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All Journal CIVED (Journal of Civil Engineering and Vocational Education) Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Jurnal Teknologi Rekayasa Sipil Jurnal Rekayasa Sipil Jurnal Aplikasi Teknik Sipil Jurnal Rekayasa Sipil axial : jurnal rekayasa dan manajemen konstruksi Teknomekanik ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Jurnal Inovasi Masyarakat JUTIS Jurnal Pengabdian West Science SAINTEK Jurnal Teknik Sipil Journal of Civil Engineering and Vocational Education Media Konstruksi : Jurnal Ilmiah Teknik Sipil Prosiding Seminar Nasional Ilmu Teknik Proceeding of The International Conferences on Engineering Sciences
Citra, Zel
Civil Engineering, Faculty Of Engineering, Universitas Mercu Buana, Indonesia
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

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INTEGRASI LEAN CONSTRUCTION DAN MANAJEMEN RISIKO BERBASIS JAVA PROGRAMMING GUNA OPTIMASI BIAYA KONSTRUKSI PRECAST Citra, Zel; Wibowo, Paksi Dwiyanto; Malinda, Yosie; Wibisono, Anom; Ashadi, Reza Ferial; Elza, Suci Putri; Apdeni, Risma
axial : jurnal rekayasa dan manajemen konstruksi Volume 13, Nomor 1, April Tahun 2025
Publisher : Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/axial.v13i1.4336

Abstract

Proyek konstruksi pembangunan Hotel & Resort di Samosir adanya potensi terjadinya keterlambatan pekerjaan. Oleh karena itu diperlukan satu inovasi dalam upaya peningkatan kinerja biaya melalui integrasi metode Lean Construction dan manajemen risiko berbasis  Java Programming pada proses forecasting untuk optimasi kinerja biaya proyek konstruksi bangunan precast. Lean Construction merupakan metode yang bertujuan untuk simulasi peningkatan value atau nilai tambah produksi serta mengurangi biaya operasi (waste). Sedangkan manajemen risiko merupakan tata kelola untuk menentukan rencana tindak lanjut atas beberapa kejadian yang memiliki dampak pada kelangsungan suatu proyek. Dalam hal ini integrasi atas dua metode tersebut akan dibuat dalam sebuah program pemodelan berbasis Java Programming. Hasil dari simulasi integrasi metode Lean Construction dan manajemen risiko, dimana besarnya biaya risiko sebelum dioptimasi yaitu Rp 14,753milyar. Selanjutnya dari hasil analisis optimasi dengan Lean Construction dan manajemen risiko berbasis aplikasi Java Programming,maka hasilnya adalah biaya risiko turun sebesar 51% menjadi Rp 7,230milyar. 
Assessment of Steel Structure Connections After Fire Exposure Through Bolt Torque Testing and Dye Penetrant Inspection Zel Citra; Antonius Antonius; Agung Wahyudi Biantoro
Proceeding of the International Conferences on Engineering Sciences Vol. 2 No. 1 (2025): January : Proceeding of the International Conferences on Engineering Sciences
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/iconfes.v2i1.41

Abstract

In 2022, a significant fire incident occurred at a steel tower structure in an industrial plant in Lampung, Indonesia, raising serious concerns about the structural integrity and serviceability of the affected steel framework. Fire exposure is known to alter the properties of steel, weaken bolt pretension, and cause defects in welds, underscoring the necessity of thorough post-fire assessments. Nondestructive testing (NDT) methods are crucial in evaluating the safety and stability of structures after fire exposure, as they can detect potential weaknesses without compromising the material further. This study employed two field inspection methods: the bolt torque test and dye penetrant inspection (DPI). A total of 21 bolts (Tor-1 to Tor-21) were tested for their integrity. The results showed that, while all bolts were present, more than half were found to be loosened, indicating the need for re-tightening to restore the specified torque and maintain the required preload for the bolted connections. In addition, 20 welded joints (DP-1 to DP-20) were examined using DPI to detect surface defects. The inspection revealed that 10 welds (50%) exhibited surface defects exceeding 5 mm in length, indicating areas where the welds had been compromised by the fire exposure. Seven welds (35%) were found to be in acceptable condition, while 2 welds (10%) were incomplete or had poor bonding. These findings suggest that while the bolted joints can be restored through corrective re-tightening, the welded joints require more extensive evaluation, local repairs, or even rewelding to ensure their structural integrity. This study highlights the importance of NDT methods in post-fire structural evaluations and recommends periodic inspections and targeted rehabilitation to ensure the long-term reliability and safety of industrial steel structures.
Penilaian Kondisi Kekerasan dan Kekuatan Struktur Baja Eksisting Menggunakan Pengujian Leeb Hardness (Studi Kasus : Bangunan Baja Penyimpanan) Zel Citra; Antonius Antonius; Agung Wahyudi Biantoro; Herol Herol; Risma Apdeni
Prosiding Sains dan Teknologi Vol. 5 No. 1 (2026): Seminar Nasional Sains dan Teknologi (SAINTEK) ke 5 - Februari 2026
Publisher : DPPM Universitas Pelita Bangsa

