Jurnal Transportasi: Sistem, Material, dan Infrastruktur

Feasibility Analysis of Yogyakarta-Bawen Tollway from Economic and Financial Aspect

2023-07-10T05:24:19+00:00

Tollway is public roads that are part of the road network system and as national roads whose users are required to pay tolls. The implementation of tollway aims to increase the efficiency of distribution services in order to support increasing economic growth, especially in areas that have a high level of development. Central Java is an area that has high potential of tourism. One of those is Borobudur Temple. To increase this potential, a good road network is needed, one of which is the construction of the Yogyakarta-Bawen Tollway. The construction of the Yogyakarta-Bawen Tollway is expected to have great benefits, especially the connectivity of the Trans Java tollway which is supported by the Government. The project feasibility study is aimed to assess the carried-out project. The meaning of the assessment here is providing a recommendation whether the project is feasible to be carried out or should be postponed. In carrying out this feasibility study, various aspects will be involved to decide the feasibility of a project. The economic and financial aspects are aspects that need to be considered in the implementation of a project feasibility study. By carrying out this study, the amount of savings from VOC (Vehicle Operating Costs) and the time value when this tollway is operated, so that later on, it will be known, whether the construction of this tollway is feasible from the economic and financial perspective. The analysis results of the economic feasibility showed that the BCR value was 4.102 (BCR>1), the NPV was Rp8.824.453.255.243 (NPV> 0), while in the financial feasibility analysis showed the BCR value was 2.767 (BCR>1), NPV was Rp45.719.816.667.039, IRR of 11.24% (IRR>Interest rates), and Payback Period in the 18th year, 10th month, 21st day after the tollway is operated. Based on this analysis, it can be concluded that the Yogyakarta-Bawen Tollway is feasible from an economic and financial aspect.

Geometric and Pavement Design of Probolingg – Banyuwangi Toll Road Section 1 (Probolinggo – Besuki)

2023-07-10T05:27:46+00:00

A toll road is a project the government considers as a solution that can decrease congestion so it can become a source of income for the state treasury. One of the Mega Projects of Toll Road currently being worked on is the Trans Java Toll Road Project. One of the toll roads that are part of the Trans Java Toll Road Project is the Probolinggo – Banyuwangi Toll Road, commonly called the Probowangi Toll Road. The Probolinggo – Banyuwangi Toll Road or Probowangi Toll Road is a 171.5 km long toll road that stretches from Probolinggo to Banyuwangi. The construction of the Probolinggo – Banyuwangi toll road itself is intended as an alternative connecting road between the two cities. The old road is Pantura Road which takes 4-5 hours, whereas if people pass the Probolinggo – Banyuwangi toll road, the travel time is only 2 hours. It is expected that there will be an increase in the distribution of goods and services to support the economic growth of the two cities in line with the increase in the trade and industrial sectors of Probolinggo Regency and the increasing number of tourists in Banyuwangi Regency. The calculation results in the Probolinggo – Banyuwangi Toll Road section 1 planning in this study shows that the 46.6 km alignment has 20 Points of Intersection bends and 37 Vertical Points of Intersection. The thickness of the rigid concrete pavement was 350 mm, the layer of Lean Mix Concrete was 100 mm, the drainage layer was 150 mm, and the cement stabilization was 300 mm. The total draft budget obtained was IDR 2.892.506.355.107,06.

Project Acceleration Analysis Using the Time Cost Trade Off Method in the Phase II Construction of the Serayu Pegalongan – Mandirancan River Bridge, Banyumas Regency

2023-07-10T05:31:43+00:00

The Serayu River Bridge is a bridge that connects Pegalongan Village with Mandirancan Village, Banyumas Regency, Central Java Province. This bridge has a total length of 140 meters divided into three spans using steel and reinforced concrete structures and has a road width of 8 meters. The implementation of the Serayu River Bridge phase II project has a planned duration of 150 calendar days from July 26, 2021, to December 22, 2021. However, in its implementation, there was a delay of 30 working days from the initial plan. The delay occurred because October had entered the rainy season and several other causes of delay. This study aimed to analyze the acceleration of the Serayu River Bridge phase II project to get the optimum time and cost. Acceleration was carried out by Time Cost Trade Off (TCTO) analysis based on conditions in the field. The alternative used was by adding work shifts and labor. Thus, with the acceleration analysis using these two alternatives, it is expected to produce a more optimum alternative in the project implementation if it experiences delays in terms of time and cost. After the acceleration analysis, it was found that the acceleration alternative with the addition of work shifts could be accelerated from 30 working days to 120 working days (down 20.00%). The project’s total cost, which initially amounted to IDR 10.794.871.204 to IDR 10.766.272.352, then there was a difference of IDR 28.598.851 from the project implementation before acceleration (down 0.26%). Meanwhile, the acceleration alternative with additional labor could be accelerated from 12 working days to 138 working days (down 8.00%). The total project cost, which initially amounted to IDR 10.794.871.204 to IDR 10.763.795.717, then there was a difference of IDR 31.075.486 from the project implementation before acceleration (down 0.29%).

Time and Cost Estimation of Watu Sewu Bridge Construction on the South Cross Road LOT 7 Project Blitar

2023-07-11T03:34:15+00:00

The Southern Cross Road project is a project that aims to facilitate transportation in the south of East Java. One of the segments on the Southern Crossing Road is the LOT 7 project that connects the Tulungagung Regency boundary – Serang – Malang Regency boundary. This study discussed the construction of the Watu Sewu Bridge, which is one of the works in the Southern Cross Road project. This bridge used a concrete main structure and a steel frame. During the construction process, there were several obstacles, such as unfavorable weather and difficult field conditions that resulted in project delays. Time planning and selecting the proper implementation method can assist in managing resources effectively and efficiently. This study planned construction management for the Watu Sewu Bridge construction, which consists of the substructure, superstructure, and pavement structure work. This study was prepared by identifying work items and calculating volume and productivity. These calculations were used to determine the duration and cost of implementation. Project scheduling used the critical path method using the Microsoft Project program. Based on the analysis results, it was obtained the final results of the duration and time of implementation, network planning, and S curve. It is known that the implementation time for the construction of the Watu Sewu Bridge was 154 calendar days, and the implementation cost was IDR 22.312.359.417.

Time Cost Trade Off (TCTO) Analysis by Considering Overtime Working Hours, and Labor Factors on the Outer East Ring Road (OERR) Surabaya Project (STA 0+000 – STA 5+875)

2023-07-11T03:37:35+00:00

In the implementation of construction projects, unwanted things often occur, including delays. Several factors cause these delays: inadequate material stock, delays in material arrival, damage to some tools, and human resources. Thus, it can affect the cost budget incurred to be bloated or excessive compared to the planned cost budget. In this study, an acceleration analysis was carried out on the Outer East Ring Road (OERR) Surabaya project using the Time Cost Trade Off (TCTO) method. Based on field conditions, the alternative to be used was to increase overtime working hours and increase the number of laborers. After the acceleration analysis, it was obtained that the acceleration alternative with the additional working hours (overtime) obtained an acceleration time of 224 days, with a total cost of IDR 95.435.963.465 from the normal cost of IDR 92.207.904.586. It was obtained that the acceleration alternative using additional working hours (overtime) generated a time efficiency of 17.04%, while cost efficiency decreased by 0.01%. While for the alternative of additional labor, the acceleration time was 130 days, with a total cost of IDR 95.438.444.127 from the normal cost of IDR 92.207.904.586. It was obtained that the acceleration alternative using additional working hours (overtime) generated a time efficiency of 51.85%, while cost efficiency decreased by 0.02%.