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All Journal Jurnal Dampak Jurnal Teknik Sipil Civil Engineering Dimension SIKLUS: Jurnal Teknik Sipil Jurnal Rekayasa Sipil Ensiklopedia of Journal Teknomekanik Jurnal Talenta Sipil Journal of Applied Agricultural Science and Technology Jurnal Bangunan: Konstruksi & Desain Jurnal Teknik Sipil J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Mas Mera
Jurusan Teknik Sipil, Fakultas Teknik, Universitas Andalas
Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Infiltration capacity based on soil geophysical constants using artificial infiltration in residential land Andayono, Totoh; Mera, Mas; Junaidi, Junaidi; Dalrino, Dalrino
Teknomekanik Vol. 7 No. 2 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i2.31372

Abstract

Conversion of catch-land into residential land in urban areas reduces infiltration, and increases surface flow and flood risk. Artificial infiltration is a potential solution to increase infiltration capacity, but its effectiveness is highly dependent on the physical characteristics of the soil, including geophysical constants. This study aims to determine the level of infiltration capacity based on the value of soil geophysical constants using artificial infiltration in residential land in Padang. Measurements were carried out using the Horton method and double-ring infiltrometer in several residential locations. The study results show that the soil characteristics of residential land in Padang consist of the soil texture of sand, loamy sand, and sandy loam, which have high moisture content, large fill weight, and low porosity, causing low infiltration rate and high surface flow. Artificial infiltration can significantly increase the infiltration capacity, especially on sandy soils with high hydraulic conductivity. The soil geophysical constant, k, is classified according to field measurement results. In the lower range of 1.2 < k ≤ 1.9, the average infiltration capacity was found at 625.1 mm/hour. Within the interval of 1.9 < k ≤ 2.6, the mean capacity decreased to 587.7 mm/hour, but in the upper interval of 2.6 < k ≤ 3.3, the average infiltration capacity was 499 mm/hour. Large soil geophysical constants reveal higher infiltration capacity, while small geophysical constants indicate low infiltration capacity.
Review Sistem Drainase Parak Jambu Dadok Tunggul Hitam Padang Menggunakan Model EPA-SWMM Mera, Mas; Februarman, Februarman; Aryadwitama Priadi, Fandi
Jurnal Bangunan, Konstruksi & Desain Vol 2 No 2 (2024): Juni 2024
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbkd.2.2.85-96.2024

Abstract

Flood disasters have been a never-ending problem for humans all over the world from the past to the present. This disaster can be caused by natural events or as a result of human activities and even by both simultaneously. One of the areas that often experiences flooding is the Parak Jambu Area, Dadok Tunggul Hitam Village in Padang City. This research objective is to overcome flooding that occurs in the area by means of numerical simulation using the EPA SWMM v.5.2 model. The existing conditions consist of 6 subcatchments in the Parak Jambu Area plus 28 supporting subcatchments located outside the area. All of them consist of 281 conduits (canals). The results of the simulation of existing conditions show that 32 canals are flooded and 6 canals do not carry any water at all. In dealing with the flooding that occurred, two approaches are taken, namely modifying the dimensions of the existing channels and adding new channels to the edge of the existing catchment. The simulation results of modified conditions show that there are no more canals that experience flooding in the Parak Jambu Area, and canals that previously did not carry water, now carry water.
Numerical Simulation to See the Performance of Groynes and Breakwaters as Shore-Protection Structures at Ketaping Beach, Padang Pariaman Hariatama, Adean; Mera, Mas
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.779

Abstract

This research is about numerical simulation to find out the performance of groynes and breakwaters as shore-protection structures in Ketaping Beach, Padang Pariaman (West Sumatra-Indonesia) using an existing software. The effectiveness of a shore-protection structure can be seen from the height and area of the bathymetry formed by the structure. The direction of incoming waves in the deep sea for all simulations is based on the dominant wave direction, namely from the west. The tide conditions were taken during Eid al-Fitr 1442 H because at that time there was an extreme tide. Based on the consideration of running time on the computer, the selected simulation time span is only 5 days (22 to 26 May 2020). The simulation for 5 days shows that the performance of breakwaters is more effective than groynes in protecting Ketaping Beach from abrasion. Sedimentation formed behind the breakwater as high as 20 to 80 cm above the initial elevation. Meanwhile, groyne performance is only effective at holding sediment along the groyne as high as 10 cm to 30 cm above the initial elevation.
Pemilihan Groin dan Breakwater sebagai Bangunan Pengaman Pantai Tiram Padang Pariaman Yusuf, Muhammad; Mera, Mas
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.780

