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All Journal Media Teknik Sipil Jurnal Teknik Pengairan: Journal of Water Resources Engineering Journal of Geoscience, Engineering, Environment, and Technology JURNAL SAINTIS Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Sewagati
Ferly Oktavia
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Arts Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Languange, Linguistic, Communication & Media Physics Public Health Social Sciences Other

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Pengaruh Dimensi Tiang Mini Dan Faktor Aman Terhadap Lendutan Pelat Terpaku Tiang Tunggal Oktavia, Ferly; Puri, Anas; Mildawati, Roza
JURNAL SAINTIS Vol 18 No 2 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(2).3188

Abstract

[ID] Perkerasan Sistem Pelat Terpaku merupakan pengembangan Sistem Cakar Ayam yang berfungsi sebagai salah satu alternatif solusi untuk mengatasi permasalahan konstruksi jalan pada tanah lunak. Selain itu, kenaikan kapasitas dukung tanah dasar akibat pengaruh dukungan tiang-tiang pada pelat akan mengurangi kebutuhan tebal perkerasan beton dan memperkaku sistem perkerasan. Penelitian ini bertujuan untuk mempelajari pengaruh diameter tiang masif dan faktor aman terhadap lendutan pelat terpaku tiang tunggal. Dimensi struktur pelat terpaku dan data material mengacu pada Puri (2017). Sistem ini dibebani dengan pembebanan tekan sentris. Perhitungan lendutan dan gaya dalam pelat menggunakan metode BoEF, berdasarkan tambahan modulus reaksi tanah dasar ekivalen yang dibandingkan dengan lendutan hasil pengamatan. Hasil analisis menunjukkan bahwa besaran faktor aman mempengaruhi nilai lendutan hitungan. Lendutan hitungan meningkat dengan peningkatan faktor aman. Penggunaan faktor aman 1,0 memiliki pola lendutan mendekati lendutan pengamatan untuk tiang bulat. Analisis perhitungan lendutan dengan ukuran mini pile  yang semakin besar menghasilkan lendutan pelat yang semakin kecil. Variasi SF tidak berpengaruh signifikan terhadap momen pelat. [EN] The Nailed-Slab Pavement System is the development from the pavement of the Cakar Ayam System which as an alternative solution to solve the problem of road construction in soft soil. In addition, the increase in bearing capacity of the subgrade due to the influence of the poles support on the plate will reduce the need for thick concrete pavement and strengthen the pavement system. This study aims to learn the effect of massive pole diameter and safe factors on the deflection of single-pile Nailed Slab. The dimensions of the Nailed-slab structure and material refer to Puri (2017). This system is burdened with press centric loading. Calculation of deflection and force in plates uses the BoEF method, based on the additional modulus of the subgrade equivalent reaction which is compared to the deflection observed. The results of the analysis show that the magnitude of the safe factor affects the value of the deflection calcutation. This deflection  increases with an increase in safe factors. The use of the safe factor 1.0 has a deflection pattern that is closer to the observation deflection for the round pile. Analysis of the deflection calculation with the size of the mini pile which gets bigger results in a smaller slab deflection. SF variations have no significant effect on the plate moment.
Pengaruh Faktor Aman Global Modulus Reaksi Subgrade Ekivalen Izin TerhadapLendutan Sistem Pelat Terpaku Tiga Baris Tiang Ferly Oktavia; Anas Puri; Elizar
Media Teknik Sipil Vol. 21 No. 2 (2023): Agustus 2023
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v21i2.25689

