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All Journal Journal of Green Science and Technology Jurnal Health Sains Jurnal Teknik Sipil Cendekia (JTSC) Devotion: Journal of Research and Community Service Journal of Engineering and Applied Technology INJURITY: Journal of Interdisciplinary Studies Indonesian Journal of Advanced Research (IJAR) Equivalent: Jurnal Ilmiah Sosial Teknik Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Journal of Green Science and Technology
Nikko Rozy
Universitas Swadaya Gunung Jati
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Veterinary

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Productivity Analysis Of Supply Chain Management Performance On Building Construction For Time Efficiency (Case Study Of RSHS Bandung Project) Andriansyah, Andra; Saputra, Nendang; Anamy, Muhammad Zakaria; Rozy, Nikko
Equivalent: Jurnal Ilmiah Sosial Teknik Vol. 7 No. 1 (2025): Equivalent: Jurnal Ilmiah Sosial Teknik
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/jequi.v7i1.216

Abstract

This research can be a reference for other project management who want to implement supply chain management. Supply chain management is one of the important things in a construction project where the application of supply chain management will affect the success of a construction project both material management, type of work, and time schedule. Therefore, this study aims to reduce the risk of time losses and the effect of productivity performance on a project. By using a quantitative method that reviews the s-curve and distributes questionnaires, this study shows that the total deviation is 171.62 which results in an average deviation of 3.502 per week. Stating that the deviation results in a deviation of sure + and after conducting validity, reliability and satisfaction tests, the results show that supply chain management can accelerate and streamline time on building construction projects.
Analysis of the Application of Value Engineering in Building Project X Kuningan District Cahyani, Andhiny Gita; Rohaedi, Mochamad Daffa; Nurazizah, Fadia Lutfah; Rozy, Nikko
Indonesian Journal of Advanced Research Vol. 4 No. 7 (2025): July 2025
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v4i7.14977

Abstract

Construction project efficiency is the key to success amid budget pressures and cost inflation. Value Engineering (VE) is a systematic solution to balance cost, reliability, and project performance. Pareto analysis identified four main works for optimization: walls, frames, floors, and ceilings with cost/worth ratio >1. Alternative solutions included AAC/HEBEL walls, PVC sills, unpolished homogenius tile, and PVC ceiling. The implementation of Value Engineering resulted in significant savings in walls (38.63%), frames (24.21%), ceilings (46.62%), and floors (39.74%). The total savings reached Rp1.481.761.485,10 (38,52% of the initial cost), with Life Cycle Cost as the main consideration.
Analysis of Occupational Safety and Health Management System (SMK3) on Workers In Cikeruh Majalengka Bridge Construction Project Sutanto, Pachri; Pitaloka, Renata; Fatmala, Lia; Rozy, Nikko
Devotion : Journal of Research and Community Service Vol. 6 No. 1 (2025): Devotion: Journal of Community Research
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/devotion.v6i1.25411

Abstract

The implementation of safety and health (OSH) systems in the work environment is a crucial component for the running of a business entity, because the consequences of accidents can have a detrimental impact on the workforce and the institution. This study was conducted to evaluate how OHS affects the level of worker productivity. A quantitative approach is the method used by collecting primary data through distributing questionnaires to 35 workers at the Cikeruh Majalengka Bridge Construction Project. Data analysis was carried out using IBM SPSS 26.0 for Windows, by conducting an Instrument Test consisting of Validity Test and Reliability Test. The variables studied consisted of four independent variables: Planning (X1), Organization (X2), Actuating (X3), Controlling (X4) and one dependent variable, namely Worker Productivity (Y). The results showed that Planning has a positive effect on productivity with an average value of 1.98, Organization 2.0, Actuating 1.78, and Controlling 1.94. The four independent variables as a whole have an average value of 1.92 which indicates a positive influence on worker productivity on the project, because it is in the interval class 1.6 ≥ x ≤ 2.0. This proves that factors such as planning, organization, implementation, and supervision play a significant role in increasing worker productivity on the Majalengka Cikeruh Bridge Construction Project.
The Influence of Occupational Health and Safety and the Work Environment on Worker Productivity Rosita K, Dhea; Intan A, Syabikah; Alfatun J, Moch; Rozy, Nikko
Jurnal Health Sains Vol. 5 No. 12 (2024): Jurnal Health Sains
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jhs.v5i12.1337

