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All Journal Jurnal Teknik ITS IPTEK The Journal of Engineering IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Journal of Civil Engineering Jurnal Teknik Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Aplikasi Teknik Sipil Jurnal Transportasi: Sistem, Material, dan Infrastruktur Community Engagement and Emergence Journal (CEEJ) Journal of Infrastructure and Facility Asset Management Jurnal Teknologi dan Manajemen Industri Terapan Journal Research of Social Science, Economics, and Management Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Jurnal Penelitian Transportasi Darat Warta Ardhia: Jurnal Transportasi

Ahyudanari, Ervina

Civil Engineering Department, Institut Teknologi Sepuluh Nopember

Author-ID : 797844

Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation

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Design and Development of Data Management System to Support The Preparation Process of Accreditation form for Program Study Artin Finalita; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.8486

In order to realize public accountability, the program study must actively build an internal quality assurance system. To prove that the internal quality assurance system has been implemented properly and correctly, the program study must be accredited by an external quality assurance institution. Criteria for evaluating commitments in accreditation are outlined in number of standards and are presented by programs study in instruments of forms. The problem that arises is that data/ documents for the process of supporting accreditation forms are not all available in the Program Study so they still have to involve other units to obtain them. The purpose of this study is to design a data management system to prepare the availability of data / documents to support the process of preparing accreditation forms. The System Development Life Cycle (SDLC) method is used with the waterfall model in designing this system. This research has produced an application system called Dokumen Akreditasi Online which is oriented towards standards of accreditation form. Overall the results of testing the system functionality shows that all features in the application can be run. The results of measuring the level of user satisfaction amounted to 75.27% which means that users are satisfied with this system. Thus, the need to prepare for accreditation is faster and easier and useful for other administrative needs.

The Distribution of Damage to District Roads in Karang Penag Sub-District in Sampang District Uses Pavement Condition Index (PCI) and Spatial Poisson Point Process (SPPP) Sulhan Sulhan; Nur Iriawan; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11193

Karang Penang sub-district is a new sub-district after the division of territory in the Sampang Regency. This sub-district consists of seven villages. Sampang Regency is an area that is categorized as underdeveloped regions in East Java Province. This is indicated by the economic conditions and the low quality of human resources, and inadequate infrastructure. The last indication needs to be carried out regularly to ensure its continued functioning in supporting economic movements in this area. Delay in the identification of damage that often occurs in this area has caused delays in the maintenance of the facility. To overcome the delay in preparing the repair schedule, it is necessary to make a faster and more accurate assessment of road conditions. This study aims to assess the condition of the road pavement by combining the two approaches, namely the Pavement Condition Index (PCI) method and the Spatial Poisson Point Process (SPPP). The results of the modeling are expected to be able to identify the distribution pattern of the locations of damage points of the highway, to identify what parameters have a significant role in the distribution of the points of damage to the highway, and to be able to identify the level or condition of district highway conditions in Karang Penang District. The results of this study are able to provide predictions of the pattern of road damage conditions with varying intensity and influential factors between highway locations. These results, in turn, can provide information on the pattern of corrective actions that are more appropriate according to the damage criteria at these locations.

Application of House of Risk (Hor) Models for Risk Mitigation of Procurement in The Balikpapan Samarinda Toll Road Project Doddy Arief Wibowo; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.8481

The Balikpapan Samarinda Toll Road Project built 99 km has a relatively short implementation time of 3 years. The accuracy of project completion is closely related to the procurement of materials during the implementation period. Risk analysis based on ISO 31000: 2009 where the risk of delay in procurement of materials is included in the extreme category with a high level of probability and severe impact. Risk analysis is carried out qualitatively, that is, determining risk priorities by determining the likelihood of events and their effects on project performance. Material procurement delays still occur due to various factors that have not been mitigated in the planned risk analysis. This resulted in project performance not on schedule. The purpose of this study is to provide a proactive framework for managing material procurement risks. The method used is the House of Risk (HOR) from the literature study. The HOR method is very commonly used in supply chain risk management. The HOR method focuses on preventive actions determining the main risk agents and the priority of preventive actions. The advantages of this method are in the framework that can cover the whole process of risk management. Phase 1 of HOR begins with the identification of risk events and phase 2 of risk treatment. This framework allows management to select priority risk agents to be mitigated and prioritize proactive actions to reduce the impact of risk events. The results of the study are 14 risk events and 15 risk agents that can occur in the material procurement process. From the Paretto Diagram, 4 risk agents were selected, namely schedule changes became faster, bill payments required a long period of time, problems in supplier selection, and material fabrication time. Based on the analysis of preventive action 3 actions proposed in this study are coordinating with the finance department to monitor supplier bills, coordinate with production for proper procurement schedules, and evaluate suppliers.

