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Analysis of Delays in Construction Time of the Banjarsari Water Gate Project, Sidoarjo District Using Critical Path Method Nopriyanto, Dwi Erry; Wulandari, Esti; Nugroho, Laksono Djoko
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 1 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i1.334

The Banjarsari sluice gate, located on the Sidoarjo district's shipping river, faces various challenges that can affect its performance. These challenges include sedimentation, damage to building structures, and decreased water quality due to domestic and industrial waste. The implementation of the Banjarsari Water Gate maintenance project, especially the floor work, experienced seepage at the bottom of the water gate floor, resulting in structural failure of the water gate building. CPM method duration planning is a recommendation in choosing from the many methods available, because there is a calculation of the earliest time the project starts, the latest time the project begins, the earliest time completed, and the latest time completed, so that the time lag of all activities can be known. Analyze the acceleration of work duration by adding workers to the work on the critical path. The purpose of this research is to analyze the length of time required by the CPM (Critical Path Method) method for the work of the Banjarsari floodgate. In this study, the time analysis uses the CPM (Critical Path Method) method and is assisted by Microsoft Project 2021 Software. The analysis results obtained work through the critical path, namely demolition work and cyclope concrete casting, and obtained the results of the duration of work on the Banjarsari floodgate work after crashing to 66 working days from the initial duration of 72 working days.

Analysis of Delays in the Construction Project of the Pumping House in the Sumenep District Using the Critical Path Method John, Jenodius Aldino; Wulandari, Esti; Nugroho, Laksono Djoko
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 1 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i1.335

Delays in construction projects pose significant challenges, particularly in remote areas like the Sumenep District. This research analyzed the pump house construction project delays using the Critical Path Method (CPM) to identify the primary factors causing delays, including material supply issues and labor shortages. A qualitative descriptive approach was employed, involving in-depth interviews with project stakeholders and analysis of project documents, including weekly reports and schedules. The findings indicated that the project experienced an average delay of two weeks, primarily due to delays in material supply from Surabaya and concurrent labor shortages caused by multiple simultaneous projects. To address these challenges, the study proposed solutions such as strengthening logistics coordination with local suppliers, increasing the workforce on critical tasks, and utilizing additional heavy equipment. The implications of this research highlight the importance of effective time and resource management in construction projects, particularly in remote locations. Applying the CPM method, this study identifies the root causes of delays and provides practical strategies to enhance project efficiency and reduce costs. This research contributes to the existing literature on construction management in Indonesia, emphasizing the need for adaptive approaches tailored to local conditions.

Comparative Analysis of Prestressed Girder Beam Method and Box Culvert on Terms of Construction Costs for Kedungpeluk Bridge Design Lutfi, Muchamad; Tjendani, Hanie Teki; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 1 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i1.336

The Kedungpeluk Bridge in Sidoarjo Regency collapsed in 2024 due to structural damage, prompting a need for efficient reconstruction methods. This study compared the cost efficiency and implementation time of two bridge designs—pre-stressed concrete beams and Box Culvert. The research used a quantitative approach to collect secondary data from project drawings, cost budget plans (RAB), and S-curves, alongside unstructured interviews with stakeholders. Findings revealed that the Box Culvert design was more cost-effective, requiring Rp. 1,440,254,544.83, compared to Rp. 1,912,436,195.15 for the pre-stressed concrete beams, resulting in a 24.69% cost savings. Moreover, construction with the Box Culvert design was completed in 10 weeks, 28.57% faster than the 14 weeks for the alternative design. These results highlight the Box Culvert as a superior choice for similar infrastructure projects, addressing urgent community needs for reliable transportation. The implications of this research extend to civil engineering practitioners and government agencies, providing a practical reference for future bridge designs that prioritize cost efficiency and timely implementation, thereby promoting enhanced connectivity and economic growth in the region. Further research is recommended to explore environmentally friendly designs and assess long-term performance in various contexts.

