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All Journal Prosiding Semnastek Journal of Applied Geospatial Information Jurnal Ilmiah Universitas Batanghari Jambi Astonjadro Journal of Community Based Environmental Engineering and Management JURNAL REKAYASA Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT) Tameh : Journal of Civil Engineering Prosiding Seminar Nasional Rekayasa dan Teknologi (TAU SNAR- TEK) Rona Teknik Pertanian INTER TECH
Fadhila Muhammad Libasut Taqwa
Universitas Ibn Khaldun
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Public Health Transportation Other

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Journal : Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil

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Analisis Stabilitas Dan Biaya Perencanaan Dinding Penahan Tanah Tipe Bronjong di Sungai Ciliwung (Studi Kasus: Ruas Legok Nyenang Rt.01/03, Desa Leuwimalang, Kecamatan Cisarua, Kabupaten Bogor) Afryansyah, Afryansyah; Hariati, Feril; Taqwa, Fadhila Muhammad Libasut; Alimuddin, Alimuddin
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 1 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i1.7369

Abstract

Abstrak: Dinding penahan tanah adalah suatu struktur yang dibangun untuk menahan tanah lateral ketika tanah mengalami perubahan dalam elevasi dan melampaui sudut geser dalam tanah. Kondisi akses utama jalan Leuwimalang di Kampung Legok Nyenang RT 01/03, mengalami kerusakan. Sementara itu setengah jalan yang mengalami penurunan tanah tidak bisa berfungsi secara maksimal, hal ini diakibatkan terjadinya longsor sepanjang 27 meter di sekitar bantaran Sungai Ciliwung. Maka dari itu dilakukan analisa perbandingan dinding penahan tanah tipe gravitasi dan tipe kantilever bertujuan untuk merencanakan bentuk dan dimensi dinding penahan tanah tipe gravitasi, menganalisis stabilitas dinding penahan tanah terhadap guling, dan geser, menganalisis biaya konstruksi serta membandingkan nilai keamanan dan biaya konstruksi dinding penahan tanah tipe bronjong dengan tipe kantilever. Perhitungan tanah aktif menggunakan Metode Rankine. Pada struktur konstruksi dinding penahan tanah kantilever didapatkan stabilitas terhadap penggeseran (Fgs) = 0,39< SF = 1,5 dan untuk stabilitas terhadap guling (Fgl) = 0,78< SF = 1,5. Biaya konstruksi total yang diperlukan untuk membuat dinding penahan tanah tipe bronjong sebesar Rp. 2.680.000.000, sedangkan biaya konstruksi total yang diperlukan untuk membuat dinding penahan tanah tipe kantilever sebesar Rp. 1.460.000.000. Jadi dinding penahan tanah yang ekonomis dari segi biaya adalah dinding penahan tanah tipe kantilever.Kata Kunci: Stabilitas, Dinding penahan tanah, Biaya konstruksiAbstract: Retaining wall is a structure built to withstand lateral soil when land changes in elevation and exceed the friction angle in the soil. The main access condition of Leuwimalang road in Kampung Legok Nyenang RT 01/03, was damaged. Meanwhile, half of the road that has subsided in the soil cannot function optimally, this is due to a 27 meters landslide around the banks of the Ciliwung River. Therefore, a comparative analysis of the gravity-type and cantilever-type retaining walls is carried out to plan the shape and dimensions of the gravity-type retaining wall, to analyze the stability of the retaining wall against rolling and shear, to analyze construction costs and to compare the value of safety and construction costs of retaining walls. gabion type with cantilever type. Active soil calculation using the Rankine Method. In the cantilevered retaining wall construction structure, the stability to displacement (Fgs) = 0.39 <SF = 1.5 and for stability to overturning (Fgl) = 0.78 <SF = 1.5. The total construction cost required to construct a gabion-type retaining wall is Rp. 2,680,000,000, while the total construction cost required to construct a cantilever type retaining wall is Rp. 1,460,000,000. So an economical retaining wall in terms of cost is a cantilever type retaining wall.Keywords: Stability, Retaining walls, Construction costs.
Analisis Stabilitas Dinding Penahan Tanah Saluran Irigasi Situ Bala, Desa Purwasari, Kecamatan Dramaga, Kabupaten Bogor Assiddiqy, Mohammad Hasby; Syaiful, Syaiful; Alimuddin, Alimuddin; Muktadir, Redho; Taqwa, Fadhila Muhammad Libasut
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.8295

