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All Journal Jurnal Teknik Sipil JHP17 (Jurnal Hasil Penelitian) The Spirit of Society Journal : International Journal of Society Development and Engagement EXTRAPOLASI: Jurnal Teknik Sipil Jurnal Review Pendidikan dan Pengajaran (JRPP) Community Development Journal: Jurnal Pengabdian Masyarakat International Journal Of Science, Technology & Management (IJSTM) Devotion: Journal of Research and Community Service Extrapolasi International Journal of Social Service and Research JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) Jurnal Rekayasa Teknik Sipil dan Lingkungan Journal of Social Research Journal Of World Science Journal Of Human And Education (JAHE) International Journal Science and Technology (IJST) Journal of Management, Accounting, General Finance and International Economic Issues (MARGINAL) International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) INJURITY: Journal of Interdisciplinary Studies Journal Research of Social Science, Economics, and Management Eduvest - Journal of Universal Studies Jurnal Ekonomi, Teknologi dan Bisnis Enrichment: Journal of Multidisciplinary Research and Development Asian Journal of Social and Humanities International Journal of Social Science and Community Service
Budi Witjaksana, Budi
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Neuroscience Public Health Social Sciences Transportation Other

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ANALYSIS OF PROJECT ENFORCEMENT DELAYS WITH THE EARNED VALUE METHOD: (Case study: Office of Bahtera Elang Perak Indonesia Surabaya) Nailufar, Linda; Witjaksana, Budi; Wulandari , Esti
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 3 No. 3 (2024): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v3i3.1167

Abstract

The construction of the Bahtera Elang Perak Indonesia (BEPI) Office is one of the ongoing projects in Surabaya City consisting of 8 floors with an area of 1,081 m² and a contract value of Rp. 13,908,226,157.00. The Bahtera Elang Perak Indonesia office construction project is planned to last for 43 weeks. In reality, when the piling work is in progress, there are several changes so that there is a need for rescheduling or re-schedulling. The length of implementation time became 54 weeks. The current condition of the progress of the construction of the Bahtera Elang Perak Indonesia Surabaya office is in week 37 at 35.67% while the planned progress is 43.619% so that there is a difference of -7.948%. In order to address this issue, an evaluation of the project's cost and time efficiency during implementation is conducted utilizing the Earned Value Method. This strategy seeks to assess the project's performance in terms of both cost and time. The analysis conducted in week 41 revealed that the performance of the project, in terms of cost, was below expectations with a CPI value of 0.945, indicating that the actual costs exceeded the budgeted costs. Additionally, the CV value of Rp. -381,606.94 further confirmed this negative deviation. In terms of time, the project also experienced delays, as indicated by an SPI value of 0.758, which is less than 1. The SV value of Rp. -2,082,524,745 further highlighted this delay, indicating that the completed work packages were fewer than planned.
ANALYSIS OF INVESTMENTS IN THE BUILDING OF THE GELORA BUNG TOMO CITY OF SURABAYA Sulistianto, Leo Agus; Witjaksana, Budi; Wulandari, Esti
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 3 No. 3 (2024): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v3i3.1168

Abstract

The Gelora Bung Tomo area currently includes a football stadium, three training fields, a wheel-shoe track, a motorcycle racing circuit, and a multipurpose indoor sports building. With the evolving automotive industry, upgrading the circuit from grade D to grade C is necessary to accommodate more races. This involves extending the 650-meter road race track to 1700 meters, including a pit stop area, audience tribune, paddock, and commercial area. The study evaluates the current facilities of the Gelora Bung Tomo (GBT) area in Surabaya and conducts investment analysis to determine financial viability. The research methodology combines quantitative and qualitative approaches using previously obtained primary and secondary data, then compiles cash flow projections and performs investment analysis using investment valuation methods, namely net present value (NPV), internal rate of return (IRR), benefit cost ratio (BCR), and payback period (PP). Based on the results of the analysis with the Net Present Value (NPV) method, if a positive value of Rp. 13.339.690.346 is obtained, then the investment is acceptable. If the benefit-cost ratio is greater than 1,1849, then the project is accepted, and the PP is 30.98 under the time of the investment of 50 years, but the greater the risk faced, the more the overall investment is worthy of being implemented.
TIME ANALYSIS WITH CRITICAL PATH METHOD: (Case Study on Jakarta Sewerage Development Project Zone 1, Package 2: Sewer Construction in Area 1-1) Hartawan, Ade Sholeh; Witjaksana, Budi; Wulandari, Esti
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 3 No. 3 (2024): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v3i3.1174