Abstract

Sistem Pelat Terpaku merupakan sistem perkerasan kaku yang terdiri dari pelat dan tiang-tiang yang dipasang di bawahnya dan dihubungkan secara monolit. Dalam penelitian sebelumnya, Pelat Terpaku tiang tunggal menggunakan modulus reaksi subgrade ekivalen izin dan diperoleh hasil lendutan yang cukup tinggi. Oleh karena itu, penelitian ini dilakukan untuk mengetahui perilaku lendutan Pelat Terpaku tiga baris tiang menggunakan modulus reaksi subgrade ekivalen izin dengan variasi faktor aman global (SFG). Penelitian ini menggunakan data sekunder dari hasil uji skala penuh perkerasan Sistem Pelat Terpaku terhadap beban tekan pembebanan repetitif. Nilai modulus reaksi subgrade ekivalen izin (k’a) dengan variasi SFG (1,0; 2,0; 2,5; 3,0). Lendutan izin ditentukan menggunakan lendutan pengamatan dan lendutan izin maksimum. Tahanan ujung tiang diabaikan karena berada pada tanah lunak. Lendutan pelat dianalisis menggunakan metode BoEF (Beam on Elastic Foundation) dengan bantuan program “BoEF.xls” Program versi 1.4. Hasil analisis menunjukkan bahwa besaran faktor aman global (SFG) mempengaruhi lendutan pelat. Lendutan meningkat dengan meningkatnya SFG pada modulus reaksi subgrade ekivalen izin (k’a). Studi ini menunjukkan bahwa desain menggunakan pendekatan yang digunakan lebih aman, dimana hasil hitungan cenderung lebih besar bila dibandingkan dengan lendutan pengamatan. Hasil ini menunjukkan bahwa sistem dapat diaplikasikan di lapangan.
Pengaruh Dimensi Tiang Mini Dan Faktor Aman Terhadap Lendutan Pelat Terpaku Tiang Tunggal: The Effect of Mini Pile Dimensions And Safe Factors on The Deflection of Single-Pile Nailed Slab Oktavia, Ferly; Puri, Anas; Mildawati, Roza
JURNAL SAINTIS Vol. 18 No. 2 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2086.784 KB) | DOI: 10.25299/saintis.2018.vol18(2).3188

Abstract

[ID] Perkerasan Sistem Pelat Terpaku merupakan pengembangan Sistem Cakar Ayam yang berfungsi sebagai salah satu alternatif solusi untuk mengatasi permasalahan konstruksi jalan pada tanah lunak. Selain itu, kenaikan kapasitas dukung tanah dasar akibat pengaruh dukungan tiang-tiang pada pelat akan mengurangi kebutuhan tebal perkerasan beton dan memperkaku sistem perkerasan. Penelitian ini bertujuan untuk mempelajari pengaruh diameter tiang masif dan faktor aman terhadap lendutan pelat terpaku tiang tunggal. Dimensi struktur pelat terpaku dan data material mengacu pada Puri (2017). Sistem ini dibebani dengan pembebanan tekan sentris. Perhitungan lendutan dan gaya dalam pelat menggunakan metode BoEF, berdasarkan tambahan modulus reaksi tanah dasar ekivalen yang dibandingkan dengan lendutan hasil pengamatan. Hasil analisis menunjukkan bahwa besaran faktor aman mempengaruhi nilai lendutan hitungan. Lendutan hitungan meningkat dengan peningkatan faktor aman. Penggunaan faktor aman 1,0 memiliki pola lendutan mendekati lendutan pengamatan untuk tiang bulat. Analisis perhitungan lendutan dengan ukuran mini pile yang semakin besar menghasilkan lendutan pelat yang semakin kecil. Variasi SF tidak berpengaruh signifikan terhadap momen pelat. [EN] The Nailed-Slab Pavement System is the development from the pavement of the Cakar Ayam System which as an alternative solution to solve the problem of road construction in soft soil. In addition, the increase in bearing capacity of the subgrade due to the influence of the poles support on the plate will reduce the need for thick concrete pavement and strengthen the pavement system. This study aims to learn the effect of massive pole diameter and safe factors on the deflection of single-pile Nailed Slab. The dimensions of the Nailed-slab structure and material refer to Puri (2017). This system is burdened with press centric loading. Calculation of deflection and force in plates uses the BoEF method, based on the additional modulus of the subgrade equivalent reaction which is compared to the deflection observed. The results of the analysis show that the magnitude of the safe factor affects the value of the deflection calcutation. This deflection increases with an increase in safe factors. The use of the safe factor 1.0 has a deflection pattern that is closer to the observation deflection for the round pile. Analysis of the deflection calculation with the size of the mini pile which gets bigger results in a smaller slab deflection. SF variations have no significant effect on the plate moment.
Study Nilai Biaya Dan Waktu Alat Berat Pada Proyek Pembangunan Struktur Pipe Rack: Study of Cost and Time Value of Heavy Equipment on Pipe Rack Structure Project Yanto Martha; Sapitri; Oktavia, Ferly; Oktaviani, Atika
JURNAL SAINTIS Vol. 24 No. 02 (2024)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2024.vol24(02).20537

