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All Journal Jurnal Ilmiah Pertanian Jurnal Teknik RACIC : Rab Construction Research The Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning) Dinamisia: Jurnal Pengabdian Kepada Masyarakat SIKLUS: Jurnal Teknik Sipil Jurnal Infrastruktur Prokons: Jurnal Teknik Sipil JURNAL TEKNIK SIPIL UNAYA Mattawang: Jurnal Pengabdian Masyarakat Journal of Infrastructure and Civil Engineering SAINSTEK CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Jurnal Pengabdian KOLABORATIF General Engineering & Applied Science Journal (GEAR)
Virgo Trisep Haris
Universitas Lancang Kuning
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Evaluasi Akurasi Data Curah Hujan Satelit IMERG NASA Terhadap Data Observasi BMKG di Stasiun Sultan Syarif Kasim II Pekanbaru Periode 2009–2024 Marlaily Idris; Hendri Rahmat; Virgo Trisep Haris; Fitridawati Soehardi
SAINSTEK Vol. 14 No. 1 (2026)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v14i1.422

Abstract

Penelitian ini bertujuan untuk mengevaluasi akurasi data curah hujan satelit Integrated Multi-satellitE Retrievals for GPM (IMERG) dari NASA terhadap data observasi curah hujan dari Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) di Provinsi Riau. Data yang digunakan mencakup periode tahun 2009–2024. Analisis dilakukan dengan menghitung selisih antara kedua data, Root Mean Square Error (RMSE), Nash–Sutcliffe Efficiency (NSE), dan koefisien korelasi (r). Hasil penelitian menunjukkan bahwa nilai RMSE sebesar 53,458 mm/tahun, nilai NSE sebesar 0,918, dan korelasi (r) sebesar 0,633. Hasil ini mengindikasikan bahwa IMERG memiliki efisiensi yang sangat baik namun korelasi yang sedang dalam merepresentasikan curah hujan di Provinsi Riau. Oleh karena itu, diperlukan koreksi atau kalibrasi lokal sebelum data IMERG digunakan secara langsung dalam analisis hidrologi atau perencanaan sumber daya air di wilayah ini.
PERENCANAAN ULANG SALURAN DRAINASE JALAN HARAPAN KECAMATAN RUMBAI PESISIR KOTA PEKANBARU Miftahul Jannah; Virgo Trisep Haris; Muthia Anggraini
Racic : Rab Construction Research Vol. 6 No. 2 (2021): Desember
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v6i2.1949

Abstract

Drainage functions to drain water so that there is no puddle on the road surface which can disrupt community activities and damage to road construction. On Jalan Harapan, the Rumbai Pesisir sub-district already has a drainage channel on the right with a height of 1.3 m and a width of 1.3 m and a left channel with a height of 1.3 m and a width of 1.1 m. However, there are still frequent puddles of water on the road surface. The condition of the drainage channel on the hope road is hollow, causing waterlogging in the area. The purpose of this research is to do a re-planning to improve the condition of the existing drainage channel so that it can drain water. The method used is the Gumbel distribution method to calculate the frequency of rainfall, SNI 03-3424-1994 to calculate the intensity of rainfall and the manning method to calculate the flow velocity. From the planning results, the dimensions are 1.75 m high and 1.5 m wide with an upstream elevation of 99,013 and a downstream elevation of 98.8108 for the right channel and the left channel with a height of 1.45 m and a width of 1.2 m with an upstream elevation of 98.429 and an elevation of 98.429. downstream 98,227 for the left channel. In conclusion, the dimensions of the right channel are 1.75 m high and 1.5 m wide, the left channel is 1.45 m high and 1.2 m wide.
STABILISASI TANAH LEMPUNG DENGAN ABU TANDAN SAWIT DAN SEMEN TERHADAP TINGKAT KEPADATAN TANAH Muthia Anggraini; Virgo Trisep Haris; Alfian Saleh
Racic : Rab Construction Research Vol. 7 No. 1 (2022): RACIC (RAB CONSTRUCTION RESEARCH)
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v7i1.2421

