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Analisis Pengaruh Sifat Volumetrik pada Campuran AC-WC Sulandari, Eti; Lestyowati, Yoke; Felderika, Felderika; Sutarno, Sutarno
CRANE: Civil Engineering Research Journal Vol 5 No 2 (2024): CRANE
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/crane.v5i2.14070

Abstract

Jalan sebagai prasarana infrastruktur yang mempunyai peranan dalam meningkatkan aksesibilitas yang menghubungkan antara kota. Kerusakan dini akibat beban lalu lintas yang berlebihan, pengaruh lingkungan (tenperatur), kualitas material dan desain campuran aspal merupakan kendala untuk perkerasan jalan khususnya perkerasan lentur. Sifat volumetrik (VIM, VMA dan VFA) sebagai salah satu variabel yang mempengaruhi kekuatan campuran aspal. Penelitian ini bertujuan untuk mengetahui pengaruh kadar aspal terhadap sifat volumetrik. Marshall test sebagai metode yang digunakan pada penelitian ini. Hasil penelitian menunjukkan bahwa kadar aspal pada HMA AC-WC mempengaruhi sifat volumetrik. Seiring bertambahnya kadar aspal nilai VIM menurun karena terjadi ikatan yang kuat antar butiran agregat, Nilai VIM yang terpenuhi menurut spesifikasi BM 2018 revisi 2 adalah kadar aspal 6,28% dan 6,5%. Sebaliknya nilai VFA meningkat, dimana nilai VFA yang terpenuhi pada kadar aspal 5,7% , 6% dan 6,5%, dimana nilai VFA yang tinggi terjadi bleeding dan sebaliknya VFA kecil menjadi kurang kedap pada campuran aspal. Sedangkan nilai VMA pada penelitian ini, bertambahnya kadar aspal nilai VMA menurun, nilai VMA yang terpenuhi adalah 4,5% - 6,5%. VMA besar berpengaruh pada stabilitas dan sebaliknya jika kecil berpengaruh pada durabilitas. Kesimpulan dari penelitian ini adalah bahwa kadar aspal mempengaruhi sifat volumterik dan stabilisasi campuran aspal.
PERENCANAAN STRUKTUR BAJA GEDUNG 8 LANTAI UNIVERSITAS MUHAMMADIYAH PONTIANAK Arsanti, Peggi Yunda; Lestyowati, Yoke; Faisal, Faisal
JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Vol 10, No 4 (2023): JeLAST Edisi Desember 2023
Publisher : JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jelast.v10i4.73464

Abstract

ABSTRAKGedung 8 lantai Universitas Muhammadiyah Pontianak direncanakan menggunakan struktur baja dimana struktur asli gedung ini adalah struktur beton bertulang. Perencanaan ini dilakukan dengan menggunakan standar terbaru dengan metode Load and Resisance Factor Design (LRFD). Sistem struktur yang digunakan yaitu sistem rangka pemikul momen khusus (SRPMK) dengan desain struktur strong coloumn weak beam (SCWB). Dimensi struktur yang diperoleh dari perencanaan pendahuluan adalah pelat lantai setebal 100 mm, dimensi balok induk terdiri dari WF340 250 9 14, WF350 300 20 25, WF300 175 12 14, dan WF500 300 12 25, dimensi balok anak WF300 150 6,5 9, dimensi kolom gravitasi HC418 402 15 30 dan dimensi kolom SRPMK  HC448 422 35 45. Program analisis struktur digunakan untuk menghasilkan gaya dalam pada struktur balok, kolom dan sambungan dimana sambungan balok kolom direncanakan sebagai sambungan momen penampang balok tereduksi (PBR) dan shear tab connection sedangkan sambungan balok anak ke balok induk direncanakan sebagai sambungan geser all-bolted double-angle connection. Secara keseluruhan desain struktur bangunan baja gedung Universitas Muhammadiyah Pontianak memenuhi persyaratan sesuai standar yang digunakan berdasarkan pemeriksaan perilaku struktur dan kapasitas desain struktur.Kata Kunci: load and resistance factor design, sambungan, SRPMK, strong column weak beam, struktur baja.ABSTRACTThe 8-storey building of Muhammadiyah Pontianak of University is planned using steel structure where the original structure of this building is reinforced concrete structure. This planning is carried out using the latest standards with the Load and Resisance Factor Design (LRFD) method. The structural system used is a special moment bearing frame system (SMBFS) with a strong coloumn weak beam (SCWB) structural design. The structural dimensions obtained from preliminary planning are 100 mm thick floor slab, beams dimensions consisting of WF340×250×9×14, WF350×300×20×25, WF300×175×12×14, and WF500×300×12×25, secondary beam dimensions WF300×150×6.5×9, gravity column dimensions HC418×402×15×30 and SMBFS column dimensions HC448×422×35×45. The structural analysis program is used to generate internal forces in the beam, column and connection structures where the beam-column connection is planned as a reduced beam cross-section moment connection (PBR) and shear tab connection while the secondary beam to beams connection is planned as an all-bolted double-angle shear connection. Overall, the structural design of the steel building of Universitas Muhammadiyah Pontianak meets the requirements according to the standards used based on the examination of structural behavior and structural design capacity.Keywords: connection, load and resistance factor design, SMBFS, steel structure, strong column weak beam.
Selection of Effective Column Configuration in Nahdlatul Ulama University Flat in Kalimantan Barat Province Vonia, Teresa; Yusuf, M.; Lestyowati, Yoke
Jurnal Teknik Sipil Vol 24, No 3 (2024): Vol 24, No 3 (2024): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i3.86218

