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Financial Feasibility Analysis By Utilizing Float Time On Profitability In High-Rise Building Construction Projects Mahardini, Hirdayanti Andina Raissha; Putra, I Nyoman Dita Pahang
Journal of Civil Engineering and Planning (JCEP) Vol. 5 No. 2 (2024)
Publisher : Program Studi Sarjana Teknik Sipil Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/jcep.v5i2.9296

Abstract

Construction projects face time risks, such as delays causing cost overruns, and cost risks, including cash flow bottlenecks hindering funding. Effective cash flow management is critical to ensure project profitability and success, measured through both physical and financial aspects. This study compares the optimal profits of projects without a down payment and with a 20% down payment, under float utilization rates of 0%, 25%, 50%, 75%, and 100%. Using Microsoft Project 2021 and the Precedence Diagram Method (PDM), critical path and float durations were analyzed to assess financial feasibility with Net Present Value (NPV), Benefit-Cost Ratio (BCR), and Return on Investment (ROI). Results show the most optimal cash flow without a down payment occurs at 50% float utilization, yielding an NPV of IDR 2,121,722,719, a BCR of 1.0698, and an ROI of 6.98%. For a 20% down payment, optimal results occur at 25% float utilization, with an NPV of IDR 1,998,159,242, a BCR of 1.0568, and an ROI of 5.68%. These findings emphasize the importance of strategic cash flow planning to optimize financial performance in construction projects.
Perbandingan Produktivitas Excavator dan Dump Truk Sebelum dan Setelah Hujan Anggraeny, Anggi Dwi; Muzdhalifa, Rencany Maura; Putra, I Nyoman Dita Pahang; Velantika, Griselda Junianda
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.846

Abstract

The construction project of the JLS Lot 3 Pantai Serang - Sumbersih is a concrete example of the government's efforts to enhance connectivity and infrastructure development in Indonesia. Heavy equipment such as excavators and dump trucks play a crucial role in enhancing efficiency and productivity in this project. Infrastructure development projects often encounter obstacles such as delays and high operational costs. Rain is one of the causes of those obstacles. One way to get a clear picture of the impact of rain is to conduct a comparative analysis of heavy equipment productivity before and after the rain. Evaluation of the decrease in productivity is necessary so that mitigation measures can be taken to minimize its impact on the project. This study aims to analyze and compare the productivity of excavators and dump trucks under conditions before and after rain on the JLS Lot 3 project. This study uses a quantitative method by analyzing primary data obtained through observation of the cycle time of excavators and dump trucks before and after rain in the field. The excavator's productivity before the rain was higher, at 1506.27 m3/day, compared to after the rain, at 854.33 m3/day. The productivity of the dump truck before the rain was also higher, at 259.60 m3/day, compared to after the rain, at 138.67 m3/day. The cause of the difference in productivity between the excavator and dump truck before and after the rain is the muddy and waterlogged field conditions, which lead to changes in the excavator's digging speed, per-cycle production, and the dump truck's rate while moving from the excavation site to the disposal site.
Kepadatan Tanah Timbunan Menggunakan Metode Sand cone Pada Proyek Pembangunan Jalan Lintas Selatan (JLS) Lot 2 Bululawang – Sidomulyo – Tambakrejo Mahajana, Adam Niestera; Salim, Abdurrosid; Putra, I Nyoman Dita Pahang
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.849

Abstract

The construction of roads plays a crucial role in supporting public mobility and economic growth. The development of the South Java Road (JLS) is one of the initiatives designed to enhance connectivity in the southern region of Java Island. On the Bululawang – Sidomulyo – Tambakrejo segment, the quality of road construction work is a top priority to ensure safety, durability, and transportation efficiency. The development of JLS is strongly aligned with the Sustainable Development Goals (SDGs), particularly Goal 17, Partnerships for the Goals, involving various parties in ensuring the success of the project. The embankment soil work is a critical aspect, as the compaction of embankment soil directly influences the stability and load-bearing capacity of the road structure. The research methodology started with a literature review, followed by secondary data collection, field observations, and compaction testing using quartz sand and a Speedy Moisture Tester to verify moisture content. The results of the sand cone test at STA 11+725 R, STA 11+750 L, and STA 11+775 R indicate that all points met the minimum compaction criterion of 95%, with field compaction ranging from 97.46% to 98.24% of the maximum dry density (MDD). Although the moisture content at STA 11+725 R was slightly outside the acceptable range, the other points met the allowable moisture content criteria. The testing was conducted in accordance with SNI 03-2828-1992 and SNI 1742-2008, ensuring that the embankment soil compaction quality meets the technical standards.
Analysis of Domestic Component Level (TKDN) and Company Benefit Weight (BMP) in Construction Projects Dwi Lutfil Khakim; I Nyoman Dita Pahang Putra
International Journal of Mechanical, Electrical and Civil Engineering Vol. 1 No. 3 (2024): July : International Journal of Mechanical, Electrical and Civil Engineering
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmecie.v1i3.19