Abstract

ABSTRAKDinding penahan tanah adalah suatu struktur yang dibangun untuk menahan tanah lateral ketika tanah mengalami perubahan dalam elevasi, dan melampaui sudut geser dalam tanah. Dinding pengaman tebingan yang terletak tepat di Situ Bala, Desa Purwasari, Kecamatan Dramaga telah mengalami kerusakan pada bagian dasar strukturnya terutama pada bagian yang terkena sistem irigasi sehingga perlu dilakukan perbaikan terhadap dinding penahan tanah eksisting. Tujuan penelitian ini adalah untuk menganalisis kondisi lereng akibat tergerus oleh aliran udara yang mengakibatkan terjadinya longsor, merencanakan dinding penahan tanah agar memiliki faktor keamanan yang cukup, dan menghitung kapasitas daya dukung tanah. Metode yang digunakan dalam penelitian ini adalah Metode Rankine .Hasil analisis menunjukkan perlindungan terhadap guling Fs= 0.86 < 1,5 (tidak aman terhadap geser Fs = 2.5119 > 1,5 (aman), dan analisis ketahanan daya dukung tanah qtoe = 12419.5895 < Qall= 4139.8631 (aman) dan qhell = 31.4263 (aman).  Kata kunci: Stabilitas, dinding penahan tanah , Metode Rankine ABSTRAKA retaining wall is a structure constructed to resist lateral soil when the soil undergoes a change in elevation and exceeds the angle of shear in the soil. The cliff safety wall which is located right at Situ Bala, Purwasari Village, Dramaga District, has suffered damage to the basic part of the structure, especially the part affected by the irrigation canal so that it is necessary to repair the existing retaining wall. The purpose of this study was to analyze the condition of the slope, where the air flow above it eroded which resulted in landslides changing the channel so that it was necessary to redesign the existing retaining wall, plan the retaining wall to be safe against shear conditions, overturning, and the carrying capacity of the soil. The method used in this study is the Rankine Method. The results of the analysis show resistance to overturning Fs= 0.86 < 1.5 (unsafe against shear Fs = 2.5119 > 1.5 (safe), and soil bearing capacity analysis qtoe = 12419.5895 < Qall= 4139.8631 (safe) and qhell = 31.4263 ( safe). Kata kunci: Stabilitas, dinding penahan tanah, Metode Rankine
Studi Perbandingan Daya Dukung Aksial Tiang Pancang Tunggal Persegi Berdasarkan Hasil Uji Pembebanan Statik (SLT) dan Uji PDA pada Pembangunan Apartemen Loftville City Kota Tangerang Selatan Taqwa, Fadhila Muhammad Libasut; Muktadir, Redho; Hariati, Feril; Lutfi, Muhamad; Apriliyandi, Ande
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9176

Abstract

Abstract: The deep foundation is one of the most important elements in the construction of high-rise buildings because the weight of the building will be fully borne by the foundation. This study aims to provide an overview of the prediction of the axial bearing capacity of single piles through a mathematical approach based on the results of the tests performed. The design axial bearing capacity is estimated through analysis of soil investigation results (N-SPT test results, DCPT test results, and laboratory investigation results), while the actual axial bearing capacity is obtained through interpretation of the Static Loading Test (SLT) results using the Davisson, Chin, and Mazurkiewicz, and the results of the PDA (Pile Driving Analyzer) load test were analyzed using the CAP-WAP application. The analysis was carried out on single piles with dimensions of 40x40 cm2, located in the Loftville City Apartment development project, South Tangerang City. Based on the results of the analysis that has been carried out, the planned axial bearing capacity is 131.3 tons, while the average carrying capacity based on the results of SLT interpretation on three tested piles using the Davisson, Mazurkiewicz, and Chin methods are 161.7; 205.4; and 98.8 tonnes. The results of the analysis are compared to the results of the PDA test, which shows a bearing capacity value of 290.1 tons, so the BCR values are 65.70% and 45.26% respectively. The BCR value is based on the results of the interpretation of the SLT test successively -respectively by 55.73%, 70.78%, and 34.06%. The BCR value which is not close to 100% may occur due to an error in determining the planned carrying capacity of 131 tons which is far below the actual carrying capacity value based on the PDA test results. The design carrying capacity value is then corrected to 100 tonnes and used as the 100% design load in the static load test so that the interpretation results also show BCR results that are not very accurate.
Studi Perbandingan Biaya pada Pekerjaan Pembongkaran Balok Girder di Proyek Penggantian Jembatan Cinagara Suhendar, Tatang; Mardiaman, Mardiaman; Azhar, Moh; Taqwa, Fadhila Muhammad Libasut
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17332