Abstract

[IN] Pada proyek konstruksi penggunaan alat berat untuk membantu jalannya pekerjaan sering dilakukan karena dapat meningkatkan produktivitas dari pada alat konvensional. Penggunaan alat berat di proyek berfungsi untuk mempersingkat waktu dan dapat mengoptimalkan suatu pekerjaan dalam proyek tersebut. Pipe rack structure adalah struktur baja atau beton yang ditinggikan yang dirancang untuk mendukung baki pipa, listrik, dan kabel instrumen. Permasalahan yang sering dihadapi dalam pembangunan pipe rack structure dengan menggunakan alat berat adalah biaya dan waktu yang terbatas, kondisi lingkungan, cuaca dan faktor – faktor lain yang dapat membuat keterlambatan pekerjaan. Kondisi seperti ini yang kemudian berdampak pada nilai biaya dan waktu alat  berat dan berpengaruh terhadap proses pembangunan infrastruktur. Analisa mengenai nilai biaya dan waktu dengan mempertimbangkan faktor-faktor penyebab perlu dilakukan agar didapat hasil yang efektif dan efisien. Penelitian ini bertujuan untuk menghitung waktu dan biaya yang dibutuhkan oleh alat berat pada pekerjaan pembangunan pipe rack structure. Metode pengamatan dilakukan dengan cara time study, yaitu pengamatan langsung di lapangan untuk memperoleh waktu siklus dan diskusi dengan pihak-pihak  terkait. Kemudian data diolah untuk mendapatkan gambaran dari hasil penelitian yang telah  dilakukan. Hasil menunjukkan bahwa besar biaya operasional alat berat pada proyek pembangunan pipe rack structure berdasarkan perhitungan data lapangan dengan biaya operasional Crawler crane Zoomlion ZCC550H-1 sebesar Rp 838.725,00 perjam, tower crane Hino P11C-UN sebesar Rp 1.626.800,00 dan Truck Trailer sebesar Rp Rp 1.801.609,00 /jam. [EN] In construction projects, the use of heavy equipment to help carry out work is often done because it can increase productivity compared to conventional equipment. The use of heavy equipment in projects serves to shorten time and can optimize work in the project. A pipe rack structure is an elevated steel or concrete structure designed to support pipe trays, electrical, and instrument cables. Problems that are often faced in building pipe rack structures using heavy equipment are limited costs and time, environmental conditions, weather and other factors that can cause work delays. These conditions then have an impact on the cost and time value of heavy equipment and influence the infrastructure development process. Therefore, an analysis of the value of costs and time by considering the causal factors needs to be carried out in order to obtain effective and efficient results. This research aims to calculate the time and costs required for heavy equipment for a pipe rack structure construction project. The observation method is carried out by means of time study, namely direct observation inthe field to obtain cycle times and discussions with related parties. Then, process the data to get an overview of the results of the research that has been carried out. The results show that the operational costs for heavy equipment in the structure pipe rack construction project were obtained based on field data calculations with operational costs for the Zoomlion ZCC550H-1 crawler crane of IDR 838,725.00 per hour, the Hino P11C-UN tower crane of IDR 1,626,800.00 and the Truck Trailer Rp. Rp. 1,801,609.00/ hour
Prediction the Maximum Deflection of the Prototype of Nailed-slab Pavement System Using the Allowable Equivalent Modulus of Subgrade Reaction Puri, Anas; Oktavia, Ferly; Elizar; Dharmowijoyo, Dimas B.E.; Ali, Mujahid; Liza Evianti Tanjung
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 1 (2025): JGEET Vol 10 No 01 : March (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.1.12061