Abstract

This study analyzes the structural performance of square, rectangular, and circular columns in the Nahdlatul Ulama University Flat (UNU Flat), Kubu Raya, West Kalimantan. Data included structural designs, seismic analysis, and specifications. Using interaction diagrams, square columns (400 x 400 mm, 12D16) demonstrated sufficient axial and bending load capacities, handling up to 2,500 kN and 200 kNm. Replacing them with circular columns (300 mm diameter) reduced the cross-sectional area but maintained safety. Rectangular columns (400 x 550 mm, 14D16) also showed strong load resistance with safe interaction points. Substituting these with circular columns (500 mm diameter) preserved structural safety. All column configurations met load and safety requirements, with circular columns offering potential material efficiency and more straightforward construction. The results confirm stability and strength under varying loads, emphasizing the feasibility of circular columns for optimized performance.
Analysis of Surface Texture of Asphalt Mixture with Sand Circle Method Sulandari, Eti; Lestyowati, Yoke; Widodo, Slamet; Felderika, Felderika; Sutarno, Sutarno
Jurnal Teknik Sipil Vol 24, No 3 (2024): Vol 24, No 3 (2024): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i3.85641

Abstract

A road is usually defined as an infrastructure connecting a zone to other zones. As service and safety are essential for vehicle users, any conditions related to the pavement, including surface texture, are considered. The importance of this matter is that many researchers or practitioners are concerned with the quality of asphalt mixtures, whether structural or functional, which affect the safety and security of road users, mainly related to the texture of the pavement surface. This research aims to determine the texture depth (MTD, Mean Texture Depth). The research method used is the circle sand method, which is tested using the Sand Patch tool. The asphalt mixture type uses AC-WC with a composition of 39% coarse aggregate, 54.5% fine aggregate, and 6.5% filler. Optimum Asphalt Content of 6.28% and Density of 2.28 were obtained, and texture depth of 0.549 mm was more significant than 0.45 mm (Bina Marga 2010 revision 3). The conclusion is based on the design composition of the aggregate mix in the AC-WC asphalt mixture, which has a safe texture.
EXPERIMENTAL FLEXURAL STRENGTH OF GLASS FIBER REINFORCED POLYMER (GFRP) HYBRID REINFORCED CONCRETE BEAMS Lestyowati, Yoke; Herawati, Henny; Panandita, Budi Satria
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.67972

