Maharani, Mentari Putri
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KOMPARASI ANALISIS BANGUNAN PENGAMAN LERENG MENGGUNAKAN METODE LOAD RESISTANCE FACTOR DESIGN DAN ALLOWABLE STRESS DESIGN Harjanto, Furqaan; Rofiyantama, Dega; Maharani, Mentari Putri
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 1 (2025): JURNAL TEKNIK SIPIL DAN ARSITEKTUR
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i1.4366

Abstract

Retaining walls are important structures in civil construction used to resist soil and water pressure. Two common methods used for retaining wall analysis are the Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD) methods. LRFD is based on the principle of probabilistic balance and considers an explicit safety factor to ensure that the capacity of the structure is greater than the loads that may occur, while ASD is based on the principle that the stresses acting on the structure should not exceed the allowable stresses for the material and is simpler than the LRFD method, but does not consider the safety factor explicitly and does not account for uncertainties in materials, loads and analysis. With the different approaches in LRFD and ASD analysis, this study aims to compare the analysis results with LRFD and ASD approaches in the case of a secant pile-type retaining wall on the slope of river X where the initial analysis used the ASD approach. Secondary data in the form of soil data and river slope cross sections were obtained from the previous planning consultant, then the analysis was carried out with GEO5 software. The initial model was created first with the same parameters as the previous planning in order to provide the same penetration, displacement and internal force requirements as the planning consultant. The same model in the analysis results will be used as an analysis model for the LRFD approach and the analysis results in the LRFD model will be compared with the analysis model in the ASD approach. Based on the results of the LRFD analysis on the Strength boundary condition, it was found that the LRFD method gave a penetration depth 21.7% greater than ASD, moment force 40% greater than ASD and shear force 7.8% greater than ASD. A more detailed approach needs to be carried out on other boundary conditions such as Service and Extreme in order to provide more optimal comparison results
KOMPARASI ANALISIS BANGUNAN PENGAMAN LERENG MENGGUNAKAN METODE LOAD RESISTANCE FACTOR DESIGN DAN ALLOWABLE STRESS DESIGN Harjanto, Furqaan; Rofiyantama, Dega; Maharani, Mentari Putri
Jurnal Teknik Sipil dan Arsitektur Vol. 30 No. 1 (2025): JURNAL TEKNIK SIPIL DAN ARSITEKTUR
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i1.4366

Abstract

Retaining walls are important structures in civil construction used to resist soil and water pressure. Two common methods used for retaining wall analysis are the Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD) methods. LRFD is based on the principle of probabilistic balance and considers an explicit safety factor to ensure that the capacity of the structure is greater than the loads that may occur, while ASD is based on the principle that the stresses acting on the structure should not exceed the allowable stresses for the material and is simpler than the LRFD method, but does not consider the safety factor explicitly and does not account for uncertainties in materials, loads and analysis. With the different approaches in LRFD and ASD analysis, this study aims to compare the analysis results with LRFD and ASD approaches in the case of a secant pile-type retaining wall on the slope of river X where the initial analysis used the ASD approach. Secondary data in the form of soil data and river slope cross sections were obtained from the previous planning consultant, then the analysis was carried out with GEO5 software. The initial model was created first with the same parameters as the previous planning in order to provide the same penetration, displacement and internal force requirements as the planning consultant. The same model in the analysis results will be used as an analysis model for the LRFD approach and the analysis results in the LRFD model will be compared with the analysis model in the ASD approach. Based on the results of the LRFD analysis on the Strength boundary condition, it was found that the LRFD method gave a penetration depth 21.7% greater than ASD, moment force 40% greater than ASD and shear force 7.8% greater than ASD. A more detailed approach needs to be carried out on other boundary conditions such as Service and Extreme in order to provide more optimal comparison results
Analisis Tingkat Penerapan Green Building pada Gedung Fakultas Kehutanan UGM berdasarkan Aturan GBCI (Green Building Council Indonesia) Maharani, Mentari Putri; Amar, Tsulis Iqbal Khairul; Maghfuri, Syakir; Harjanto, Furqaan
Prosiding Seminar Nasional Teknik Sipil UMS 2025: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