Projected Analysis of Fulfilling Pdam Clean Water Needs in Domestic Customers of Waginopo Village, Wangi-Wangi District, Wakatobi District Jamiludin, Jamiludin; Wulandari, Esti; Tjendani, Hanie Teki
Interdiciplinary Journal and Hummanity (INJURITY) Vol. 3 No. 5 (2024): INJURITY: Journal of Interdisciplinary Studies.
Publisher : Pusat Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58631/injurity.v3i5.206

Clean water is a very vital need for society, to meet the needs for drinking water, bathing, cooking, washing and including industrial needs. The existence of clean water in an area is very important considering the very dynamic activities of society. In its implementation, the drinking water supply system in Waginopo Village has not been able to run smoothly. In fact, according to a temporary survey that has been carried out, PDAM water only flows once every 2 days, once a week and the maximum flow time is only 12 hours. The aim of this research is to calculate the amount of clean water needed for the service area of Waginopo Village, Wangi-Wangi District, Wakatobi Regency until 2033. In this research, not only numerical data will be collected, but also information about what the community desires regarding the performance of the clean water distribution system, so this research study approach uses a combination of quantitative and qualitative approaches. From the results of the analysis it can be said that the total water demand of PDAM Wakatobi Regency for the Waginopo Village service area in 2033 is 867,894 m3/year. Meanwhile, based on water demand in 2024, it is 592,737 m3/year. So the calculation results from 2024 to 2033 have increased.

Analysis of Flood Discharge and Water Level of the Babon River in Semarang Fakhrurrozi, Muhamad; Wulandari, Esti; Djoko Nugroho, Laksono
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 10 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i10.284

This study aims to determine the toll rates desired by the people of Gresik Regency based on the value of Ability to Pay (ATP) and Willingness to Pay (WTP) on the Krian – Legundi – Bunder (KLB) Toll Road. Through traffic count surveys and Road Side Interviews (RSI) at toll gates and arterial roads, data on vehicle population, payment ability, and user preferences for existing toll rates were obtained. The analysis employed a Logit model to evaluate the relationship between the ATP and WTP values and their correlation with the current toll rates. The results revealed that both the WTP and ATP of the community were lower than the existing toll tariff. Specifically, the study found that the optimal toll rate for users would be Rp. 1,100/km, which is 26.96% lower than the current rate of Rp. 1,506/km. This adjustment not only aligns better with the financial capacities of the users but also presents an opportunity for revenue optimization. By lowering the toll rate, it is predicted that increased traffic volume could compensate for the reduced fee, ultimately benefiting both the toll operator and the community. In conclusion, establishing a toll rate that reflects user preferences is crucial for enhancing accessibility and ensuring sustainable revenue generation for infrastructure development.

Analysis of the Value of Ability to Pay & Willingness to Pay Toll Tariffs in the People of Gresik Regency Based on the Facilities and Infrastructure of the Krian – Legundi – Bunder Toll Road Brian V P, Andreas; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 10 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i10.285

This study aims to determine the toll rates desired by the people of Gresik Regency based on the value of Ability to Pay (ATP) and Willingness to Pay (WTP) on the Krian – Legundi – Bunder (KLB) Toll Road. Through traffic count surveys and Road Side Interviews (RSI) at toll gates and arterial roads, data on vehicle population, payment ability, and user preferences for existing toll rates were obtained. The analysis employed a Logit model to evaluate the relationship between the ATP and WTP values and their correlation with the current toll rates. The results revealed that both the WTP and ATP of the community were lower than the existing toll tariff. Specifically, the study found that the optimal toll rate for users would be Rp. 1,100/km, which is 26.96% lower than the current rate of Rp. 1,506/km. This adjustment not only aligns better with the financial capacities of the users but also presents an opportunity for revenue optimization. By lowering the toll rate, it is predicted that increased traffic volume could compensate for the reduced fee, ultimately benefiting both the toll operator and the community. In conclusion, establishing a toll rate that reflects user preferences is crucial for enhancing accessibility and ensuring sustainable revenue generation for infrastructure development.

Analysis of Factors Causing the Risk of Work Accidents in the Construction of the CWI-02 ITS Surabaya Package Building Atwin Suyitno, Dwi; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 11 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i11.310

Transportation is an important part that cannot be separated from human life, as it plays a crucial role in various aspects, including socio-cultural, economic, engineering, political, defense, and legal sectors. Roads are one of the primary means of transportation that significantly impact the development and progress of a region by facilitating the movement of goods, services, and people. The purpose of this study is to determine the performance of the Maliana - Bobonaro road transportation section, which serves as a vital route connecting key areas and supporting local economic growth. This study utilizes the Calculation Capacity Road method based on the PKJI 2023 (Indonesian Road Capacity Guidelines) to assess road performance and travel time. The results of the study indicate that the Maliana – Bobonaro road section demonstrates good performance, with a capacity (C) of 2735.85 smp/hour, a degree of saturation of 0.235 and 0.195, and a level of service categorized as A and B. These results suggest that the road operates efficiently with minimal congestion, ensuring smooth traffic flow and reducing travel time. However, continuous monitoring and periodic evaluations are essential to maintain this performance level, especially with potential future increases in traffic volume due to regional development. This study provides valuable insights for policymakers and transportation planners in improving road infrastructure and ensuring sustainable transportation systems.