Abstract

There are 3 (three) alternative methods for dismantling bridge girders in the Cinagara Bridge replacement project, to find the most efficient and safe approach. The Cinagara Bridge, which is on the Ciawi – Sukabumi national road, Caringin district, Bogor Regency, located in a densely populated area and also close to the installation of the PGN pipeline network and PLN cable lines. This research aims to choose the implementation method with the most efficient costs, while still paying attention to safety and ease of work. The three alternative methods are: dismantling by lifting and moving the girder beam as a whole; dismantling by lifting the girder beam as a whole, then moving it segment by segment; and dismantling by breaking the girder beams on the spot and dropping them into the river, to be then moved outside the site. The research results show that the third method, namely breaking the girder beam on the spot and dropping it into the river, has the lowest implementation cost of IDR 86,637,250.00 and efficient implementation time. This method also ensures that the demolition results can be mobilized outside the project site and has the lowest risk of accidents. The first and second methods cost IDR 365,762,935.00 and IDR 170,301,233.00 respectively, and face various technical challenges and social risks. This research provides recommendations for using the third method with appropriate adjustments to ensure a smooth dismantling process, minimize environmental impacts, and maximize work safety. Apart from that, it is important to carry out routine equipment inspections, arrange demolition times during the day, and install safety nets to protect the surrounding area from demolition debris. Thus, this research can be a reference in choosing an effective demolition method for similar projects
Analysis of the Effect of Evaluation and Innovation in the Development of Construction Safety Culture on the Safety Leadership Model using SEM Approach Taqwa, Fadhila Muhammad Libasut; Priyambodo, Bambang; Subkhan, Subkhan; Naibaho, Pio Ranap Tua
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 2 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i2.20134

Abstract

In the construction sector, the Construction Safety Management System (SMKK) has been determined by the Regulation of the Minister of Public Works No. 10 of 2021 as a reference for addressing the risk of industrial accidents and improving building safety. Full implementation of occupational safety (K3) can minimize the risk of work accidents. However, in reality, there are still many obstacles for companies and employees, and many accidents in the workplace are caused by unsafe behavior factors by the workers themselves. The methodology used in this study involves various approaches, such as literature review and primary data acquisition through questionnaires targeting respondents in construction project environments. The collected data will be analyzed using the Structural Equation Modeling method to identify important variables. Data processing was performed using the Smart-PLS version 4.1.0.1 application to determine the outer and inner models. Hypothesis testing was conducted using bootstrapping, considering the Original Sample values, T-statistics, and P-values. Based on the results, it is concluded that safety leadership has a significant indirect influence on improving safety performance. The strengthening of leadership aspects has the largest impact on improving safety culture, which then influences the improvement of construction safety performance, with an original sample (O) value of 0.273, a sample mean (M) of 0.277, a standard deviation (STDEV) of 0.177, a T-statistic value of 2.324, and a P-value of 0.001. Furthermore, effective safety evaluation (e.g., constructive and systematic evaluation) can help build a stronger safety culture, which in turn will improve overall safety performance. The implementation of innovation in construction processes or safety technology can also encourage better safety behavior among workers, which then contributes to improved safety performance.
Co-Authors Afryansyah, Afryansyah Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin, Alimuddin ANDRI ARTHONO Apriliyandi, Ande Arthono, Andri Assiddiqy, Mohammad Hasby Azka fadilla setiawan Bambang Priyambodo, Bambang Berangket, Rustama Brillianto, Ananta Giga Chayati, Nurul Chika Restu Maulidina, Chika Dini Aryanti Ekadipta Ekadipta Fadhillah Sulaeman, Nur Handika Feril Hariati Fitri, Ria Handayani, Juny Idi Namara Insan, Muhammad Khaerul Iskandar, Anan Manlian Ronald A. Mardiaman, Mardiaman Moh Azhar Moh. Didi Haidir1 Muhamad Fadli Muhamad Lutfi Muhammad Dawud Muhammad Hasan Wicaksono Muhammad Ilham Muhammad Nanang Prayudyanto Muktadir, Redho Nandiasa, Jantiara Eka Nur Handika Fadhillah Sulaeman Pio Ranap Tua Naibaho Priyadi, Wisia Joko Putri, Andini Rizkarti Qonita, Nadhira Shofa Rahman, Ari Awalul Ramadan, Fahreza Rahmatsyah Ramadhan, Kurniawan Rulhendri Rulhendri Salman, Nurcholis Salman, Nurcholis Samsul Samsul Subkhan Subkhan Sudrajat, Endang Sugeng Riyadi Suhendar, Tatang Syaiful Syaiful . Wilter Sariyanto Simanjuntak Yasid, Viki Handika