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

Abstract

Bangunan konvensional berkontribusi terhadap 40% konsumsi energi global dan peningkatan emisi gas rumah kaca. Green building hadir sebagai solusi melalui efisiensi energi, pengelolaan limbah, dan penggunaan material ramah lingkungan. Penelitian ini bertujuan menganalisis penerapan konsep green building pada Gedung Fakultas Kehutanan UGM berdasarkan standar Greenship Existing Building Version 1.1 dari GBCI, dengan fokus pada kategori Energy Efficiency and Conservation (EEC) dan Material Resource and Cycle (MRC). Metode yang digunakan adalah pendekatan kuantitatif melalui observasi, wawancara, dan kuesioner, serta analisis data menggunakan SEM-PLS. Hasil menunjukkan gedung memperoleh 52 poin (92%) dan meraih peringkat Platinum. Responden mayoritas menilai penerapan sudah optimal. Namun, masih diperlukan peningkatan pada dokumentasi material berkelanjutan dan sistem monitoring energi. Penelitian merekomendasikan peningkatan sistem pemantauan, edukasi civitas akademika, serta evaluasi rutin guna mengoptimalkan implementasi green building.
Strategi Optimalisasi Penjadwalan Proyek Jalur Ganda Kereta Api untuk Konstruksi Berkelanjutan dengan Metode Line of Balance Amar, Tsulis Iq'bal Khairul; Magfirona, Alfia; Maharani, Mentari Putri; Amaristyanto, Yoga
Jurnal Linears Vol. 8 No. 2 (2025): Jurnal LINEARS
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26618/2551ce98

Abstract

ABSTRAK: Penjadwalan proyek konstruksi repetitif, seperti pembangunan jalur ganda kereta api, memerlukan pendekatan yang efisien dalam pengelolaan sumber daya dan waktu. Metode Line of Balance (LoB) merupakan teknik penjadwalan yang dapat mengoptimalkan pekerjaan berulang dengan menjaga kontinuitas alur kerja. Namun, penerapannya pada proyek infrastruktur skala besar masih menghadapi tantangan, terutama dalam hal alokasi sumber daya yang optimal. Penelitian ini bertujuan untuk mengembangkan model optimasi penjadwalan berbasis LoB guna meningkatkan efisiensi pelaksanaan proyek pembangunan jalur ganda kereta api. Metode yang digunakan adalah kuantitatif komparatif, dengan membandingkan durasi proyek antara penjadwalan berbasis kurva-S dan LoB. Data yang dianalisis merupakan data sekunder dari proyek aktual dan diolah menggunakan Microsoft Excel 2021. Hasil penelitian menunjukkan bahwa metode LoB mampu mengurangi durasi proyek secara signifikan sebanyak 19, 75 minggu dibandingkan dengan metode konvensional. Implementasi LoB menghasilkan perencanaan yang lebih terstruktur dengan tumpang tindih pekerjaan yang lebih sesuai, sehingga mampu meminimalkan waktu menganggur (idle time) dan meningkatkan produktivitas proyek secara keseluruhan. Salah satu pola optimasi yang terbukti efektif adalah penjadwalan ulang pekerjaan jembatan, box culvert, dan dinding penahan tanah (DPT) agar dilaksanakan setelah badan jalan terbentuk. Pendekatan ini menghindari konflik akses dan tumpang tindih yang tidak produktif yang umum terjadi saat pekerjaan tersebut dilaksanakan secara paralel. Dengan menyesuaikan urutan pelaksanaan terhadap kondisi lapangan, proyek menjadi lebih tertib dan efisien. Penelitian ini memberikan kontribusi nyata dalam optimalisasi penjadwalan proyek konstruksi repetitif serta menjadi referensi dalam pengembangan metode penjadwalan untuk proyek infrastruktur skala besar di masa mendatang.   ABSTRACT: Scheduling repetitive construction projects, such as double-track railway development, requires an efficient approach to resource and time management. The Line of Balance (LoB) method is a scheduling technique that optimizes repetitive tasks by ensuring a continuous workflow. However, its application in large-scale infrastructure projects still faces challenges, particularly in optimizing resource allocation. This study aims to develop an LoB-based scheduling optimization model to improve the efficiency of double-track railway construction projects. A comparative quantitative method is used by analyzing project durations based on the S-curve method and the LoB method. The data used are secondary data from an actual project, analyzed using Microsoft Excel 2021. The results indicate that the LoB method significantly reduces project duration compared to conventional methods. Its implementation results in a more structured plan with more efficient task overlaps, thereby minimizing idle time and increasing overall project productivity. One of the effective optimization patterns identified is the rescheduling of bridge, box culvert, and retaining wall (DPT) works to take place after the roadbed construction is completed. This approach avoids access conflicts and unproductive overlaps that commonly occur when these activities are scheduled in parallel. By aligning the work sequence with actual site conditions, the project becomes more orderly and efficient. This research contributes to the optimization of repetitive construction project scheduling and serves as a reference for developing scheduling methods for future large-scale infrastructure projects.