Abstract

Occupational safety and health are very fundamental for companies, because the impact of work accidents is not only detrimental to workers, but also the company. The aim of this research is to determine how much influence Occupational Safety and Health and the Work Environment influence Worker Productivity. This research uses primary data, namely a questionnaire distributed to 55 PT Arteria Daya Mulya Cirebon. Data analysis methods use Instrument Tests including Validity Tests, Reliability Tests, Classical Assumption Tests including Normality Tests, Multicollinearity Tests, Regression Analysis Tests including Multiple Linear Regression Analysis, Determination Coefficients, and Hypothesis Tests including T Tests (partial) and F Tests (simultaneous) which was processed using the IBM SPSS version 23.0 for Windows application. The research results show that Occupational Health and Safety has a significant effect of 0.000 < 0.05 and the calculated t value > t table (9.991 > 0.1674), meaning that Ho is rejected and Ha is accepted. So it can be concluded that occupational health and safety variables have a positive and significant effect on worker productivity. Then the Work Environment has a positive and significant effect on Worker Productivity with a significance value of 0.000 < 0.05 and a calculated t value > t table (11.735 > 1.674), meaning that Ho is rejected and Ha is accepted. So it can be concluded that the Work Environment variable has a positive and significant effect on Worker Productivity. Occupational Health and Safety and the Work Environment together (simultaneously) have a significant positive effect on Worker Productivity as seen from the significance value of 0.000 < 0.05 and the calculated f value > f table (82.690 > 3.17), meaning that Ho is rejected and Ha accepted. So it can be concluded that the Occupational Health and Safety and Work Environment variables together have a positive and significant influence on Worker Productivity with an adjusted R square value of 76.1%.
Productivity Analysis Of Supply Chain Management Performance On Building Construction For Time Efficiency (Case Study Of RSHS Bandung Project) Andra Andriansyah; Nendang Saputra; Muhammad Zakaria Anamy; Nikko Rozy
Equivalent: Jurnal Ilmiah Sosial Teknik Vol. 7 No. 1 (2025): Equivalent: Jurnal Ilmiah Sosial Teknik
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/jequi.v7i1.216

Abstract

This research can be a reference for other project management who want to implement supply chain management. Supply chain management is one of the important things in a construction project where the application of supply chain management will affect the success of a construction project both material management, type of work, and time schedule. Therefore, this study aims to reduce the risk of time losses and the effect of productivity performance on a project. By using a quantitative method that reviews the s-curve and distributes questionnaires, this study shows that the total deviation is 171.62 which results in an average deviation of 3.502 per week. Stating that the deviation results in a deviation of sure + and after conducting validity, reliability and satisfaction tests, the results show that supply chain management can accelerate and streamline time on building construction projects.
“Analysis The Productivity Of Heavy Equipment Cut And Fill Work” (Case Study: Package 6th Leuwikeris Dam Project Tasikmalaya-Banjar) Yanto Yanto; Cornelia Gina Fransisca; Muhamad Decky Pambudi; Nikko Rozy
Interdiciplinary Journal and Hummanity (INJURITY) Vol. 4 No. 8 (2025): Injurity: Interdiciplinary Journal and Humanity
Publisher : Pusat Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58631/injurity.v4i8.1462

Abstract

This research examines the productivity of heavy equipment used in the Cut and Fill work at the Leuwikeris Dam Project in Tasikmalaya, Indonesia. The study highlights the importance of efficient resource utilization and the environmental and social impacts associated with dam construction. A time study method was employed to analyze productivity, focusing on various heavy equipment such as excavators, dump trucks, bulldozers, and vibratory rollers. The findings indicate that factors such as equipment breakdowns, weather conditions, and material supply delays significantly impact productivity. The results aim to inform civil engineering practices and improve the understanding of heavy construction equipment efficiency in development projects.
ANALISIS BIAYA DAN WAKTU MENGGUNAKAN TIME COST TRADE OFF (TCTO) DALAM RANGKA MENGEJAR WAKTU PELAKSANAAN (Studi Kasus: Proyek Pembangunan Rumah Sakit Islam Jakarta Pondok Kopi) Thesa Nurshela; Nikko Rozy
JURNAL TEKNIK SIPIL CENDEKIA (JTSC) Vol 7 No 2 (2026): May
Publisher : Departement of Civil Engineering, Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51988/jtsc.v7i2.522