Abstract

An equivalent modulus of subgrade reaction was proposed for analyzing the Nailed-slab Pavement System. This modulus is defined by accumulating the modulus of subgrade of the slab and the additional modulus of subgrade reaction which is contributed by a pile under the slab. The additional modulus can be defined by the Modified Hardiyatmo Method. The equivalent modulus of subgrade reaction only consideres a safety factor for additional modulus of subgrade reaction. In this research, a global safety factor will be considered for all modulus. This research is aimed to learn the prediction of the slab deflection by using the allowable equivalent modulus of subgrade reaction. The global safety factor was varied by 1.0; 2.0; 2.5; and 3.0. The slab deflection was calculated by using Beam on Elastic Foundation. Data of the nailed-slab and the soil were based on the previous researcher for a single pile nailed-slab model. Results show that the calculated deflection of the slab was in good agreement with the observed deflection. Increasing the global safety factor resulted in the over-estimated slab deflections. It means the design by using allowable equivalent modulus of subgrade reaction tends to result in a safety zone.
Stabilization of Coastal Embankments with Geotextile and Gabion Structures: Insights from a Tidal Zone Road Project Dian Kharisma Dewi; Ferly Oktavia
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1457

Abstract

This study presents a technical overview of a coastal road embankment constructed in a tidal zone of a small island in Indonesia. The objective is to document the integrated application of non-woven geotextile and multi-level gabions as a stabilization system on moderately strong subgrade soils affected by tidal dynamics. The research method involved descriptive analysis based on as-built documentation and field data, including California Bearing Ratio (CBR) tests at three locations. The results showed CBR values ranging from 41.11% to 60.84%, which classify the subgrade as moderately strong. Despite this, the use of geotextile was essential to prevent mixing of soft subgrade and fill material, provide load distribution, and ensure drainage, while the gabion structures acted as lateral confinement and toe protection against erosion caused by tidal infiltration. The findings suggest that soil strength alone is insufficient for coastal infrastructure design, and integrated stabilization measures should account for environmental forces such as saturation cycles and hydraulic pressure. This case offers a practical insight into adaptive geotechnical strategies for road construction in tidal zones, serving as a reference for similar projects in archipelagic and low-lying coastal regions.
Penguatan Literasi Teknologi melalui Sosialisasi Media Pembelajaran Flipbook Berbasis Augmented Reality pada Tingkat Sekolah Dasar di Kota Tanjungpinang Nabila, Aditia Ayu Rahma; Nusyirwan, Deny; Afham, Muhammad; Oktavia, Ferly; Harahap, Basyaruddin Ismail; Fahmitra, Novrizal Fattah; Slam, Berta Erwin; Arrahman, Muhammad Faiz; Saragih, Jefta; Pratama, Bayu Dwi
Sewagati Vol 9 No 4 (2025)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v9i4.7957

Abstract

Literasi teknologi merupakan salah satu kompetensi kunci abad ke-21 yang perlu ditanamkan sejak pendidikan dasar. Namun, masih banyak siswa sekolah dasar yang belum terbiasa menggunakan teknologi dalam konteks pembelajaran. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk mengenalkan media pembelajaran flipbook terintegrasi Augmented Reality (AR) kepada siswa SD Negeri 010 Kota Tanjungpinang sebagai upaya penguatan literasi teknologi. Kegiatan dilakukan melalui pendekatan sosialisasi, demonstrasi langsung, dan evaluasi sederhana. Hasil kegiatan menunjukkan bahwa siswa mampu memahami konsep dasar penggunaan teknologi dalam belajar, serta menunjukkan antusiasme tinggi terhadap media pembelajaran flipbook AR. Visualisasi objek digital yang ditampilkan dalam media flipbook AR terbukti meningkatkan motivasi dan antusian siswa untuk terlibat dalam proses pembelajaran. Selain itu, guru menunjukkan ketertarikan terhadap penggunaan media serupa dalam proses belajar-mengajar dan menyampaikan perlunya pelatihan lanjutan. Temuan ini mengindikasikan bahwa flipbook AR memiliki potensi besar sebagai media pembelajaran interaktif yang dapat mendukung transformasi digital di lingkungan pendidikan dasar. Diharapkan kegiatan ini dapat dikembangkan lebih lanjut sebagai bagian dari strategi inovasi pembelajaran yang berkelanjutan.
Optimization of Accelerometer Sensor Location In Arch Bridge Monitoring System Using The Sensor Elimination Using Capital Assurance Criterion (SEAMAC) Method Ritonga, Qonita; Kurniawan, Mahadi; Syarif, Firman; Rachmat Setiawan, Panji; Ahmadi , Heri; Raveena Putri, Citra; Oktavia, Ferly
JURNAL SAINTIS Vol. 25 No. 01 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(01).18997

