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All Journal Jurnal Teknik Sipil SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Civil and Environmental Science Journal (CIVENSE) Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Spektrum Sipil Journal La Multiapp Rengganis Jurnal Pengabdian Masyarakat Prosiding Seminar Nasional Teknik Sipil UMS International Journal of Science and Environment
Hafiz Hamdani
Program Studi Teknik Sipil , Fakultas Teknik Sipil, Universitas Muhammadiyah Mataram
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Journal : International Journal of Science and Environment

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Study of scheduling DPRD building of North Lombok Regency using BIM 5D with Tekla Structural software Toriqurrahman, Toriqurrahman; Hamdani, Hafiz; Fitrayudha, Adryan
International Journal of Science and Environment (IJSE) Vol. 5 No. 3 (2025): August 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i3.174

Abstract

The Lombok Utara Regency DPRD Building Construction Project is a multi-story building construction project using conventional scheduling methods with an S-curve. In accordance with Government Regulation No. 16 of 2021 on the implementation regulations of Law No. 28 of 2002 on building construction, which mandates the use of BIM for medium and high-rise buildings. This study aims to investigate the use of BIM through Tekla Structures software in planning project scheduling based on Detailed Engineering Design (DED) data. The research methodology begins with the collection of relevant references and shop drawing data. Using the obtained data, a 3D model can be created using Tekla Structures 2025 software, followed by scheduling tasks using Tekla Task Manager. The advantages of scheduling using Tekla Structures include the ability to create detailed models and facilitate scheduling through its available features, which display visualizations of each stage of progress. Compared to conventional scheduling using an S-curve, Tekla Structures provides accurate information through the visualizations it displays. The scheduling results for the construction project of the Lombok Utara Regency DPRD Building using the S-curve required 139 calendar days, while using Tekla Structures software required 111 calendar days. This study demonstrates that BIM technology can significantly enhance construction project efficiency.
A Comparative Study Of The Direct Appointment Process For Construction Service Providers Under Presidential Decree No. 16 Of 2018 And Presidential Decree No. 12 Of 2021 (Case Study: Gunung Rajak Village Library Construction Project) Yakup, Ilham; Hamdani, Hafiz; Fariyadin, Adiman
International Journal of Science and Environment (IJSE) Vol. 5 No. 3 (2025): August 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i3.175

Abstract

Construction work is an important part of economic growth. Procurement of construction goods and services is one of the factors for successful development. One method used in procurement of construction services is direct appointment. Based on this, the government issued Presidential Regulation No. 16 of 2021 and Presidential Regulation No. 12 of 2021 concerning procurement of construction goods and services. The purpose of this study is to determine the stages of the direct appointment process and to determine the impact of changes in presidential regulations on the process of direct appointment of construction service providers. Thus, it is hoped that it can provide policy recommendations that can increase the effectiveness of construction service procurement. The research method uses quantitative descriptive research. The sampling technique uses purposive sampling, with data taken from the Gunung Rajak Village Library Building Construction project and questionnaires distributed to service providers, service providers, and the Gung Rajak village community who understand service procurement. The data processing is descriptive and the questionnaire data processing uses a Likert Scale. The results of this study are that the process of direct appointment activities in the Gunung Rajak village library building construction project was carried out well and structured. Then the results of the questionnaire analysis with a Likert Scale showed the percentage value of the respondents' attitudes above 80%, with a small standard deviation value, namely (between 0.626 - 0.484), and an average Likert scale value of 4. These results indicate that Presidential Regulation No. 12 of 2021 is considered better in the process of direct appointment of construction service providers compared to Presidential Regulation No. 16 of 2018.
Effect of Coarse Aggregate Dimensional Variation On The Compressive Strength of Concrete Oktavian, Yogika; Hamdani, Hafiz; Fitrayudha, Adryan
International Journal of Science and Environment (IJSE) Vol. 5 No. 3 (2025): August 2025
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v5i3.212

Abstract

In the world of construction, concrete has a very important function as the main material due to its role in maintaining the strength and stability of the structure. This study aims to evaluate the effect of coarse aggregate size variations on the compressive strength of concrete and determine the most suitable size for use. The use of coarse aggregates is focused on granules that are retained on 3/4-inch and 3/8-inch sieves. The results showed that concrete with coarse aggregate retained in a 3/8 inch sieve had a higher compressive strength than 3/4 inch aggregate. At 3 days of age, the average compressive strength value reached 12,078 MPa for 3/8 inch coarse aggregate and 10,587 MPa for 3/4 inch aggregate. This difference continued at the 28-day lifetime compressive strength (the result of the 1971 PBI conversion), which was with an average value of 30,296 MPa for a 3/8 inch aggregate and 26,469 MPa for a 3/4 inch aggregate. This difference is due to a tighter distribution of patricles, reduced pore volume, and more optimal bonding of cement paste and aggregate. Therefore, the selection of coarse aggregate sizes needs to be adjusted to the purpose of construction.
Co-Authors Abdul Kadir Jaelani Adryan Fitrayudha Agustini Ernawati Ahmad Taufiq Hidayat Ahmad Zarkasi Akhsae, I Gede Anaga Akmaluddin Akmaluddin Amaelisa, Viara Anwar Efendy Ari Ramadhan Hidayat Artansyah, M. Tunso Sapta Aulia Muttaqin Chairil Anhar Erni Yustissiani Fariyadin, M. Ruslin Anwar, Indradi Wijatmiko, Adiman Farizwan, Jihan Feri Irawan Fitrayuda, Adryan Hady Rasikhun Hariyadi, Hariyadi Haryadi, Febrian Ekasapta Heni Pujiastuti Intan Novianti Isfanari Isfanari Isfanari Isfanari Isfanari Lalu Lunk Ryanata Putra M. Sidik Maya Saridewi Pascanawati Muhammad Basir Muhammad Khalis Ilmi Muhammad Khalis Ilmi Ni Nyoman Kencanawati Nura Safitri Nurul Hidayati Nurul Hidayati Oktavian, Yogika Partono, Agus Pascanawati, Maya Saridewi Pratama, Khendy Marsha Duta Purwoko, Agus Puteri Samengasbumi, Ringgi putri, amanda Rajabi Mubarak Ramadhan Hidayat, Ari Rini Lestari Rukayah Rukayah Samengasbumi, Ringgi Puteri Serdian Eska Cahya Solly Aryza Sukuryadi Sukuryadi, Sukuryadi Suwahip Suwahip Swahip Swahip, Swahip Titik Wahyuningsih Toriqurrahman, Toriqurrahman Toyyib, Mukhtar Ubaidillah, Aji Syailendra Yakup, Ilham