Abstract

In a construction project, there are three crucial aspects to consider, namely time, cost, and quality. The implementation of the Jakarta Islamic Hospital Pondok Kopi construction project faces several obstacles, especially at the stage of foundation structure and concrete structure work. Based on observations at the location, it is estimated that the completion of the construction of the Jakarta Islamic Hospital Pondok Kopi will be delayed or not in accordance with the planned schedule. There are several options that can be used to speed up project activities, including increasing working hours (overtime), adding manpower, adding or changing tools, adding more effective work methods, and other options. Of the several available alternatives, this study will apply two alternatives, namely increasing working hours (overtime) and increasing labor using the Time Cost Trade Off (TCTO) method. The optimization alternative that has the most optimal or efficient total cost and duration is by adding 5 workers because the project duration becomes faster, even though there is an increase in cost, the addition is more optimal or efficient compared to other alternatives, as indicated by a time efficiency of 51,36% and a cost efficiency of -20,02%. This optimization result can be used as an acceleration option for the project party.
Comparative Analysis Of Implementation Plan Costs Between Daily Wages And Contract Wages In Building Construction Projects (Case Study Of Jakarta Islamic Hospital Pondok Kopi) Dwi Novitasari; Nikko Rozy
JURNAL TEKNIK SIPIL CENDEKIA (JTSC) Vol 7 No 3 (2026): Juli
Publisher : Departement of Civil Engineering, Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51988/jtsc.v7i3.532

Abstract

In this study, researchers reworked the RAB (Budget Plan) that was not previously obtained from the research site. The expected outcome of processing the RAB data is to identify which jobs have the greatest weight and require piecework wages. This is then compared to the RAP. Because of this simple point, errors still occur frequently in some projects, resulting in budget overruns. This daily and piecework wage system often occurs in projects. Therefore, the author wants to conduct an analysis of the comparative cost of the Jakarta Islamic Hospital Development Project Pondok Kopi, between the work analysis according to the Cost Budget Plan based on the results of the survey based on daily wages and the Cost Budget Plan based on the results of the survey based on piecework wages based on the Cost Budget Plan. Differences in wage systems significantly impact project cost efficiency. Daily wages tend to provide workers with income security, but they risk reducing productivity if there is no close supervision. Conversely, piecework wages can increase productivity due to the incentive to complete work more quickly, but they can potentially reduce quality if supervision is suboptimal. This research is relevant to the Jakarta Pondok Kopi project, where challenges such as tropical weather and material availability require an adaptive wage approach.
Analysis Of The Application Of Time Management In Building Projects With Critical Path Method (Cpm) And Earned Value Method (Evm) (Case Study: Jakarta Islamic Hospital Pondok Kopi) Nabila Maulidanisa; Nikko Rozy
JURNAL TEKNIK SIPIL CENDEKIA (JTSC) Vol 7 No 3 (2026): Juli
Publisher : Departement of Civil Engineering, Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51988/jtsc.v7i3.533

Abstract

This study analyzes the implementation of time management in construction projects using the Critical Path Method (CPM) and Earned Value Method (EVM) methods in the construction project of the Jakarta Islamic Hospital Pondok Kopi. This research is motivated by the importance of time control in project implementation to minimize delays. The methods used include work network analysis using CPM to determine the critical path and duration of the project, as well as time performance analysis using EVM through the parameters of Planned Value (PV), Earned Value (EV), Schedule Variance (SV), and Schedule Performance Index (SPI). The results of the CPM analysis show that the duration of the project completion is 274 days, faster than the duration of the plan on the S curve which is 287 days. However, the results of the EVM analysis show that the project time performance is delayed, which is shown by the Schedule Performance Index (SPI) value of 0.77061 and the Schedule Variance (SV) value of negative. This indicates that the actual progress of the project is lower compared to the plan that has been set. Thus, although the project has the potential to be completed faster in terms of planning based on CPM analysis, the actual conditions on the ground indicate that the project is delayed. Therefore, more optimal control is needed, especially on critical path activities, to improve project time performance.
Co-Authors Abdul Khalim Agus Gunawan Alfatun J, Moch Anamy, Muhammad Zakaria Andra Andriansyah Andriansyah, Andra Cahyani, Andhiny Gita Cornelia Gina Fransisca Dikdik Nur Fahmi Dwi Novitasari Faqih Ma’arif Fatmala, Lia Harun Usman Ghifarsyam Intan A, Syabikah Muhamad Decky Pambudi Muhammad Zakaria Anamy Nabila Maulidanisa Nendang Saputra Nopa Pahlawati Nurazizah, Fadia Lutfah Opi Tresna Hamdani Pahlawati, Nopa Pitaloka, Renata Prianto Wibowo Rohaedi, Mochamad Daffa Rosita K, Dhea Saihul Anwar Salman Alparis Saputra, Nendang Siti Masitoh Sutanto, Pachri Thesa Nurshela Yanto Yanto