Performance Index Analysis on the Construction of Probolinggo - Banyuwangi Toll Road Package 3 Sholikhah, Ummatus; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 11 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i11.311

This study analyzes the performance index of the Probolinggo-Banyuwangi Toll Road Package 3 construction project using the Earned Value Method (EVM) to evaluate time and cost performance. Infrastructure projects, particularly toll roads, play a vital role in enhancing regional connectivity and economic growth. However, large-scale construction projects frequently face challenges such as cost overruns and delays. The Earned Value Method provides a comprehensive framework for measuring project performance by comparing planned costs, actual expenditures, and completed work. This research employs key performance indicators, including Budgeted Cost of Work Scheduled (BCWS), Budgeted Cost of Work Performed (BCWP), and Actual Cost of Work Performed (ACWP), to determine the Schedule Performance Index (SPI) and Cost Performance Index (CPI). The findings reveal that the project experienced schedule delays, with an SPI of 0.93, indicating that work progress was behind the planned schedule. However, the project maintained cost efficiency, as shown by a CPI of 1.06, reflecting lower actual costs than budgeted. The study highlights the importance of continuous performance monitoring using EVM to identify potential risks, optimize resource allocation, and support timely decision-making. The results provide valuable insights for project managers to improve efficiency and ensure project success in large-scale infrastructure developments.

Road Performance Analysis in Maliana District, Bobonaro Regency, Timor Leste godinho, domingos; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 11 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i11.312

Transportation is an important part that cannot be separated from human life, as it plays a crucial role in various aspects, including socio-cultural, economic, engineering, political, defense, and legal sectors. Roads are one of the primary means of transportation that significantly impact the development and progress of a region by facilitating the movement of goods, services, and people. The purpose of this study is to determine the performance of the Maliana - Bobonaro road transportation section, which serves as a vital route connecting key areas and supporting local economic growth. This study utilizes the Calculation Capacity Road method based on the PKJI 2023 (Indonesian Road Capacity Guidelines) to assess road performance and travel time. The results of the study indicate that the Maliana – Bobonaro road section demonstrates good performance, with a capacity (C) of 2735.85 smp/hour, a degree of saturation of 0.235 and 0.195, and a level of service categorized as A and B. These results suggest that the road operates efficiently with minimal congestion, ensuring smooth traffic flow and reducing travel time. However, continuous monitoring and periodic evaluations are essential to maintain this performance level, especially with potential future increases in traffic volume due to regional development. This study provides valuable insights for policymakers and transportation planners in improving road infrastructure and ensuring sustainable transportation systems.

Cost Analysis of Wholesale Wage System and Work Efficiency in The Central Park Juanda Housing Construction Project - PT. Griyo Mapan Santoso Supriyanto, Yunaidi; Tjendani, Hanie Teki; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 2 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar

The cost analysis between the wholesale wage system and work efficiency has special significance in housing projects, such as in Central Park Juanda Housing by PT. The Scarlet Witch is a saint. Through a quantitative approach, this study also contributes to the construction management literature related to workforce management in the field. This study used a sample of 45 respondents consisting of construction workers in the Central Park Juanda housing project, including foremen, handymen, and other field workers. Respondent profiles included gender distribution (82% male), age (dominant 31-41 years), education (47% high school/vocational school), competency certification (58% have certificates), and work experience (dominant 11-15 years). The questionnaire data was tested for validity using the Pearson method with a significance level of 5% and all items were declared valid (rh ? 0.3). Reliability was tested with Cronbach's alpha, and all variables (X1 to Y) were declared reliable (? ? 0.6). The results showed that all independent variables (X1: Labor, X2: Wages, X3: Materials, and X4: Projects) had a negative influence on project efficiency (Y). However, only the variable X4 (Project State) had a significant effect with a significance value of 0.002 (< 0.05), while the other variables (X1, X2, and X3) were insignificant., then the data shown by the probability of significance of the ANOVA analysis was with a significance value of 0.021 < 0.05 thus Ho was rejected and Ha was accepted, meaning that simultaneously there was a significant influence. This shows that the state of the project plays an important role in influencing work efficiency, while labor, wholesale wages, and materials do not have a significant impact in the context of this study.

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