Abstract

Materials technology is an excellent opportunity to be developed industrially and on a needs scale according to the demands of society, namely supporting the environment, low maintenance, and long-term use. Using composite materials with reinforced polymers is a hot topic of discussion in civil engineering as new materials, strength/stiffness enhancers, or applications in building rehabilitation or renovation. Fiber Reinforced Polymer (FRP) is excellent as a new material because, in addition to being lightweight, corrosion resistant, and easy to work with, it also has high flexural strength, so it is a consideration to replace and or strengthen steel materials that are high in cost value. However, until now there has not been found the correct pattern or variant and volume of fibre so that it can be an alternative to the use of steel. The purpose of the study was to experimentally determine the flexural strength of Glass Fiber Reinforced Polymer (GFRP) hybrid beams either with steel reinforcement, with GFRP reinforcement, or with steel and GFRP combination reinforcement and different GFRP ratios (variants) through two-point load bending tests.The designed model is a development of a previous study that used one layer of 4 mm and produced a flexural strength smaller than the targeted flexural strength, so in this study, two layers of 8 mm were used. In addition, other experimental data that has been carried out from the literature is also used where the results of parametric studies provide evidence of the positive effect of hybrid steel and GFRP reinforcement ratios when obtaining GFRP models and volumes.The materials used to manufacture concrete beam test specimens 53x15x15 cm3 with quality of fc'35MPa have been tested according to SNI standards and meet both the minimum and maximum requirements specified. Based on the results of the material test, it is planned that the characteristic concrete quality fcr'=40.31 MPa, and based on the compressive strength test, the quality fcr'=41.68MPa is produced.The hybrid designed material with concrete or concrete and steel has been tensile tested with a maximum arcing load for the two layers = 8 mm variant; the tensile strength of the GFRP woven roving type with two layers 2 x 4 mm is 92.66 MPa. While plain steel reinforcement Diameter 8mm quality 280 MPa has a minimum tensile strength of 350 MPa (3.8 times the tensile strength of GFRP 8 mm).The results of testing and calculating the effect of GFRP as a substitute for steel reinforcement contributed to the flexural strength of concrete beams on average by 47.52%. In comparison, the contribution of flexural strength produced by concrete with steel reinforcement was 107.09%. The concrete variant of hybrid steel reinforcement and GFRP contributes to an increase in the average flexural strength of 117.02% 4.8% compared to steel-reinforced concrete beams alone.
SISTEM INFORMASI ADMINISTRASI DAN GEOGRAFIS DESA BARU DI KECAMATAN SILAT HILIR KABUPATEN KAPUAS HULU PROVINSI KALIMANTAN BARAT Herawati, Henny; Lestyowati, Yoke; Kartini, Kartini; Yulianto, Eko; Elvira, Elvira; Panandita, Budi Satria; Ibrahim, Ibrahim
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 4 (2023): December
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i4.20023