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Abstract

Silo baja pada fasilitas industri beroperasi dalam lingkungan agresif serta menerima beban siklik jangka panjang yang dapat memicu degradasi sifat mekanik material. Oleh karena itu, evaluasi kondisi struktur eksisting diperlukan untuk menjamin keselamatan operasional tanpa mengganggu fungsi layanan melalui pengujian destruktif. Penelitian ini menyajikan studi kasus penilaian kekuatan baja pada silo berkapasitas 500T, 3500T, dan 5000T di sebuah pabrik di wilayah Tangerang menggunakan metode uji non-destruktif berbasis kekerasan. Pengujian dilakukan dengan alat uji kekerasan portabel pada beberapa ring ketinggian. Nilai kekerasan Leeb (HL) yang diperoleh dikonversi menjadi estimasi kuat tarik ultimit (fu) dan kuat leleh (fy). Hasil konversi kemudian dibandingkan dengan nilai rujukan baja struktural untuk menentukan tingkat reduksi kekuatan material yang diasosiasikan dengan korosi dan pengaruh operasional. Evaluasi menunjukkan bahwa secara umum kekuatan material masih berada dalam kisaran yang mendekati standar. Namun, tren penurunan kapasitas teridentifikasi cukup konsisten pada ring bagian bawah hingga menengah. Rata-rata reduksi terbesar terjadi pada silo 3500T yaitu sekitar 11%, diikuti silo 500T sebesar 7%, sedangkan silo 5000T menunjukkan penurunan paling kecil sekitar 5%. Perbedaan ini diduga berkaitan dengan variasi desain, mutu material awal, serta kondisi paparan lingkungan. Hasil penelitian menegaskan bahwa metode kekerasan non-destruktif efektif sebagai alat skrining awal dalam mengevaluasi kelayakan struktur silo baja yang masih beroperasi.
Evaluasi kondisi struktur beton bertulang dengan menggunakan half cell potential test pada bangunan kantor di pinggir Pantai Ancol Zel Citra; Yosie Malinda; Paksi Dwiyanto Wibowo; Suci Putri Elza; Risma Apdeni
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa Vol. 13 No. 1 (2024)
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.13.1.8621.48-53

Abstract

Measurement of half cell potential is commonly used for the assessment of the resistance of reinforced concrete where corrosion of the reinforcement is predicted. The standards used in the test are ASTM C876-91: Standard Test method for half-Cell Potential of Uncoated Reinforcing Steel in Concrete and ACI 222R-01: Protection of Metal in Concrete Against Corrosion. Furthermore, the carbonation of the reinforcement in the concrete which is caused by a chemical reaction between calcium in the concrete and sulfate salts from the outside make the concrete mass is pushed and broken. The results of testing the reinforced concrete structures of office buildings on the Ancol waterfront, some of the carbonation that occurs has exceeded the concrete cover. The results of the Half Cell Potential test 1, 2, 6, 8, 9, and 10 show that the corrosion rate of the reinforcement in the concrete is <10% with type 3, namely "humid, chloride free concrete", where the concrete is moist and not contaminated chloride, which means that the corrosion rate of steel reinforcement in concrete is quite low. The results of the Half Cell Potential 3, 4, 5, and 7 tests show that the corrosion rate of the reinforcement is between 10% - 90% with type 4, namely "humid, carbonated concrete", where the concrete is moist and carbonated but the corrosion rate is not too high.
Application of ground penetrating radar for evaluating foundation structure condition after earthquake Risma Apdeni; Zel Citra; Fitra Rifwan; Prima Yane Putri; Nevy Sandra; Yosie Malinda; Paksi Dwiyanto Wibowo; Reza Ferial Ashadi; Annisa Prita Melinda
Teknomekanik Vol. 7 No. 1 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i1.26772