Project Performance Analysis Using the Earned Value Management (EVM) Method (Case Study: PT XYZ) Akhmad Ittang Anwarsyah; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 5 (2019): The 1st International Conference on Business and Management of Technology (IConBMT)
Publisher : Institut Teknologi Sepuluh Nopember

The development of the construction in Indonesia is growing rapidly over time, along with rapid economic growth. In its implementation, many projects have problems with work delays so that the project completion is not in accordance with the scheduled time and results in increased costs due to additional completion time. This delay puts the contractor to do a re-planning or commonly referred to as a re-baseline. The inaccuracy of re-planning can have an impact on not achieving revenue targets and having a commercial impact on the construction company. a project performance analysis is needed to anticipate these problems as early as possible. The method used to analyze project performance with a review of the implementation time and budget to manage the dynamics that occur is to use the Earned Value Management method. EVM is a method that is used to determine the progress of a project greater or smaller than the budgeted budget and faster or slower than a predetermined schedule. This study shows that EVM parameters, namely SPI and CPI on 3 PT Projects. XYZ shows both in the field of work (SPI) or budget planning (CPI), PT. XYZ still shows a performance that is not good enough. Whereas EVM Analysis on 3 XYZ Projects shows that the cost requirements needed for project completion are above the budget. The Sugar Factory EPCC Project A based on EVM will require 107% of the BAC value for completion of work, the EVM-based Cooking Plant Construction Project will require 110% BAC for completion of work and the Sugar Factory EPCC Project B based on EVM will require 106% BAC to complete the work. Referring to the EAC calculation and risk mitigation for the costs needed, the Project for the Construction of Edible Oil Plants has the greatest potential to be able to reduce business yields. Through EVM, it was also found that the time for implementing the three projects increased from the duration of the initial planning. The EPCC Project for Sugar A Factory increased for 6 Months, the Cooking Oil Plant Construction Project increased for 5 months and the EPCC Sugar Factory B Project increased for 2 months.

Success Factor Analysis of Multiple Project Management Taftazani Hakim; Ervina Ahyudanari; Rita Ambarwati
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.7992

PT XYZ is one of the largest manufacturing industry companies in Indonesia, that using multiple project management. Several concurrent projects existed, or also referred as multiple project management. Multiple project often cause several problems, such as the long duration of the project because of wrong determining priorities and limited resources. These problems certainly affect the success of the project in general. The success of the project is measured by the project iron triangle, that is budget, quality and time. Success of a project is important, and many research has been done to determine the project success factors. However, there is still limited research related to multiple projects. This is exploratory research, and initial stage where researchers will determine the factors that support the success of multiple projects. Following the variable identification from literature study, a survey was conducted. This research use exploratory factor analysis (EFA) and mean vs standard deviation analysis. Results of the study, success factors of multiple projects formed six factors including communication, organizational, technical, external, resource, and project factors. As a recommendation for the company, which factors are significant are seen from the results of the mean analysis, with the highest significance results are : (1) Material availability; (2) Realistic planning; and (3) Manager's competence

IRR Incremental Analysis of Fuel Facility Construction Projects - Juanda Airport Terminal 2 Dimas Bagus Satriyo Wibowo; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11203

Indonesia is the largest archipelago country in the world so that Indonesia's need for air transportation cannot be avoided. The demand for air transportation services increases in line with the increase in population and the level of welfare of the people. At Juanda Airport until the end of 2013 the number of passengers exceeds the capacity of the existing terminal. Overcoming this problem, PT Angkasa Pura I developed Terminal 2 of Juanda Airport, which began operating on 14 February 2014. With the development of facilities and flight facilities for Juanda Airport, aviation fuel supply needs have also increased. PT Pertamina (Persero) through the Aviation business unit as a provider of jet fuel at Juanda Airport, supports the development of the airport facilities. The investment carried out in 2017-2020 are the installation of a hydrant system pipeline for Terminal 2 and the addition of a storage tank to increase coverage days in the Depot Pengisian Pesawat Udara (DPPU) Juanda planned to begin in 2020. Until December 2019 the hydrant system project progress has reached 96%, but there has been a decline flight frequency since December 2018 due to partial closure of routes by airlines, reduction in flight frequencies and a decrease in jet fuel prices at market demand, so it is necessary to decide whether or not to continue investing in tank construction. Therefore, capital budgeting analysis is carried out using the incremental Internal Rate of Return (IRR) method between hydrant project investments and tank construction compared to hydrant projects without tank construction. The results of the incremental IRR analysis showed an IRR of 9.81% while the MARR used was 10.38%.