Abstract

In the world of construction projects, good project management is required, including the use of domestic products. The government encourages the use of domestic products through the program to increase the use of domestic production (P3DN). The amount of domestic content in commodities, services, and the combination of products and services can be used to measure the use of domestic products. This quantity is called the Domestic Component Level (TKDN). Company Benefit Weight (BMP) is an award given to industrial companies that invest and produce in Indonesia. This research aims to calculate the amount of TKDN and BMP for the Muhammadiyah Ahmad Dahlan Kediri Hospital construction project. With reference to the Ministry of Industry of the Republic of Indonesia's Regulation No. 16 of 2011 regarding Provisions and Procedures for Calculating Domestic Component Levels, the research employs a descriptive quantitative methodology to compute and analyze Domestic Content Levels (TKDN). The results of analytical calculations show that the TKDN percentage is 69.65% and the BMP percentage is 3%. This research concluded that the total TKDN and BMP was 72.65%, thus meeting the minimum limit for the sum of TKDN and BMP of 40%.
Comparison Of The S Curve With The CPM Method In Analyzing Project Scheduling Alfonsus Fung Abimanyu Wicaksono; I Nyoman Dita Pahang Putra
International Journal of Industrial Innovation and Mechanical Engineering Vol. 1 No. 2 (2024): May: International Journal of Industrial Innovation and Mechanical Engineering
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijiime.v1i2.18

Abstract

Project management is managing projects by considering all aspects of construction projects. A project must run according to plan and can be completed on time, so planning is needed before a project runs; scheduling must be considered. Scheduling is an important step in determining the exact duration and sequence for each activity in the project to create a logically structured schedule that can be implemented realistically. Many methods can be applied in project scheduling, such as S Curve and CPM (Critical Path Method). The use of different scheduling methods is considered to affect the final result of scheduling. Therefore, it is necessary to analyze the two methods. The analysis was carried out by comparing the critical trajectory, duration, and cost of structural work on the Kediri Regency Stadium Design and Build Project produced by the two methods so that it can be concluded which method is more efficient. The results showed differences in critical trajectories in the S curve and the CPM methods. In addition, the difference in duration is obtained; the S curve method requires a work duration of 140 days with a cost of Rp 48,041,965,577.96. Meanwhile, the CPM method requires a work duration of 131 days at a cost of Rp 47,535,997,308.05. Based on the results, the CPM method is superior in terms of time and cost.
Analysis Of Labor Qualifications Using The Resource Leveling Method On The Main Structure Work Of Multi-Story Buildings Amelia Indah Faradilla; I Nyoman Dita Pahang Putra
International Journal of Mechanical, Industrial and Control Systems Engineering Vol. 1 No. 2 (2024): June: IJMICSE: International Journal of Mechanical, Industrial and Control Syst
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmicse.v1i2.21

Abstract

Construction projects are related to infrastructure development in Indonesia, which is an important foundation for economic growth by supporting mobility, trade, and connectivity between regions. Infrastructure development also supports the utilization of labor resources in Indonesia. This research aims to analyze the availability of labor in a construction project. The Resource Leveling method is used to level the labor needs in the project. The results showed that there was an allocation of labor that exceeded the maximum daily availability before equalization. The initial allocation based on qualifications showed that the maximum number of workers consisted of 2 foremen, 1 head carpenter, 1 head ironworker, 1 head mason, 5 carpenters, 5 ironworkers, 1 mason, and 13 workers. After equalizing the workforce, the maximum number of workers required is 1 foreman, 1 head carpenter, 1 head ironworker, 1 head mason, 4 carpenters, 4 ironworkers, 1 mason, and 13 workers. This research emphasizes the importance of workforce equalization to avoid over-allocation and ensure efficiency in construction projects.
Analisis Produktivitas Tower Crane pada Pembangunan Gedung Gereja Kemah Tabernakel Pantai Indah Kapuk 2 Haholongan M, Aris Pistar; Putra, I Nyoman Dita Pahang
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 7 No. 3 (2025): Ranah Research : Journal Of Multidisciplinary Research and Development
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v7i3.1583