Abstract

Preparatory work in a construction project generally includes the fulfillment of work facilities, field investigations, and licensing, and is typically non-structural. The implementation of the Jakarta Sewerage Development Project Zone 1, Package 2: Construction of Sewers in Area 1-1, which is currently still in the preparatory work stage, is experiencing significant issues. Specifically, the project is facing a very complex licensing process, resulting in minimal work progress. This is due to the project planning phase not adequately considering the timeframe required for obtaining an implementation permit. Therefore, this paper analyzes the project timeline to identify project performance during the preparation period before the main project work implementation stage. In this study, the Critical Path Method (CPM) scheduling method was applied to the project to determine the activities on the critical path, utilizing the Microsoft Project application. The analysis identified that the activities on this critical path include Document Submission Work, Shaft Location C-8.1 Work, 8-span Pipe Jacking Work, Diversion Chamber Work, and Contract Closing. The analysis of the relationship between the licensing process and the critical path of the Master Schedule, as determined by the CPM method, revealed a delay in the start time of Shaft work from the planned June 3, 2024, to June 21, 2024, representing a 17-day delay from the original plan.
CAPACITY ANALYSIS OF DRAINAGE CHANNELS ON PUBLIC ROADS IN FRONT OF THE SIDOARJO CLASS 1A RELIGIOUS COURT OFFICE: A REVIEW OF MAINTENANCE COSTS Ernitasari, Windya Yunesti; Witjaksana, Budi; Patriadi, Andi
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 3 No. 4 (2024): NOVEMBER
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v3i4.1179

Abstract

Flooding in front of the Sidoarjo Class 1A Religious Court Office road happens frequently during the rainy season. It disrupts traffic and damages the roads. Flooding is caused by the condition of the drainage channels, which are not performing efficiently due to sediment barriers such as garbage, and some channels appear to be damaged. The existing channels can no longer accommodate the water discharge caused by the rain, thus water overflows from the drainage channels, flooding the main road. These conditions show the importance of handling drainage problems. One of the ways that can be taken is to evaluate the capacity of existing drainage channels. In this study, the evaluation of drainage channel capacity was carried out using the Hydrological and Hydraulics Analysis method. The purpose of this study to assess the suitability of the magnitude of the 5-year return period flood discharge with the capacity of the existing drainage channel, and to find a solution if the drainage system can no longer accommodate the magnitude of the proposed flood discharge. The chosen alternative was alternative 2 drainage channel rehabilitation with increased channel dimensions. Based on the calculated results, a channel dimension plan with a width of 0.6 m and a height of 0.80 m was necessary. The cost required for drainage channel rehabilitation was 750,605,179.00 rupiahs.
TIME DELAY ANALYSIS USING CRITICAL PATH METHOD (CPM) (Case Study: Kerobokan Bali Parking Building Construction Project) Putri, Dwi Cahyani; Witjaksana, Budi; Tjendani , Hanie Teki
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 3 No. 4 (2024): NOVEMBER
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v3i4.1189