Determining Constructions Phase Risk Mitigation of Shutdown Valve Control Panel Replacement Project West Madura Offshore Shoffan Abdi Tunggal; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.8898

PHA is an oil and gas Cooperation Contract Contractor (KKKS) in Indonesia, playing an important role in achieving the national oil and gas production target. To maintain operational and production continuity, a replacements shutdown valve control panel project performs at the production facility of West Madura offshore field. It was the first control panel replacement project carried out at the live production facility. Project team identify some high risk activity through process and occupational safety. Research needs in order to determine construction phase project risk mitigation, by hazard identification, risk analysis, classification and proposed preventive actions as necessary. Proposed analysis and risk management determined by Focus Group Discussion and House of Risk modeling methods, research identified 23 risk events, 23 risk agents, risk mitigation defined by aggregate risk potential and its prioritie. Aiming on reducing risk occurrence and improving positive impact for sustainability and objectives of the project. 24 preventive actions are selected with 5 top priority preventive action proposed.

Analysis of Aggregate Gradation to Improve The Characteristics of Geopolymer Based Asphalt Concrete Akhmad Taufik Aditama; Januarti Jaya Ekaputri; Ervina Ahyudanari
IPTEK The Journal for Technology and Science Vol 29, No 3 (2018)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

The previous study showed that asphalt concrete using filler geopolymer generate a higher value of stability. On the other hand, the value of flow and the porosity of the asphalt concrete were out of the specification range. This study examines the aggregate gradation analysis to improve the characteristics of mixed asphalt concrete geopolymer. The gradation of aggregate is variated into three following the available specification. The range of specification is then separated into three, those are aggregate gradation upper specifications, middle specification, and lower specification. Filler comes from geopolymer paste, composed of fly ash which is mixed with an activator. Activator is an 8 molar concentration of NaOH solution and Na₂SiO₃. The weight ratio of Na₂SiO₃ over the weight of NaOH solution was 1.5. Geopolymer paste waited until reached the age of 28 days, then pounded up to meet the requirement size of the sieve No. 200. The test of mixture characteristics was conducted to see the comparison of performance from different gradations. The test results showed that middle gradation generating characteristics of the mixture which is higher than upper gradation and lower gradation.

Effect of Incorporating Super Bond Additives on Volumetric and Mechanical Characteristics of Cold Mix Asphalt Concrete using Asbuton Rosman Hidayatulloh; I Dewa Made Alit Karyawan; Ervina Ahyudanari
JURNAL TEKNIK Vol. 15 No. 2 (2021): Edisi Oktober 2021
Publisher : JURNAL TEKNIK UNILAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/teknik.v15i2.7616

Asbuton is the natural asphalt of Buton Island, Southeast Sulawesi. Asbuton has substantial reserves with deposits estimated at between 150 to 300 million tons. Asphalt mixture using Asbuton can be done with a cold mix. This mixture requires a rejuvenating agent that serves to soften and rejuvenate the asphalt properties contained in Asbuton. The rejuvenation process that is less than optimal results in the low quality of the asphalt mixture. Therefore, it is necessary to conduct a study to improve the performance of cold mixtures using Asbuton. In this study, super bond additives were used. This study aims to determine the extent to which the performance of asphalt-concrete mixtures using Asbuton with the addition of super bond additives in the rejuvenating agent is increased. The addition of additives was varied with levels of 0.0%, 0.2%, 0.3%, and 0.4%, so that the impact could be known. The best asphalt concrete mix characteristics were obtained at the addition of 0.4% additives. Where, for volumetric characteristics the values obtained are: Void in the Mix (VIM) 5.08%, Void in Mineral Aggregate (VMA) 19.6% and Void Filled with Bitumen (VFB) 74.0%. While the mechanical characteristics are: Stability 609 kg, Flow 2.7 mm and Marshall Quotient 223 kg/mm. Only the Marshall Quotient value does not meet the minimum requirements, because it is < 250 kg/mm.