Abstract

The implementation of project work often encounters obstacles, with delays in time being the most common issue. The use of heavy equipment is one of the factors that helps accelerate the project execution to align with the project plan. This study aims to compare the productivity of tower crane on site with the produtivity based on specification. In this research, two types of tower cranes were used, namely the Potain MC 465 and the Potain MC 310 K12. The study was conducted over 20 days, observing the volume of materials transported and the cycle time required to lift the materials. The results of the study show that the average productivity of the Potain MC 465 tower crane on-site is 11,135.492 kg/hour, while the specification indicates 12,286.752 kg/hour. For the Potain MC 310 K12 tower crane, the on-site productivity is recorded at 8,506.263 kg/hour, and 9,197.890 kg/hour according to the specifications. The difference in productivity between the actual site conditions and specifications reflects a decrease in equipment performance, with a percentage reduction of 9.37% for Potain MC 465 and 7.519% for Potain MC 310 K12. This decrease in productivity is caused by the difference in cycle time observed on-site compared to the time specified in the equipment specifications. The average cycle time for Potain MC 465 on-site is 3.256 hours, while the specification indicates 2.961 hours. For Potain MC 310 K12, the cycle time on-site is 3.948 hours, while the specification is 3.658 hours. The difference in cycle time between actual site conditions and specifications shows a reduction of 9.96% for Potain MC 465 and 7.93% for Potain MC 310 K12.
Comparative Analysis of Crawler Crane Productivity in Girder Erection: A Theoretical Study and Direct Observation Bawana, Massayu Sekar; Puspita, Milinda Nur Indah; Putra, I Nyoman Dita Pahang
CIVED Vol. 12 No. 1 (2025): March 2025
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v12i1.698

Abstract

Every construction project, in general, has a specific and systematic method implementation program, such as the utilization of heavy equipment in girder erection work. This focus is selected based on the high technical complexity of girder erection work, so the productivity of heavy equipment greatly affects the work's success. The aim is to analyze the suitability between theoretical calculation of crawler crane productivity and direct observations in girder erection work and identify the factors that cause the productivity difference. This study combines the theoretical calculations and direct observations to evaluate the productivity of crawler cranes in girder erection work. Based on theory, the method of calculating crane productivity is done by analyzing the operating cycle time and productivity of crawler cranes. With the direct observations method, actual data is taken in the field, which is then calculated as the result of its productivity. From the results of this study, it is found that the results of crawler crane productivity in direct observation in the field have a higher productivity value compared to the productivity value in theoretical calculations, namely 1.51 units/hour, while in theoretical calculations, the productivity value is 1.060 units/hour. The difference in value is caused by several factors in the field, such as weather conditions, operational obstacles, and the operator's efficiency.
Analysis of Potential Work Hazard Risk in the Development of the Road Project Using the HIRARC and FTA Methods Manurung, Liza Olivia; Putra, I Nyoman Dita Pahang; Widowati, Elok Dewi
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.417

Abstract

Risk refers to a situation with potential loss or the chance of a loss. Every stage in the construction process inevitably carries potential risk hazards that can threaten the safety of workers, the environment, and the surrounding community. Therefore, a study was conducted to analyse possible risks during mobilising heavy equipment and material vehicles, excavation and embankment work, and blasting work in the X Road construction project.  This study employed two methods for risk analysis. The first method involved identifying types of work-related accidents using the HIRARC approach, which included distributing questionnaires to assess each variable's likelihood and severity levels to determine the most significant risk. Then, control measures were applied to the identified risks. After implementing the control measures, a risk reassessment was conducted to assess the level of risk post-control. The identification revealed one dominant variable: heavy equipment overturning from a height. Thus, the analysis continued using the second FTA method to determine the causal factors influencing the risk. The risk was caused by three main factors: human, environmental, and managerial factors, and ten basic events leading to the risk were identified.
Efficiency Analysis of the Combination of Heavy Equipment Use in Excavation and Landfill Work in Road Construction Projects Hadianto, Usman; Putra, I Nyoman Dita Pahang
Physical Sciences, Life Science and Engineering Vol. 2 No. 3 (2025): June
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/pslse.v2i3.438

