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All Journal Journal of Social Research Jurnal Teknik dan Science (JTS) Jurnal Abdi Masyarakat Multidisiplin Cerdika: Jurnal Ilmiah Indonesia
Rifaldi Adi Saputra
Universitas Dian Nusantara
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Health Professions Industrial & Manufacturing Engineering Public Health Social Sciences

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Penerapan Building Information Modeling (BIM) Dalam Estimasi Quantity Take Off Material Pekerjaan Struktural Pada Pembangunan Gedung Kondominium Hotel 8 Lantai Heri Permana; Rifaldi Adi Saputra; Alizar Alizar
Cerdika: Jurnal Ilmiah Indonesia Vol. 5 No. 2 (2025): Cerdika: Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v5i2.2533

Abstract

Penelitian ini bertujuan untuk mengkaji penerapan Building Information Modeling (BIM) dalam proses perhitungan Quantity Take Off (QTO) pada konstruksi struktur bangunan bertingkat, serta mengidentifikasi manfaat yang diperoleh dari penggunaan BIM. Jenis penelitian yang digunakan adalah penelitian kuantitatif dengan pendekatan studi kasus. Populasi dalam penelitian ini adalah proyek konstruksi bangunan bertingkat yang menggunakan metode BIM, dengan sampel diambil dari beberapa proyek yang relevan. Teknik pengumpulan data dilakukan melalui observasi, wawancara, dan analisis dokumen. Data yang diperoleh dianalisis menggunakan metode komparatif untuk membandingkan hasil perhitungan QTO antara metode BIM dan metode konvensional. Hasil analisis menunjukkan bahwa penerapan BIM dalam proses perhitungan QTO memberikan keunggulan substansial dalam hal akurasi dan efisiensi. Terjadi selisih hasil perhitungan QTO antara metode BIM dan metode konvensional, di mana item volume beton menunjukkan selisih terbesar sebesar 7,24% pada beton pelat lantai 2, dan volume pembesian memiliki selisih terbesar sebesar 9,87% pada pembesian pelat lantai 3. Penerapan BIM dalam perhitungan QTO meningkatkan efisiensi dan akurasi estimasi biaya, serta mengoptimalkan alokasi sumber daya dan mengurangi potensi kesalahan perhitungan. Hasil penelitian ini memberikan implikasi penting bagi industri jasa konstruksi, terutama dalam meningkatkan kualitas perencanaan dan pelaksanaan proyek konstruksi melalui teknologi BIM.
Working Method of Column Casting In Residential House Construction Project at Jl. Martimbang No.2 Rifaldi Adi Saputra; Agung Sakti Meldian; Lutfi Hanafi; Aep Saepuloh
Jurnal Teknik dan Science Vol. 4 No. 2 (2025): Juni : Jurnal Teknik dan Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jts.v4i2.2227

Abstract

Column work is one of the important stages in constructing a residential house structure, functioning as the main element supporting the load. In the house construction project at Jalan Martimbang No. 2, South Jakarta, the column implementation method is designed to prioritize the accuracy, strength, and durability of the structure. The stages of work include material preparation, formwork manufacture, assembly and installation of reinforcement, and concrete casting according to the established technical specifications. The entire process is carried out by paying attention to quality standards and work safety procedures, as well as considering the conditions of the surrounding environment. With a systematic approach and the use of quality materials, it is expected that the column structures will be able to support the building optimally and meet the planned lifespan of the building.
Calculation of Steel Reinforcement Needs for Beams and Prestressed Beams: Case Study on a Residential Project in South Jakarta Rifaldi Adi Saputra; Agung Sakti Meldian; Riris Setiyowati; Arman Jayadi
Jurnal Teknik dan Science Vol. 4 No. 2 (2025): Juni : Jurnal Teknik dan Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jts.v4i2.2228