Abstract

ABSTRAKKecamatan Silat Hilir merupakan salah satu kecamatan di Kabupaten Kapuas Hulu, Kalimantan Barat dan memiliki 13 desa. Kendala utama dalam pelayanan administrasi bagi masyarakat adalah pelayanan administrasi dilakukan dengan cara manual. Belum tersedianya sistem informasi guna mempercepat penyelesaian pelayanan. Pada proses pelayanan adminstrasi telah menggunakan perangkat komputer, namun penyimpanan data masih menggunakan sebuah buku besar untuk menulis data surat administrasi warga. Hal ini menyebabkan masih banyak keluhan dari masyarakat terkait prosedur yang belum teratur, tidak ada kepastian jangka waktu, sehingga masyarakat menilai petugas tidak profesional berakibat timbulnya citra yang kurang baik terhadap pemerintah. Berdasarkan analisis situasi dan permasalahan yang ada, maka tujuan dari kegiatan ini adalah menyediakan sistem informasi administrasi dan geografis untuk Desa Baru di Kecamatan Silat Hilir. Pengabdian Kepada Masyarakat ini dilakukan dengan metode: penjelasan/pemaparan secara langsung kepada penyelenggara pelayanan yang membutuhkan informasi tentang sistem informasi, menyediakan manual, serta pelatihan bagi penyelenggara pelayanan untuk menggunakan sistem informasi desa yang dibuat. Mitra sasaran dari kegiatan ini adalah perangkat Desa Baru khususnya dan juga camat dan staf administrasi di Kecamatan Silat Hilir. Mitra yang hadir pada kegiatan ini terdiri dari camat, kepala desa, staf kecamatan dan staf desa yang berjumlah 23 peserta. Hasil dari kegiatan ini berupa: (1) Menyampaikan informasi mengenai sistem informasi berupa penjelasan singkat, manfaat, dan contoh-contoh sistem informasi yang ada; (2) Mensosialisasikan pentingnya sistem informasi administrasi dan geografis bagi penyelenggara pelayanan, terutama di desa Baru di Kecamatan Silat Hilir dan desa sekitarnya; (3) Mengadakan pelatihan kepada penyelenggara pelayanan di Desa Baru agar dapat menggunakan sistem informasi dengan baik sesuai dengan kebutuhan penyelenggara pelayanan. Kata kunci: sistem informasi; geografis; desa; pelayanan desa; desa baru. ABSTRACTThe Silat Hilir Sub-district, situated in the Kapuas Hulu Regency of West Kalimantan, comprises 13 villages. The main challenge in delivering administrative services to the community lies in the manual execution of administrative tasks. The absence of an information system hinders the prompt completion of services. Although computer tools are utilized in the administrative process, data storage still relies on a ledger for recording citizens' administrative correspondence. This leads to numerous objections from the community due to irregular procedures and the lack of defined timeframes, resulting in an alleged lack of professionalism among officials, negatively impacting the government's image. Based on an analysis of the current situation and issues, several solutions have been implemented: (1) Disseminating information about information systems through brief explanations, elucidating their benefits, and providing examples of existing systems; (2) Advocating the importance of administrative and geographic information systems for service providers; (3) Conducting training for service providers in Baru village to proficiently use the information system according to their service requirements. This community engagement involves direct presentations to service providers in need of information about information systems, supplying manuals, and offering training for service providers to utilize the village information system. Keywords: information sistem; geographic; village; village services; baru village.
STRATEGI PENINGKATAN EKSPOR HASIL LAUT MELALUI KEBIJAKAN PERIKANAN TERUKUR MENGGUNAKAN RANDOM FOREST ALGORITHM Anugrahnu, Joannes Fregis Philosovio; Etika, Ezra; Sumarni, Sania Lina; Debataraja, Naomi Nessyana; Lestyowati, Yoke; Priyanto, Dwi Ari
Jurnal Kebijakan Perikanan Indonesia Vol 17, No 2 (2025): (November) 2025
Publisher : Badan Penyuluhan dan Pengembangan Sumberdaya Manusia Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jkpi.17.2.2025.105-113

Abstract

Kebijakan penangkapan ikan terukur merupakan kebijakan penangkapan hasil laut yang disertai oleh pengendalian kuota penangkapan dan area tangkapannya. Kepatuhan terhadap kebijakan ini sebaiknya ditingkatkan seiring dengan bertahannya sektor ekspor hasil laut di tengah menurunnya sektor perekonomian akibat pandemi covid-19. Eco-preservation fishing merupakan salah satu solusi yang dapat ditawarkan. Penelitian ini menggunakan data sekunder produksi ikan tahun 2020 yang didapatkan dari Pelabuhan Perikanan Nusantara Pemangkat Kabupaten Sambas. Variabel yang digunakan dalam penelitian ini adalah berat tangkapan (Y), gross tonnage (X1), alat tangkap (X2), pembongkaran kapal (X3), jumlah hari perjalanan (X4), jumlah ABK (X5), dan banyak penangkapan ikan (X6). Random forest algorithm digunakan untuk mengklasifikasikan subset sampel dan variabel pelatihan yang dipilih secara acak sehingga menghasilkan beberapa pohon keputusan. Hasil analisis menunjukkan nilai hasil prediksi sebesar 81,32% dan termasuk dalam kategori baik. Variabel X6 memiliki nilai MDG terbesar daripada variabel lainnya sehingga memiliki kontribusi paling besar dalam mengklasifikasi penyebab hasil tangkapan di PPN Pemangkat tahun 2021. Kemudian variabel lainnya yang memiliki kontribusi terbesar berturut-turut adalah X3, X1, X5, X4, dan X2.