Abstract

This study is about numerical simulations to predict the effectiveness of groynes and breakwaters as protective structures for Tiram Beach, Padang Pariaman Regency (West Sumatra-Indonesia) using an existing software for abrasion management. The effectiveness of a shore-protective structure can be seen based on the bathymetry formed due to the structure. The numerical simulation is carried out at maximum wave conditions, with the dominant direction of the incoming wave in the deep sea being from the west. The simulation are carried out with 2 scenarios, namely with the addition of groynes (scenario 1), and with the addition of breakwaterse (scenario 2. The simulation time is only 5 days, starting from May 22 to May 26, 2020 because at that time the waves were extreme. The simulation results show that the breakwaters with a length of 80m and a distance of 70m from the shoreline are more effective in protecting Tiram Beach from abrasion. The simulation using groynes is only effective at holding sediment transport along the structures. The groynes are also unable to reduce wave energy coming from the west.
Penyisihan Nitrat Menggunakan Kolom dengan Media Biochar dan Busa Poliuretan Edwin, Tivany; Mera, Mas; Komala, Puti Sri; Zulkarnaini, Zulkarnaini; Nabila, Alya Sausan
Dampak Vol. 21 No. 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.21.2.1-6.2024

Abstract

This study examined the removal of nitrate from wastewater using column adsorption method with variations in the ratio of biochar and polyurethane foam, as well as variations in flow rate. The results showed that the highest adsorption capacity was obtained at a flow rate of 30 mL/min compared to other flow rate variations. At that flow rate, the nitrate sorption capacity reached 4.10 mg/g with biochar, 0.20 mg/g using biochar : polyurethane foam (1 : 1) media, and 13.12 mg/g using biochar : polyurethane foam (2 : 1) media. The biochar : polyurethane foam (2 : 1) media showed the highest nitrate adsorption capacity, which was caused by an increase in the contact time of the flow in the media due to more polyurethane foam volume. This study concludes that sufficient contact time between the contaminant and the adsorption media in the column is a key factor for nitrate removal optimization in addition to the adsorbent material used.Keywords: Adsorption, Biochar, Polyurethane foam, Nitrate ABSTRAKPenelitian ini mengkaji penyisihan nitrat dari limbah cair menggunakan metode adsorpsi kolom dengan variasi rasio biochar dan busa poliuretan, serta variasi laju alir. Hasil penelitian menunjukkan kapasitas adsorpsi tertinggi diperoleh pada laju alir 30 mL/menit dibandingkan variasi laju alir lainnya. Pada laju alir tersebut, kapasitas sadorpsi nitrat mencapai 4,10 mg/g dengan biochar, 0,20 mg/g menggunakan media biochar : busa poliuretan (1 : 1), dan 13,12 mg/g menggunakan media biochar : busa poliuretan (2 : 1). Media biochar : busa poliuretan (2 : 1) menunjukkan kapasitas adsorpsi nitrat paling tinggi, yang disebabkan oleh peningkatan waktu kontak aliran dalam media akibat kandungan busa poliuretan yang lebih banyak. Penelitian ini menyimpulkan bahwa waktu kontak yang cukup antara kontaminan dan media adsorpsi dalam kolom merupakan faktor kunci untuk optimasi penyisihan nitrat selain material adsorben yang dipakai.Kata kunci: Adsorpsi, Biochar, Busa poliuretan, Nitrat
Investigasi Banjir Pada Perumahan Safa dan Marwa Dalam Realitas dan Model Mera, Mas; Givi, Muhammad; Februarman, Februarman; Daulay, Agra
Jurnal Rekayasa Sipil Vol. 17 No. 2 (2021)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.17.2.176-185.2021

