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All Journal Jurnal Teknik ITS IPTEK Journal of Proceedings Series Jurnal Transportasi Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Journal of Civil Engineering Civil Engineering Dimension Jurnal Transportasi: Sistem, Material, dan Infrastruktur Sewagati
Wahju Herijanto
Departemen Teknik Sipil Institut Teknologi Sepuluh Nopember
Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Transportation Other

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Journal : Journal of Civil Engineering

 1 
SURFACE WATER MODELLING AT LAMONG BAY Cahya Buana; Hera Widyastuti; Wahju Herijanto; Catur Arif Prastyanto; Anak Agung Gde Kartika; Budi Rahardjo; Istiar Istiar
Journal of Civil Engineering Vol 29, No 2 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1800.145 KB) | DOI: 10.12962/j20861206.v29i2.1731

Abstract

Development of ports in the Lamong Bay may result in changes in flow pattern and velocity. In order for such development does not cause a big impact analysis should be made based on the understanding of the physical processes that will occur. This study examined the flow pattern and velocity of Lamong Bay. Existing model simulation results indicate that the direction of motion of the water flow to the front line of Gresik Ports were more integrated with the dominant direction were Northwest - Southeast, whereas in front of the Port of Tanjung Perak flow direction were dominated by West - East. The findings also suggest the direction of movement of currents in the Lamong Bay were more spread and dominated by the movement parallel to the contour of the coastline.
FEASIBILITY ANALYSIS OF KEDIRI - TULUNGAGUNG TOLL USING JICA METHOD Hermansyam, Edna Rochmad; Herijanto, Wahju
Journal of Civil Engineering Vol 38, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i2.17342

Abstract

The Kediri-Tulungagung Toll Road is an essential part of the Non-Trans Java Toll Road, which is a national strategic project aimed at facilitating economic activities in the southern part of East Java and improving connectivity to Kediri Airport. This study focuses on analyzing the economic and financial feasibility of the Kediri-Tulungagung toll road development project.The feasibility study involves assessing the project's viability, determining whether it should proceed or be delayed. The analysis includes evaluating traffic volume data, measuring road saturation levels before and after construction, and analyzing the transfer of road users to the toll road. Furthermore, an economic feasibility analysis is conducted to calculate savings in vehicle operating costs and travel time, as well as assessing metrics such as Benefit-Cost Ratio (BCR), Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (PbP). Based on JICA 1 modeling and questionnaire responses, calibration values were determined for different vehicle classes. The economic feasibility analysis reveals a BCR value of 11,656 (BCR>1), an NPV of IDR 91,043,209,729,042 (NPV>0), and an IRR of 18.3811% (IRR>Interest rate). In the financial feasibility analysis using interest rates as discount rates, the BCR is 6,265 (BCR>1), the NPV is Rp 44,977,644,753,162 (NPV>0), the IRR is 11,872% (IRR>Interest rate), and the Payback Period occurs in the 24th year and 7th month after the toll road's operation. Based on these analyses, the Kediri-Tulungagung Toll Road is deemed economically and financially feasible when using interest rates as the discount rate.
ANALYSIS OF THE PERFORMANCE EVALUATION OF THE LOGISTICS EXPRESS LINER PORT ON THE T-14 TANJUNG PERAK – LARANTUKA – LEWOLEBA – KALABAHI ROUTE IN REDUCING PRICE DISPARITY Mawikere, William Aldrian Imanuel; Herijanto, Wahju
Journal of Civil Engineering Vol 38, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i2.17403

