Factors Affecting Improved Project Performance Using Lean Six Sigma Methods and Time Cost Trade Off for the Ammunition Warehouse Project of Indonesia
DOI:
https://doi.org/10.31695/IJERAT.2021.3698Keywords:
Warehouse Ammunition, , Lean Six Sigma, Time Cost Trade OffAbstract
Warehouse development in Indonesia has increased in 2013, data from the Ministry of Trade, in 2013 the number of warehouses in Indonesia is estimated to reach 9,300 units, up 18% from 2012, but the cost of building warehouses in Indonesia is relatively higher compared to some other countries. . A warehouse is a special, fixed facility designed to achieve the target service level with the lowest total cost. Warehouses are needed in the process of coordinating the distribution of goods, which arises as a result of an unbalanced supply and demand process. The lack of balance between the demand and supply processes encourages the emergence of inventory (inventory), inventory requires space as a temporary storage area known as a warehouse [1]. The main function of a warehouse is as a storage area for raw materials, intermediate goods, and a place for storing final goods. In the implementation of a construction project, the quality of work execution and the timing of the work are indicators of the success of a construction project. One of the aspects of quality and time is analyzed using the Lean Six Sigma method and Time Cost Trade Off. The purpose of this study is to analyze the factors that influence the improvement of the project performance based on Lean Six Sigma and Time Cost Trade Off in the ammunition warehouse project. The tool used to obtain 10 influencing factors is using SPSS (Statistical Package for the Social Sciens). The results of the study of 10 influencing factors are 1. Inadequate planning and scheduling, 2. Job-plan execution, 3. Delay in drawing preparation and approval, 4. Cost reduction, 5. Relationship between management and labor, 6. relationships within the design team, 7. Lack of skilled manpower, 8. Flexibility, 9. Errors during construction, 10. Inaccurate prediction of craftsmen production levels. Therefore it is obtained, the optimization of time performance and quality of work on this ammunition warehouse project.
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