Abstract

      In developing countries such as Indonesia, various fields of construction are currently being actively developed, especially bridge construction. Damage to the bridge structure itself requires very large repair costs. Currently, a monitoring system is being introduced to assess the condition of structures against dynamic loads, namely SHMS (Structural Health Monitoring System). The research aims to determine Finite Element Modeling, the optimal location, and several accelerometer sensors. To determine the condition of the arch bridge structure, it is necessary to detect damage through the results of the structural response recorded via the accelerometer sensor. In identifying the optimum number and location of sensors, the method used in this research is SEAMAC (Sensor Elimination Using Modal Assurance Criterion). Where this method is an algorithm method that performs an elimination on the sensor. The optimal placement of accelerometer sensors is determined using the Sensor Elimination Using Modal Assurance Criterion (SEAMAC) method, focusing on the floor plate and the bridge arch frame. Proper sensor placement is crucial as it yields important location data essential for identifying the modal characteristics of the bridge structure. In total, 16 accelerometer sensor locations were identified, with 8 sensors designated for both the floor plate and the arch frame.
Flood Identification Using Google Earth Engine and Correlation with Disaster Risk Level in Tanjungpinang City Dewi, Dian Kharisma; Zulfakar, Muhamad; Sukmawan, Muhammad Fatwa; Oktavia, Ferly
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.4

Abstract

Tanjung Pinang, the capital city of Kepulauan Riau Province, experienced a significant flood in early January 2021. The rainfall intensity during this event reached approximately 282.6 mm/hour, the highest recorded since 2011. This flood caused extensive damage to several facilities and residential areas. The impact of such disasters can be mitigated through identification, evaluation, and preventive measures. One such preventive approach is flood identification, which involves mapping flood extent areas. This study utilized Google Earth Engine (GEE), a web-based application platform, to achieve this. The advanced capabilities of GEE enabled the identification of flood distribution in January 2021. The results revealed that the cumulative flood distribution area was 37.89 hectares on January 2 and 149.88 hectares on January 10, with the largest affected area in Tanjungpinang Timur, covering 89.858 hectares. Based on the disaster risk level guidelines outlined in Regulation Number 02/2012, issued by BNPB, the floods on January 2 and 10, 2021, were classified as ‘High-Level’ disasters.  
Co-Authors Ahmadi , Heri Ali, Mujahid Anas Puri Anas Puri, Anas Arrahman, Muhammad Faiz Atika Oktaviani, Atika Dewi, Dian Kharisma Dharmowijoyo, Dimas B.E. Elizar Elizar Firman Syarif Harahap, Basyaruddin Ismail Kurniawan, Mahadi Liza Evianti Tanjung Mildawati, Roza Mildawati, Roza Muhamad Afham Nabila, Aditia Ayu Rahma Novrizal Fattah Fahmitra Pratama, Bayu Dwi Rachmat Setiawan, Panji Raveena Putri, Citra Ritonga, Qonita Sapitri Saragih, Jefta SLAM, Berta Erwin Sukmawan, Muhammad Fatwa Yanto Martha