Abstract

At the time of seismic activity, the failure of the foundation structure will lead to building damage. When the West Pasaman 2022 earthquake occurred, PT. XYZ is constructing a feed mill tower. Since strong earthquake shocks were felt at the project location, foundation structure evaluation is needed to ensure the safety of the building. Ground Penetrating Radar (GPR) is a tool that is widely used to detect subsurface conditions. This study used GPR as a non-destructive testing technique to evaluate the condition of the foundation structure. The building evaluated is a high-rise steel building, using spun pile foundation. GPR test was carried out in specified lanes, with measurement tracks set at 10 lanes. Any cracks or fractures on the foundation will be indicated by the interruption of waves at the point of the crack or fracture. The GPR test results from readings of electromagnetic wave propagation showed that waves can reach the end of each foundation tested, ranging from 17.10 m to 17.82 m deep. It means that there are no cracks or fractures found on the slab, pile cap, or foundation. Analysis results showed that all slabs and pile caps thicknesses and the detected foundation piles depths are in accordance with the foundation design, which means that the foundations are still in good condition.
ANALISIS DIAFRAGMA, KORD, DAN KOLEKTOR PADA BANGUNAN RUMAH SAKIT DENGAN LAYOUT L Suci Putri Elza; Erlangga Rizqi Fitriansyah; Zel Citra
Jurnal Rekayasa Sipil (JRS-Unand) Vol. 21 No. 3 (2025)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.21.3.200-212.2025

Abstract

Berbagai wilayah geografis di dunia, termasuk Indonesia, memiliki potensi risiko gempa tinggi. Keamanan struktural bukan sebatas memastikan keselamatan fisik bangunan sendiri, tetapi juga merupakan aspek kritis dalam memastikan perlindungan terhadap nyawa manusia. Oleh karena itu, pemahaman tentang perilaku struktural bangunan dalam menghadapi beban lateral akibat gempa menjadi sangat penting. Maka diperlukan perhatian khusus terhadap bangunan yang beroperasi pada kondisi darurat, salah satunya yaitu rumah sakit.  Tujuan  penulisan  ini untuk menyelidiki dan menganalisis kinerja struktural bangunan rumah sakit dengan bentuk layout L. Fokus utama penelitian mencakup tiga aspek kunci, yaitu diafragma, kord, dan kolektor. Elemen-elemen tersebut berfungsi sebagai elemen struktural horizontal yang menerima dan mendistribusikan beban lateral ke elemen struktur vertikal. Metode penelitian melibatkan survei literatur dan analisis struktural menggunakan perangkat lunak. Analisis diafragma akan distribusi beban lateral di seluruh bangunan, sedangkan analisis kord akan mengevaluasi kekuatan dan distribusi beban di elemen vertikal. Kolektor akan dianalisis untuk memahami bagaimana sistem struktural menanggulangi gaya lateral. Hasil menunjukkan bahwa pada bangunan kategori risiko yang besar seperti rumah sakit memiliki gaya desain diafragma yang besar akibat pengaruh nilai faktor keutamaan gempanya. gaya desain diafragma terbesar, yaitu Fpx max sebesar 90 kN, terjadi pada lima lantai pertama yang menampung beban hidup besar, seperti area publik dan ruang operasi. Pada lantai 1–12, gaya desain diafragma yang digunakan adalah Fpx min sebesar 45 kN, sedangkan pada lantai 13–15 digunakan gaya Fx (CQC) sebesar 60 kN. Ketebalan pelat lantai 150 mm dengan tulangan D10-200 masih mencukupi kebutuhan tulangan diafragma pada lantai-lantai tersebut. Namun, penggunaan gaya Fpx max membutuhkan penambahan tulangan pada lantai-lantai yang lebih rendah akibat nilai gaya yang jauh lebih besar. Selain itu, analisis terhadap kord dan kolektor menunjukkan bahwa gaya desainnya masih dapat diakomodasi oleh diafragma, meskipun terdapat ketidakberaturan vertikal pada perubahan ketebalan lantai dari 150 mm (lantai 5) ke 130 mm (lantai 6).
Pelatihan Tentang Metode Perbaikan Kerusakan Rumah Akibat Gempa Paksi Dwiyanto Wibowo; Zel Citra; Yosie Malinda; Anom Wibisono
Jurnal Pengabdian West Science Vol 5 No 02 (2026): Jurnal Pengabdian West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jpws.v5i02.3225