Abstract

This study aims to analyze the need for reinforcement in conventional and prestressed beams in a residential project in South Jakarta. A quantitative descriptive approach is used, allowing for the systematic and measurable presentation of numerical data. Data were collected through direct field surveys, focusing on the analysis of work execution methods and the calculation of steel reinforcement requirements, particularly for ground floor structural elements. The case study was conducted on a conventional beam of type As 4' ; E - I with a span of 22.40 meters, which resulted in an iron demand volume of 991.77 kg for 25 mm diameter and 472.37 kg for 13 mm diameter. Meanwhile, for the prestressed beam As J; 3 - 8 with a cross-sectional size of 400 x 500 mm and a span of 14.30 meters, an iron requirement of 526.96 kg for a diameter of 22 mm and 295.00 kg for a diameter of 13 mm was obtained. The results of this study provide a detailed estimation of the material requirements for reinforcing the residential structure, which can serve as a reference for planning and controlling construction costs.
Planning of Implementation Schedules using CPM and PERT Methods in The Office Construction Project of Dipatiunus Tangerang Banten Khumaedi; Rifaldi Adi Saputra
Journal of Social Research Vol. 4 No. 5 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i5.2521

Abstract

Construction delays remain a recurring issue in infrastructure development in Indonesia due to inadequate scheduling and time mismanagement. This study investigates time optimization in the Dipati Unus Office construction project in Tangerang, Banten, by applying the Critical Path Method (CPM) and the Program Evaluation and Review Technique (PERT). The objective is to analyze and compare the scheduling effectiveness of both methods to minimize delays and identify critical work activities. This research adopts a case study approach using primary data from field observations and interviews, and secondary data from project documentation such as S-curves, daily reports, and schedules. Data were analyzed using Microsoft Project 2024 to identify critical paths and calculate project durations. The CPM analysis revealed 32 critical tasks with a total duration of 97 days, while PERT produced a shorter estimated duration of 90 days with a 54% probability of on-time completion. The findings demonstrate that both methods are effective for time management, but PERT offers more flexibility under uncertainty. The study implies that integrating CPM and PERT with digital planning tools can significantly improve project scheduling accuracy and execution efficiency. These insights can support future planning strategies in medium-scale construction projects.
Sosialisasi Inovasi Beton Ramah Lingkungan Berbasis Tempurung Kelapa sebagai Substitusi Agregat Kasar Rifaldi Adi Saputra; Era Agita Kabdiyono; Agung Sakti Meldian; Stevi Cahyani; Yayo Hardiansah; Galang Romadlon; Hariyadi Hariyadi
 Jurnal Abdi Masyarakat Multidisiplin Vol. 5 No. 2 (2026): Agustus: JURNAL ABDI MASYARAKAT MULTIDISIPLIN
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jammu.v5i2.2798

Abstract

The increasing use of concrete in infrastructure development has led to a growing demand for natural aggregates, particularly gravel as coarse aggregate. This condition requires the introduction of environmentally friendly alternative materials based on local resources. Coconut shell is an organic waste commonly found in communities, yet its practical use as a construction material remains limited. This community service activity aims to improve participants’ knowledge and basic skills in utilizing coconut shell as a substitute for coarse aggregate in environmentally friendly concrete mixtures. This study employed a descriptive qualitative method through socialization, demonstration, simple practice, observation, documentation, discussion, and evaluation of participants’ understanding. The data were analyzed descriptively to explain the implementation process, participants’ responses, and changes in their understanding of coconut shell waste utilization. The results show that participants gained knowledge about the concept of green concrete, the function of coarse aggregate in concrete mixtures, the initial processing stages of coconut shell, and the potential of local waste as an alternative material for simple construction applications. The implication of this activity is the improvement of community awareness regarding waste utilization and the importance of sustainable construction materials. The originality of this activity lies in its educational and practical approach to introducing coconut shell as a coarse aggregate substitute through direct socialization and hands-on practice with the community.
Co-Authors Aep Saepuloh Agung Sakti Meldian Alizar Alizar Era Agita Kabdiyono Galang Romadlon Hariyadi Hariyadi Heri Permana Jayady, Arman Khumaedi Lutfi Hanafi Riris Setiyowati Stevi Cahyani Yayo Hardiansah