Abstract

Building construction requires soil conditions that have good bearing capacity so that they can bear the load on it. Clay soils with high plasticity are soils that contain lots of clay grains. The properties of clay that need to be considered are the properties of compression, permeability, and shear strength. To increase the carrying capacity of the clay by compacting it, so that the maximum density is obtained. Mixing the original soil with palm bunch ash and cement will increase the maximum dry density value of clay soil. The purpose of this study was to determine the compaction of the soil mixed with various percentages of palm bunch ash and cement, respectively 5%, 7.5%, and 10%. The addition of palm bunch ash and cement can reduce the value of soil moisture content and increase the value of the dry density of the soil so that the soil becomes denser. The largest dry density value in a mixture of 10% palm bunch ash and cement was 1.42 g/cm³, whereas the dry density value of the original soil was 1.32 g/cm³. The conclusion is that there is an increase in the dry density value of the soil and a decrease in the value of the soil moisture content with the addition of palm bunch ash and cement.
KARAKTERISTIK SIFAT FISIS DAN MEKANIS LANDFILL SEBAGAI SUBGRADE Muthia Anggraini; Alfian Saleh; Virgo Trisep Haris
Racic : Rab Construction Research Vol. 7 No. 2 (2022): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v7i2.2792

Abstract

The nature of the subgrade plays an important role in road construction. The subgrade can be compacted embankment. The physical and mechanical properties of embankment soil are values ​​or parameters to see the quality requirements. The purpose of this study was to determine the characteristics of the embankment soil as a subgrade. The method used is laboratory testing to obtain the physical and mechanical properties of the embankment soil. Soil samples were taken from Tenayan Raya, Kulim, Pekanbaru City. The results showed that the physical properties of the soil were classified as ML, PI 6.62%, and the mechanical properties of the soil with a CBR value of 17.8%. Conclusion The physical properties of the embankment soil should not contain organic matter and high plasticity. Mechanical properties of embankment soil for CBR value > 10% based on Bina Marga 2018 Revision 2 specifications for selected embankments.
ENGINEERING PROPERTIES TANAH LEMPUNG DENGAN SEMEN SEBAGAI SOIL IMPROVEMENT Muthia Anggraini; Alfian Saleh; Virgo Trisep Haris
Racic : Rab Construction Research Vol. 9 No. 2 (2024): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v9i2.4951

Abstract

Volume instability in expansive soils due to changes in moisture content results in damage to the supporting structure. Soil improvement is one of the efforts made for soil improvement. Soil stabilization is one part of soil improvement. Appropriate soil improvement needs to be carried out to see the performance of the soil to meet post-construction stability requirements. Chemical stabilization using cementitious soil materials can improve the engineering properties of expansive soils. The research objective is to analyze the value of engineering properties of expansive soil with cement. Experimental research method to determine the value of California Bearing Ratio (CBR and Atterberg limits. Expansive soil was stabilized with cement with variations of 10, 12, and 14% cement by weight. As a result, the value of engineering properties increased, namely the maximum CBR value of 7.40% in the 14% variation at a curing time of 7 days. The smallest PI value in the 14% cement variation is 13.65%, there is a decrease in PI value with the addition of cement. In conclusion, engineering properties of soil with cement stabilization increase the CBR value of soil and decrease the Plasticity Index value.
STABILISASI TANAH LEMPUNG DENGAN SEMEN SEBAGAI STABILISATOR TERHADAP KUAT GESER TANAH PADA SUBGRADE Muthia Anggraini; Virgo Trisep Haris; Sri Wahyuni
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6890

Abstract

Clay soil is categorized as problematic soil because it has high water content, which causes the soil's shear strength to decrease during rainfall, resulting in low soil bearing capacity. This condition causes damage to structures built on top of it. Soil stabilization is one aspect of soil improvement. Proper soil improvement is necessary to assess soil performance to meet post-construction stability requirements. Chemical stabilization using cementitious materials can improve the engineering properties of expansive soils. The purpose of this study is to analyze the shear strength of cement-stabilized clay soil. Expansive soil is stabilized with cement at variations of 10, 12, 14, and 16% cement by weight. The method used was laboratory testing, consisting of three types of tests: physical soil testing to obtain soil classification, compaction testing to obtain optimum moisture content, and direct shear testing to obtain shear strength values. All tests used Indonesian National Standard (SNI) procedures. The results showed that adding varying amounts of cement resulted in an increase in shear stress values. The maximum value occurred in clay soil stabilized with 14% cement.
Flow Characteristics in an Open Channel Flume Based on Bed Slope Variation at the Civil Engineering Laboratory of Universitas Lancang Kuning Marlaily Idris; Virgo Trisep Haris; Hendri Rahmat; Fitridawati Soehardi
Journal of Infrastructure and Civil Engineering Vol. 6 No. 2 (2026)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v6i2.168