Abstract

An efficient heavy equipment management system is needed to complete a earthwork on time. This study aims to analyze the productivity and efficiency of the combination of heavy equipment used in excavation and heap work. Heavy equipment productivity is calculated based on cycle time in the field and its needs are calculated based on the volume of the weekly plan. After that, an efficient combination of heavy equipment planning is carried out for excavation and heaping work. The method of calculating heavy equipment needs uses a theoretical approach, with cycle time adjustments based on operational conditions in the field. Efficiency analysis and heavy equipment selection are carried out based on the idle time of the smallest heavy equipment. The Optimal cut-fill Pairing and Sequencing (OPS) method is used to create a scheme of excavation and heaping work. The results of the analysis showed that the most efficient combination of heavy equipment used in excavation work of 14,467.66 BCM every week was 4 units of Kobelco PC 200 excavators, 2 units of Kobelco SK 330 excavators, and 10 units of Hino 500 dump trucks. Meanwhile, in the backfill work of 5,423.96 CCM every week, 1 unit of Komatsu D68ESS bulldozer, 1 unit of Sakai SV512TF sheepfoot roller, and 1 unit of Sakai vibro roller SV512TF are needed. This combination is chosen based on the value of the smallest idle time. With proper planning, high work efficiency, operational cost savings, and project completion are achieved according to the set schedule
Co-Authors Adibah Nurul Yunisya Afif, Syahril Nur Khusna Ahmed, Suliman Badawi Alam, Muhammad Miftakhul Alfonsus Fung Abimanyu Wicaksono Amala, Aprilia Suci Amelia Indah Faradilla Anggraeny, Anggi Dwi Anna Rumintang Anwar, Nadjadji Aprilia Regita Tri Cahyani Asyari, Saidatul Alfena Putri Awati, Mawinda Oktrify Bagas Andrian Permana Bambang Trigunarsyah Bambang Trigunarsyah, Bambang Bangun Muljo Sukojo, Bangun Muljo Bawana, Massayu Sekar Budi, Fakhruddin Prasetya Chakim, Ahmad Ibnul Christabella, Cynthia Cielly Christiono Utomo Dewanty, Maharani Putri Dewi, Risda Yasinta Diyasa, I Gede Susrama Mas Dwi Lutfil Khakim Eka Aprillia Erma Suryani Fadillah, Naufal Luthfi Fandini, Reina Maulidya Fatimah, Alifah Siti Hadianto, Usman Haholongan M, Aris Pistar Halim, Ismail Hidayatul Ulumiya I Made Merdana Ilham Arista Harahap Jagad, Sulthanul Auliya Junianda Velantika, Griselda Mahajana, Adam Niestera Mahardini, Hirdayanti Andina Raissha Mahrusah, Safira Manurung, Liza Olivia Maura Muzdhalifa, Rencany Mei Lutfi Yudhitasari Meylinda Sabrinawati Mitasari, Agusvivia Mudjahidin Muttaqin, Muh. Darul Muzaffar, Risal Muzdhalifa, Rencany Maura Natasya, Dininda Nia Dwi Puspitasari Ningtyas, Diah Kurniawati nur hanifah eka putri Panjaitan, Nita Jesika Pebria, Shinta Amyrul Pinky Febrilla Carienta Putri Prasasto, Adi Radityo Prasetyo, Aditya Rachmad Puspita, Milinda Nur Indah Putra, Moch. Maulana Kurnianda Saputra Putri, Ardelia Dewani Putri, Azhahra Divia Rahayu, Jatiningrum Rifky, Fariz Robby Soetanto Romadhoni, Firda Amalia Putri Salim, Abdurrosid Salsabila Aulia Ayu Lestari Putri Ghozali Sampurno, Ilham Ade Widya Santi Dwi Rahmawati Servanty, Izmanaya Avril Setiawan, Nanang Sianturi, Niel Tamsoju Siska Ayu Aprilia Yusuf Stephanie Almeyda Supriyono, Auliyah Shabirah Utami, Imanda Prasetya Velantika, Griselda Junianda Wardana, Zahra Ramadhani Widowati, Elok Dewi Yehezkiel Rivaldo Zetta Rasullia Kamandang