Abstract

Parking Building is a structure specifically built for vehicle parking. Kerobokan Bali Parking Building is one such structure that utilizes steel as its main material. With dimensions of 13.97 meters in height, 32.8 meters in width, and 16.18 meters in length, this building had a planned construction duration of 259 calendar days starting from July 2023. The parking building experienced delays due to flooding in the basement area, necessitating time acceleration analysis using the CPM method. This thesis employs the CPM method to identify critical path activities. Once the critical paths are identified, a crashing program analysis will be conducted, involving an alternative such as overtime work with a duration of 4 hours. Based on the analysis using the CPM method, it was found that 75 activities are critical, listed in Microsoft Project rows 368-369-370-372-380-381-382-383-384-385-387-388-389-390-392-393-394-395-398-399-400-402-403-404-406-412-415-416-417-419-420-421-422-424-425-426-427-428-430-431-432-433-435-436-437-438-441-442-443-445-471-472-473-475-476-477-479-526-527-528-530-535-621-628-629-630-633-634-635-638-639-640-643-644.
Estimated Cost And Time For Completion Of The Bali GX Office And Co Working Project Using The Earned Value Method Rohim, Abd.; Witjaksana, Budi; Teki Tjendani, Hanie
International Journal of Science, Technology & Management Vol. 5 No. 3 (2024): May 2024
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v5i3.1076

Abstract

The GX Office & Co Working Bali construction project faced significant delays in the 27th week with a deviation of -4.31%, which could result in increased costs and delays in completion. So, an effective solution is needed to overcome project delays and ensure that the project is completed on time and within budget. This research aims to examine the application of the Earned Value Method (EVM) in evaluating the performance of the GX Office & Co Working Bali project by calculating the Estimated Temporary Schedule (ETS), Estimated All Schedule (EAS), Estimate Temporary Cost (ETC) and Estimate All Completion (EAC). The research uses descriptive quantitative methods by collecting data from weekly project progress reports, actual costs, and planned values. Data analysis was carried out by calculating Planned Value (PV), Earned Value (EV), Actual Cost (AC), Cost Performance Index (CPI), Schedule Performance Index (SPI), ETS, EAS, ETC, and EAC. The research results show an ETS value of 114 days with an EAS of 303 days. So, there is an additional time of 9 days from the planned schedule. ETC results amounted to IDR 3,723,631,710.12, with EAC amounting to IDR 7,699,818,710.12. So, the cost of completing the project is lower than planned, with a difference of IDR 2,545,727,760.88. The results of this research contribute to the project management literature by showing the effectiveness of EVM in identifying deviations and the basis for making strategic policies needed so that projects can be completed on time according to plan.
Identifying Critical Tasks in the Kadiri University 4 Floor Building Construction Project Using the Critical Path Method Ali, Mahardi Kamalika Khusna; Tjendani, Hanie Teki; Witjaksana, Budi
International Journal of Science, Technology & Management Vol. 5 No. 3 (2024): May 2024
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v5i3.1110

Abstract

This study aims to identify critical tasks in the construction of a 4-floor building at Kadiri University using the Critical Path Method (CPM). The project is planned to be completed within 43 weeks, from October 2023 to August 2024, with a budget of IDR 20,551,534,000. Data collection involved direct site visits for primary data and secondary data from project documentation, including the Cost Budget Plan (RAB) and project schedule. Using Microsoft Project software, a project network was mapped, and CPM analysis was performed to identify the critical path. The analysis revealed that several tasks, such as site cleaning, demolition, temporary project fencing, heavy equipment work, geotechnical work, and various structural works from the 1st to the 5th floors, are on the critical path. These tasks have zero slack time, indicating that any delays will directly impact the overall project timeline. Identifying the critical path is crucial for project managers to prioritize resources and efforts on these tasks to ensure the project stays on schedule. This study underscores the significance of CPM in project management for timely completion and effective resource allocation, providing valuable insights for managing similar construction projects.
ANALISIS PERSEDIAAN MATERIAL DENGAN METODE MATERIAL REQUIREMENT PLANNING PADA PEKERJAAN STRUKTUR PROYEK RSUD SIDOARJO Alifia; Witjaksana, Budi
Jurnal Rekayasa Teknik Sipil dan Lingkungan - CENTECH Vol. 5 No. 1 (2024): Vol. 5 No. 1 (2024): Jurnal Rekayasa Teknik Sipil dan Lingkungan, APRIL ISSN 27
Publisher : UKI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/cen.v5i1.5721