Analisis Perbandingan Kadar Aspal Optimum (KAO) untuk Perbedaan Gradasi (BBA, FAA dan BM) Anwar Efendy; Ervina Ahyudanari
Jurnal Aplikasi Teknik Sipil Vol 17, No 1 (2019)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Gradasi agregat adalah salah satu bagian penting dalam campuran beraspal. Sifat-sifat campuran seperti stabilitas, kekakuan, kemudahan kerja, permeabilitas, keawetan, ketahanan terhadap kelelahan, tahanan gelincir, dan ketahanan terhadap air sangat dipengaruhi oleh gradasi agregat. Ada 3 jenis gradasi yang digunakan dalam penelitian ini, yaitu gradasi BBA merupakan gradasi terbuka sedangkan gradasi FAA dan gradasi BM merupakan gradasi rapat. Gradasi BBA dan FAA merupakan gradasi yang digunakan untuk perkerasan bandara sementara BM adalah gradasi yang digunakan untuk pembangunan jalan. Pada tahun 2018, permintaan aspal di Indonesia mencapai 1,8 miliar ton, tetapi yang dapat dipenuhi oleh produsen aspal lokal hanya mencapai 344 juta ton. PT. Pertamina (Persero) hanya mampu memenuhi 30% dari kebutuhan aspal dalam negeri. Sisanya 70% aspal diimpor dari Singapura karena pasokan aspal rendah dari produsen dalam negeri. Tujuan dalam penelitian ini untuk menentukan perbandingan dari kebutuhan kadar aspal optimum antara gradasi BBA (Beton Bitumineux pour chausées Aéronautiques), gradasi FAA (Federal Aviation Administration) dan gradasi BM (Bina Marga 2010 revisi 3). Dari ke 3 jenis gradasi tersebut, gradasi FAA yang memiliki Kadar Aspal Optimum terendah yaitu, 5,13%, kemudian gradasi BM 5,65% dan yang tertinggi gradasi BBA 6,1%.

Co-Authors Abda Abda Abdallh. A. A. Lhwaint Abrahem A Ali blash Adhyaksa Adha Rahman Aditiya Rendra Riawan Aditiya Rendra Riawan Aditya Sutantio Aftoni Alvin Fahmi Agustina Dwi Retnaningtias Akbar Bayu Kresno Suharso Akhmad Ittang Anwarsyah Alifah Widya Rochmah Amani, Farrell Zata Andree Noviar Pradana Anwar Efendy Artin Finalita Ary Wahyudi Askia esa Aulia Baskara, Gusti Made Bagus Budi Rahardjo Caristyan, Griselda Amadhea Catharina Tiffani Wulandari Christiono Utomo Deanty Putri Maritsa Dian Ayu Wicahyani Dimas Bagus Satriyo Wibowo Dimita Brilian Zahra Doddy Arief Wibowo Edi Supriyono Eriza Islakul Ulmi Faisal Esa Arighi Fajrin Ramadhani Febriliyan Samopa Fitria Putri Luthfiyani Freedy Kristiawan Garin Yacub Gumbiratno Widiatmoko Gunawan Kunto Bhasworo Halim Prasetyo Hutomo Hariyadi, Hariyadi Hendra Annisa Putri Lintang Hestuningrum Hendra Annisa Putri Lintang Hestuningrum Hendrawan Setyo Warsito Hera Widyastuti Hersanti Rahayu Hidayatul Amri Hitapriya Suprayitno, Hitapriya Hutapea, Sean Ivander Sahata I Gede Mardawa I Nyoman Arya Thanaya I Putu Artama Wiguna Ida Bagus Barawakya Iik Radevi Burhamsi Putri Ilham Siara Indra Denny Priatna Indrasurya B. Mochtar Istiar Istiar Istiar Jaballah, Danish Inayat Jaelani, Lalu Muhamad Jannatul Arif Januarti Jaya Ekaputri Karmini Karmini Karyawan, I Dewa Made Alit Kevin Andrea Larri, Rossan Fadel Lilla Anjani Birahmatika Lilla Anjani Birahmatika Maâ€™ruf, Buana Maulina Indah Harvianti Maulina Indah Harvianti Mirza Al Mahbubi Mohmed Alshekh A. M. Hmade Muhammad Akbaryan Anandito Muhammad Galih Muhammad Irfan Ardiansyah Muhammad Nursalim Muhammad Rezky Ridwan Muhammad Yuanto Permana Muhtadi, Adhi Nafilah el Hafizah Nur Iriawan Nursakti Adhi Pratomoadmojo Ofel Simon Pangestu, M. Agus Prastyanto, Catur Arif R. Haryo Triharso Seno Raihan Akbar Ghifari Rita Ambarwati Rizky Fitri Amalia Istighfaroh Rohmatul Maghfiroh Rosman Hidayatulloh Rungkat, Jersey Jehezkiel Elison Ruffi Salsabila, Dhea Lutfiyah Sekartadji, Ratih Shoffan Abdi Tunggal Stefanus Stefanus Sulaksmono, Haris Sulhan Sulhan Supriyanto, Supriyanto Suryawan Murtiadi, Suryawan Syarif, Iif Ahmad Taftazani Hakim Udyani Salma Widyaswari Viorentika Vigrid Yuniar Diergan Putri Viorentika Vigrid Yuniar Dirgan Putri Wahyu Herijanto Wajdino Arfa Rajawidad Wasono, Sapto Budi Widhi Utomo Megantoro Widodo, Alvian Wahyu William Bunkharisma Windy Ariesna Wardhani Wiryanta, Wiryanta Youngky Riantara Putra

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