Abstract

Memasuki tahun 2023, Indonesia menghadapi serangkaian gempa bumi yang terjadi secara simultan. Berdasarkan data resmi BMKG, sejak 3 hingga 21 Januari 2023 tercatat 19 kejadian gempa dengan magnitudo lebih dari 5. Tingginya potensi gempa di Indonesia menjadi perhatian penting bagi para engineer dalam merencanakan dan mengevaluasi ketahanan bangunan, khususnya rumah tinggal. Kekhawatiran masyarakat terhadap keselamatan bangunan saat gempa menegaskan pentingnya penerapan konsep bangunan tahan gempa. Perlu dipahami bahwa korban jiwa umumnya bukan disebabkan oleh gempa itu sendiri, melainkan oleh kegagalan struktur bangunan. Oleh karena itu, edukasi dan pelatihan, khususnya bagi siswa SMK jurusan Teknik Bangunan, menjadi sangat penting untuk meningkatkan pemahaman mengenai tingkat kerusakan, mutu material, dimensi elemen struktur, serta metode perbaikan rumah pasca gempa. Dalam konteks ini, diperlukan pelatihan terarah guna meningkatkan pengetahuan dan kesadaran siswa SMK Negeri 4 Tangerang mengenai perbaikan rumah tahan gempa secara ilmiah dan teknis.
Penyuluhan dan Peningkatan Kemampuan Siswa Dalam Membuat Campuran Beton Untuk Struktur Rumah Aman Gempa Paksi Dwiyanto Wibowo; Yosie Malinda; Zel Citra; Anom Wibisono
Jurnal Pengabdian West Science Vol 5 No 07 (2026): Jurnal Pengabdian West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jpws.v5i07.3758

Abstract

Indonesia merupakan salah satu negara dengan tingkat aktivitas seismik yang tinggi. Data Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) menunjukkan bahwa pada periode 3–21 Januari 2023 terjadi 19 gempa bumi dengan magnitudo di atas 5. Kondisi tersebut menjadi perhatian dalam perencanaan dan evaluasi struktur bangunan, khususnya rumah tinggal, agar mampu memberikan perlindungan saat terjadi gempa. Sebagian besar korban jiwa pada bencana gempa disebabkan oleh keruntuhan bangunan akibat kegagalan struktur, bukan oleh guncangan gempa itu sendiri. Oleh sebab itu, peningkatan kompetensi di bidang konstruksi perlu dilakukan sejak jenjang pendidikan vokasi. Melalui edukasi dan pelatihan, siswa SMK Jurusan Teknik Bangunan diharapkan memahami mutu material, prinsip penyusunan campuran beton, serta penerapannya pada elemen struktur rumah tahan gempa. Kegiatan ini bertujuan meningkatkan pengetahuan dan keterampilan siswa SMK Negeri 4 Tangerang dalam menyusun campuran beton yang memenuhi kaidah teknis untuk mendukung pembangunan rumah yang lebih aman terhadap gempa.
BIM-Based Quantity Take-off for Reinforced Concrete Structure Works in Educational Building Construction Project Arvan Dani; Risma Apdeni; Zel Citra
CIVED Vol. 12 No. 2 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/59ea1946

