted by collecting supported data related to the implementation of the Youtefa Bridge, then analyzed on the implementation time, work risks, and the right quality of work to be applied in the Youtefa Bridge Construction. This study showed that the on-site method had not been fully implemented in the field. This is due to the high risk of construction, the assembly duration which takes at least two years, and the threat to the mangrove ecosystem around Youtefa Bay. Based on the method analysis, known that the right method for the Youtefa Bridge work is using the Lifting method. The Lifting method will ensure the safety of the work because the welding process is not carried out at a height. The quality of the steel frame installation is higher because all welding operations are performed in a factory whose quality is more tested when compared to the results of welding in the field, and the work execution time is shortened by 6 months and is faster than when performed on site.