Abstract

In the world of construction, materials play an important role in the running of a project. Material is one of the main raw materials that greatly affects the amount of project costs. Material inventory affects the progress of work and planned costs. The problem of shortage and excess stock of materials is related to material inventory management. Therefore, material inventory planning is something that must be considered. This study aims to analyze and calculate the total cost of material inventory efficiently and minimally in the Construction of the Integrated Central Building of RSUD Sidoarjo Regency. The material inventory method used is Material Requirement Planning (MRP) with three approach techniques, namely Lot For Lot (LFL), Economic Order Quantity (EOQ), and Period Order Quantity (POQ). The results of this study obtained lot sizing techniques with efficient MRP methods and minimum total material inventory using the Period Order Quantity (POQ) technique except for D10 Iron and D19 Iron using Lot For Lot (LFL) techniques. The costs incurred in the material inventory of each type of 4th-floor structure material are Multiplex Material t = 9 mm melamine Rp. 133,601,679, Iron Concrete D10 Rp. 212,685,500, Iron concrete D13 Rp. 171,485,930, Iron concrete D16 Rp. 56,760,803, Iron concrete D22 Rp. 155,031,888, and Concrete ready mix fc '= 25 Mpa Rp. 292,512,673. By using the right lot-sizing technique, it is expected to solve the problem of lack or excess material
STRATEGIC OVERTIME IMPLEMENTATION: ASSESSING CRASH TIME, CRASH COST, AND COST SLOPE IN THE CONSTRUCTION OF KADIRI UNIVERSITY'S 4-STORY BUILDING Ali, Mahardi Kamalika Khusna; Tjendani, Hanie Teki; Witjaksana, Budi
International Journal Science and Technology Vol. 3 No. 2 (2024): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v3i2.1309

Abstract

The lecture building is an important building which is the center of academic activities where educational activities are carried out. Currently, the construction of a four-story lecture building at Kadiri University is experiencing significant project delays with a deviation of 5.64% from the plan. Crash analysis can be carried out to speed up the duration of the project so that it can be completed on time with additional working hours. This research aims to determine crash time, crash costs, and cost slope for the application of overtime on the 4-story building construction project at Kadiri University. A quantitative and case study approach was used with data collected through observation, interviews, and analysis of project documents. Critical Path Method (CPM) analysis is carried out using Microsoft Project software to identify work that is on the critical path. Crashing is done by calculating crash time, crash cost, and cost slope. The research results show that applying 1 hour of overtime can speed up the project by 12 working days, with an additional cost of IDR 24,488,758. Cost slope analysis shows additional overtime costs of IDR 12,244,379. This research shows that the application of measurable overtime and crashing analysis can effectively overcome project delays in the context of building educational facilities.
EVALUATION OF TIME AND COST PERFORMANCE ON THE GX OFFICE & CO WORKING BALI PROJECT USING THE EARNED VALUE METHOD Rohim, Abd.; Witjaksana, Budi; Tjendani, Hanie Teki
International Journal Science and Technology Vol. 3 No. 2 (2024): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v3i2.1337