Abstract

This study aims to analyze the effect of bed slope variation on flow characteristics in an open channel flume at the Civil Engineering Laboratory of Universitas Lancang Kuning. The research was conducted experimentally using a laboratory flume with constant discharge conditions. Three slope variations were applied, namely 0.001, 0.003, and 0.005. The observed parameters include flow velocity and flow depth. In addition, the Froude number was calculated to determine the type of flow regime. The results indicate that increasing the bed slope leads to an increase in flow velocity from 0.20 m/s to 0.33 m/s. Meanwhile, the flow depth tends to decrease as the slope increases. The calculated Froude number ranges from 0.201 to 0.343, indicating that the flow regime remains in subcritical conditions. These results provide empirical insight into the relationship between bed slope and hydraulic characteristics in open channel flow and can serve as reference data for hydraulic laboratory experiments.
Pelatihan Pengujian Beton Bagi Laboran Teknik Sipil Di Kota Pekanbaru Alfian Saleh; Muthia Anggraini; Virgo Trisep Haris
Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Vol. 1 No. 2 (2021): Desember 2021
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpstm.v1i2.820

Abstract

Abstract: A laboratory assistant is someone who has expertise and works in a laboratory and helps student learning processes (practicum) and lecturer research. In addition to laboratory laboratory assistants are also assisted by assisting the work of the laboratory. Given the importance of the role of a concrete laboratory assistant in supporting practical activities or testing in the laboratory, it is very important to improve the abilities and competencies of a concrete laboratory worker. These competencies need to be prepared considering technological advances, scientific developments continue to develop so that the roles and insights possessed by concrete laboratory workers are needed to answer all these challenges. In overcoming partner problems, the service team provides solutions in the form of concrete testing training for laboratory workers. The steps for implementing the solutions offered in overcoming these problems are four stages, namely (1) the planning stage, (2) the implementation stage, and (3) the evaluation stage. From the results obtained, there is an increase in the results of 62.1% of the preetest and posttest questions. Then 80% of the participants got a good score and 20% of the participants got a pretty good score.            Keywords: Laboratory Asistant, Concrete TestingAbstrak: Laboran adalah seseorang yang memiliki keahlian dan bekerja di laboratorium serta membantu proses pembelajaran mahasiswa (praktikum) dan penelitian dosen. Selain laboran laboratorium juga dibantu oleh asisten yang membantu pekerjaan dari laboratorium. Mengingat pentingnya peran seorang laboran beton dalam menunjang aktifitas praktikum ataupun pengujian di laboratorium, maka kemampuan dan kompetensi yang dimiliki seorang tenaga laboran beton sangat penting untuk ditingkatkan. Kompetensi ini perlu dipersiapkan mengingat kemajuan teknologi, perkembangan ilmu pengetahuan terus berkembang sehingga peran dan wawasan yang dimiliki oleh laboran beton sangat dibutuhkan untuk menjawab semua tantangan tersebut. Dalam mengatasi permasalahan mitra maka tim pengabdian memberikan solusi berupa pelatihan pengujian beton bagi laboran. Langkah-langkah pelaksanaan solusi yang ditawarkan dalam mengatasi permasalahan tersebut yaitu ada empat tahap yaitu (1) tahap perencanaan, (2) tahap pelaksanaan, (3) tahap evaluasi. Dari hasil yang didapat terdapat peningkatan hasil sebesar 62,1% dari soal preetest dan posttest. Kemudian sebesar 80% peserta mendapatkan nilai baik dan 20% peserta mendapatkan nilai cukup baik.Kata Kunci: Laboran, Pengujian Beton
Co-Authors Aidil Hamka Siregar Alfian Saleh, Alfian Amsal Manogu Sianturi Amsal Anggraini, Muthia Bayu Bastanta Tarigan Fadli Gunawan Fadrizal Lubis Fitridawati Soehardi, Fitridawati Hendri Rahmat Juliper Marpaung Lusi Dwi Putri, Lusi Dwi Marhayu Saadatun Nubuwah Marlaily Idris Miftahul Jannah Muthia Anggraini Muthia Anggraini Okta jefri hendra Randi Anggista Rendi Fahreza Risenal Nick Setiawan Shanti Wahyuni Megasari Sri Wahyuni Vega Ervina Lase Widya Apriani