Abstract

The express liner program also known in Indonesia as "Tol Laut", initiated in 2015, aimed to reduce price disparities between Java and eastern Indonesian regions by providing regular and sustainable shipping services to remote areas. However, after seven years, the program has not significantly affected price disparities in eastern Indonesia. To evaluate the program's effectiveness, this study examined port performance and economic changes resulting from Sea Toll. The study identified areas of improvement for Larantuka, Lewoleba, and Kalabahi ports, such as docks, terminals, access roads, and storage facilities. Port performance evaluation revealed that Larantuka Port had subpar utilization of docks and stacking fields, while Lewoleba Port exhibited poor dock usage. Kalabahi Port, on the other hand, demonstrated good performance in dock utilization and stacking field usage. Regarding ship services, Larantuka Port showed good waiting time performance but poor loading and unloading productivity and ship effectiveness. Lewoleba Port had unfavorable waiting time in 2021 but improved in 2022, while its loading and unloading productivity and effectiveness were poor in both years. Kalabahi Port demonstrated good waiting time and effectiveness, but its loading and unloading productivity fell short of the standard. Evaluating the economic impact, the Sea Toll program did not significantly reduce the prices of necessities. Certain commodities experienced price increases influenced by regional distances and price fluctuations in Surabaya. However, medium rice prices decreased significantly in Larantuka and Kalabahi, indicating a positive impact of the Sea Toll program in those areas.
Intermodal Study at Old Gubeng and New Gubeng Railway Stasions Based on Passenger Satisfaction Analysis Agathakarien, Yudhistira Muharram; Herijanto, Wahju
Journal of Civil Engineering Vol 39, No 2 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v39i2.19963

Abstract

With the increasing frequency of trains, more and more people are becoming interested in using them for transportation. However, at Gubeng station, the majority of passengers still prefer to use private vehicles or online transportation instead of public transportation. To evaluate passenger satisfaction with intermodal services at both the new and old Gubeng stations, a performance analysis was conducted. Data analysis uses quadrant analysis with the gap analysis method, the Importance Performance Analysis (IPA) method, the Customer Satisfaction Index (CSI) method, and the Fishbein method. From the results of the analysis, a total of 303 respondents were obtained. In the Gap Analysis method, negative values were obtained for all attributes. The overall service satisfaction index using the Customer Satisfaction Index method obtained a satisfaction index of 0.523 with the criteria "quite satisfied". The overall attitude value of the Fishbein method was 417.335, the criteria for a "neutral" attitude value.
Co-Authors Ade Wisnu Muktyarso Aditya Ihdhar Hadyan Agathakarien, Yudhistira Muharram Agung Gde Kartika Aldila Riana Prabawati, Aldila Riana Alkahfian Ramadhani Wiasanto Alyssa Dewiputri Herdiana Andini, Ratna Andrian, Felix Annisa Nur Sakinah Atikah Safitri Bayu Rosida Sumantri Budi Rahardjo Budi Rahardjo Budi Raharjo Cahya Buana Catur Arif P. Catur Arif P., Catur Catur Arif Prastyanto, Catur Arif Catur Arif, Catur Catur Prastyanto Cut Munawwarah Data Iranata Dimas Dzaky Alhadi Dyah Ayu Risnu Indahsari Edna Rochmad Hermansyam Fajar Ihsan Kresnandi Farida Rahmawati Fianda Eka Widyanto Firda Aurellia Darmawan Gunarta, I Ketut Gurning, Raja Oloan Saut Hera Widyastuti Hermansyam, Edna Rochmad Indrasurya B Mochtar Indrasurya B. Mochtar Istiar Istiar Istiar Istiar Istiar Istiar Istiar Istiar Istiar, Istiar Joko Purwanto Kusmarini, Esti Peni M. Jufry, M. Makruf, Martin Mawikere, William Aldrian Imanuel Ma`ruf Tsaghani Purnomo Mohamad Bagus Ansori Muhammad Adnan Muhammad Hadid Muhammad Hadid, Muhammad Muhammad Nadim Cundoko Muhammad Zainal Muttaqin Naufal Yasir Faisal Prastyanto, Catur Arif Rendy Prasetya Rachman Ricky Achmad Subagya Rizki Alfiansyah Rizki Gusti Safira Nur'irqoh Sjadja'ah Salman Al Farisi Salman Alfarizi Sari, Putu Tantri Kumala Satrio Luhur Wicaksono Thobie Rahardian Priyandono Umboro Lasminto Ummatus Sholikhah, Ummatus Ummatus Solikhah, Ummatus Videla Denastyan Agpenta Putra Wahbi Ubaidulloh Wantoro, Dimas Wicaksono, Achmad Widiastuti, Hera Wisnu Hardian Pradito Zuhri Muhis