Abstract

The use of Building Information Modeling (BIM) in Indonesia is still limited and not yet common. One of the benefits of Building Information Modeling (BIM) is to improve efficiency in calculating the amount of work. Quantity Take-off calculations are often done conventionally by measuring shop drawings manually, which can lead to errors due to inaccuracies and complexities in calculating the volume of work. One software that can assist in designing, simulating, and visualizing buildings is Autodesk Revit software. The calculation process is done by converting 2D Detailed Engineering Design (DED) drawings into 3D drawings using Revit 2024 software. The case study of this research is the Construction Project of the Guest House Building at the University of Riau, Pekanbaru City, Riau Province. The research process involves modeling based on references from shop drawings, followed by performing quantity take-off calculations on the building structure work. The output of the modeling shows the results of calculating the volume of concrete needed for the building structure and the quantity of steel reinforcement from the building structure. Based on the calculation results, the volume of concrete needed for the conventional method is 391.197 m3, which when multiplied by AHSP results in a total cost of Rp 762,376,997.19. Meanwhile, the total volume using Autodesk Revit 2024 is 318,213 m3 with a total cost of Rp 620,942.778,00. For the reinforcement work of the structure, the Autodesk Revit calculation results in Rp 1,952.501.845,31, while the results from the conventional method amount to Rp 3,697.279.792,12. It can be concluded that the calculation results using Building Information Modeling (BIM) method are smaller than the calculations using the conventional method.
Analysis of Factors Causing Occupational Accident Risks Using the HIRARC and Bow Tie Analysis Method in the Mall Building Construction Project in Bekasi Zel Citra; Eugenia Denta Sirait; Yosie Malinda; Paksi Dwiyanto Wibowo
Jurnal Aplikasi Teknik Sipil Vol 24 No 3 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

Construction activities carry high risks, one of which is in the aspect of Occupational Safety and Health (OSH) this research discusses the analysis of risk factors for occupational health and safety (OHS) in the Mall Building Construction Project in Bekasi using the HIRARC and Bowtie Analysis methods. The purpose of this analysis is to identify and analyze OHS risks related to the Mall Building Construction Project in Bekasi, as well as to determine effective controls to reduce risks and improve the eddectiveness of the safety system. Risk identification is carried out based on observation, interviews, and questionnaires. The risk is assessed based on observation, interviews, and questionnaires. The risk is assessed based on its likelihood and severity, which is then used to determine the risk level. The HIRARC and Bowtie method are effective in identifying and assessing complex OHS risks, as well as determining effective controls to reduce those risks. From the research result, it was fpund that several factors causing occupational accidents in the Mall Building Construction Project in Bekasi include 22% human error, 26% unsafe environmental conditions, 19% not using complete PPE, and 33% due to lack of supervision.
Co-Authors Adistana, Herlis Sweta Adriansyah Adriansyah Agung Wahyudi Biantoro Ali Amran Annisa Prita Melinda Anom Wibisono Antonius Antonius Antonius Antonius Antonius antonius antonius Arvan Dani Ashadi, Reza Ferial Budi Susetyo Cahya Suryadi Christian Bessie, Steaven Desiana Vidayanti Elhazri Hasdian Erlangga Rizqi Fitriansyah Erlangga Rizqi Fitriansyah Ernanda Dharmapribadi Eugenia Denta Sirait Fitra Rifwan Fitra Rifwan Frangklyn Sinulingga, Jef Gede Ananda Kusuma, I Dewa Haifan, Mohamad Hamonangan Girsang Herol Herol Herol, Herol Intan Purnama Sari Jef Frangklyn Sinulingga Komerdevi, Det Lily Kholida Lumingkewas, Riana Herlina Magdalena, Sara Malinda, Yosie Mana Marang, Maria Natalia Melina Lubis, Nadia Tutur Melinda, Annisa Prita Mukhlisya Dewi Ratna Putri Nevy Sandra Nevy Sandra Paksi Dwiyanto Wibowo Paksi Dwiyanto Wibowo Paksi Wibowo Pitaloka, Fanny Pranoto, Rodliyan Yusuf Prima Yane Putri Putri, Prima Yane Reni Karno Kinasih Reza Ferial Ashadi Risma Apdeni Risma Apdeni Risma Apdeni Risma Apdeni Risma Apdeni Sawarni Hasibuan Sinulingga, Jef Frangklyn Suci Putri Elza Suci Putri Elza Tathia Edra Swasti Wibowo, Paksi Dwiyanto