Abstract

In rapid construction developments, delays still occur frequently and have not been resolved, as experienced by the GX Office & Co Working Bali project. The project will be completed in 42 weeks, but in the 27th week, there is an indication of a delay of -4.31% from the initial plan. Earned Value Method (EVM) is a time and cost performance assessment method that can be used to develop strategies to minimize delays. This research aims to evaluate the time and cost performance of the GX Office & Co Working Bali project using the EVM method. A quantitative approach is used to collect and analyze project schedules, actual costs, and progress reports. EVM key indicators such as Planned Value (PV), Earned Value (EV), and Actual Cost (AC) are analyzed to determine Schedule Variance (SV), Cost Variance (CV), Schedule Performance Index (SPI), and Cost Performance Index (CPI). The results showed that the project experienced delays, especially from week 1 to week 14 and week 19 to week 27, with SPI values mostly below 1. However, the project showed increased efficiency in cost management with values CPI above one after week 14 to week 27, indicating that the actual costs incurred are lower than the value of the work completed. These findings highlight the need for corrective actions and more effective management strategies to address delays efficiently in terms of costs.
Co-Authors A. Asrijal Abdul Q, Muhammad Ali Hasymi Adam, Ijaz Adi Purwanto Adiputra, Reza Aditya, febri Agustian Setyagraha, Javan Akhmad Dahlan Alan Muin, Oskar Ezra Alfianti, Diah Mega Ali Imron, Mohammad Alifia Amalia, Mekar Meilisa Ardhiansyah, Widha Ardianto, Lukman Ari Purwanti Arifin, Syaadiah Ariyanto, Subkhan Asmoro, Mochamad Ranoe Balido, Pandji Thoha S. Cahyono, Febri Candra Kelana Putra, Utuh Dwi Candra M, Alang Dewi, Dita Dismalasari Eko Pramono Ernitasari, Windya Yunesti Esti Wulandari Eva Desembrianita Farchan, Muchamad Firdaus, Muhammad Bayu Gede Sarya, Gede Hamzah, Aulia Hanie Teki Tjendani, Hanie Teki Hardi, Edelbertus Lusius Hartawan, Ade Sholeh Hepiyanto, Rasio Hepiyanto, Rasio Herkunadi, Dimas Fitra Herry Widhiarto, Herry Ibnu Andli Marta Imron, Achmad Imron, Achmad Irfan, Bachtiar Muhammad Irma Martaningtyas, Irma Jaka Purnama K., Moh Ali Lutfi M. Khakimin, Achmad Lukmanul Langi, Jeffrey Payung Lendra Lendra Lesmana, Denny Indra Liza Husnita Lutfi, Moh Ali Meganda, Danniar Firdaus Meilasari, Shavica Kurnia Mochamad Nurcholis Mughni, Amalia Fathimah Azh Zhahra Muhammad Muhammad Muqaddas, Zaiful Nailufar, Linda Nofirman, Nofirman Novianto, Muhammad Taufik Nugraha, Budidarma Ardi Nurkaruniati, Titik Oetomo, Wateno Patriadi, Andi Permana, Midi Agus Pramadha, Ichsan Yanuansyah Prastyadi Wibawa Rahayu Pratondo W, Wahyu Proboretno, Wuri Purba, Ulfani Ikhwana Putri, Dwi Cahyani Rafi, Yudha Fatkur Rahmatullah, Yan Raimundo, João Rakasyiwi, Gilang Ramadhan Reresi, Samuel Petrik Reresi, Samuel Petrik Ridha Annisa Imaniar Riduwan, Sanda Praja Ridwan, Ridwan Rohim, Abd. RR. Ella Evrita Hestiandari Sajiyo Sajiyo, Sajiyo Septa Intiar SETIAWAN, ENDIK Setyagraha, Javan Agustian Sudrajat, Didi Sugeng Hariyadi, Sugeng Sulistianto, Leo Agus Suroso Suroso Tamrin Fathoni Teguh Prasetijo, Christiawan Teki Tjendani, Hanie Tjendani , Hanie Teki Tjendani, Hani Teki Triska Bayu Wedananta, Komang Gede Veithzal Rivai Zainal Venusia A, M. Fajar Wahananto, Anang Wahyu Pamungkas, Rino Widyarso, Riza Wulandari , Esti Zesario Akbar, Rendy Zuhri, Syaefuddin