Abstract

Penelitian ini adalah tentang pengujian kapasitas drainase di kompleks perumahan yang berada di daerah topografi yang relatif datar. Oleh karena itu, dipilihlah perumahan Safa dan Marwa yang terletak di Lubuk Minturun, Kecamatan Koto Tangah, Kota Padang, Sumatera Barat sebagai studi kasusnya. Kompleks perumahan ini telah sering mengalami banjir bila hujan turun dengan intensitas melebihi 20 mm/jam dan dengan lama hujan melebihi 3 jam. Kemudian program jadi (existing software) “EPA Storm Water Management Model (SWMM) versi 5.0” digunakan untuk mensimulasikan kasus ini, di mana hasilnya dibandingkan dengan realitas yang terjadi di lapangan. Data primer yang diperlukan oleh model SWMM ini adalah sub-catchment, intensitas hujan, kemiringan dan dimensi saluran drainase. Hasil simulasi menunjukan hal yang sama yang terjadi di lapangan yaitu 4 dari 37 junction (persimpangan saluran) dan 6 dari 38 conduit (ruas saluran) mengalami banjir. Sehingga hasil simulasi model SWMM ini dapat dipercaya untuk menunjukkan realitas banjir yang terjadi di lapangan.
Pemilihan Bangunan Pelindung terhadap Bencana Hidrometri Basah dalam Rekayasa Sumberdaya Air Mera, Mas; Yuhendra, Rahmad; Wahyudi, Reski; Wilman, Wilman; Putra, Rifky
Jurnal Rekayasa Sipil Vol. 20 No. 3 (2024)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.20.3.149-156.2024

Abstract

Inaccuracy in selecting the type of water resources structures as protection structures against wet hydrometric disasters means that the effects of the disaster are not reduced significantly. This situation gets worse if the placement of the protection structures is not correct. This research focuses on selecting the type and location of protection structures against wet hydrometric disasters in water resources engineering so that they work optimally. This optimization is carried out by maximizing the function of the structures as protector against hydrometric disasters, and minimizing new disasters that may arise due to the presence of these protection structures. The first stage is to identify the behavior and to predict the characteristics of water at location of the wet hydrometric disaster and its surroundings. This is done by analyzing video and aerial photos in several circumstances. The next stage is to select the appropriate type of protection structures. The final stage is to determine the location and dimensions of the protection structures with the consideration that new disasters that may arise due to the presence of the protection structures must be relatively small. Another consideration for determining the dimensions of a structure is the characteristics of the water. Determination of the location and dimensions of the protection structures are carried out using theoretical simulations. The results of research in the field show that protection structures work optimally and with relatively small dimensions and numbers, and is in accordance with theoretical estimates.
Kajian Eksperimental Daya Dukung Tanah Pasir Berdasarkan Variasi Ukuran Butiran Partikel Terhadap Penurunan Soehardi, Fitridawati; Hakam, Abdul; Thamrin, Rendy; Mera, Mas
Siklus : Jurnal Teknik Sipil Vol. 11 No. 1 (2025): Siklus: Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v11i1.26917

Abstract

Kinerja daya dukung tanah pasir sangat dipengaruhi oleh karakteristik ukuran dan distribusi butiran partikel. Pemahaman terhadap hubungan ini penting untuk menjamin kestabilan pondasi bangunan, khususnya di daerah dengan dominasi tanah berpasir. Penelitian ini bertujuan untuk mengkaji secara eksperimental pengaruh variasi ukuran butiran pasir terhadap daya dukung dan penurunan pondasi. Metode penelitian yang digunakan adalah eksperimental di laboratorium. Pengujian dilakukan terhadap tiga konfigurasi tanah, yaitu konfigurasi 1 (pasir kasar), konfigurasi 2 (pasir sedang), dan konfigurasi 3 (pasir halus), menggunakan metode pembebanan bertahap dengan pencatatan beban dan penurunan pada interval tertentu untuk mengevaluasi perubahan kapasitas daya dukung dan tingkat penurunan tanah. Hasil penelitian menunjukkan bahwa beban–penurunan, dan daya dukung ultimit–penurunan, diperoleh bahwa konfigurasi 1 (pasir kasar) menunjukkan performa terbaik dengan nilai tegangan, beban, dan daya dukung ultimit tertinggi serta ketahanan terhadap deformasi yang lebih baik. Hal ini disebabkan oleh kuatnya mekanisme interlocking antar butiran kasar yang meningkatkan kekuatan geser internal tanah. Konfigurasi 2 (pasir sedang) menunjukkan kapasitas dukung tanah yang sedang dengan perilaku transisi antara pasir kasar dan pasir halus, sedangkan konfigurasi 3 (pasir halus) memiliki daya dukung paling rendah dan mengalami penurunan lebih cepat saat diberikan beban. Kesimpulan yang diperoleh yaitu semakin kasar ukuran butiran pasir dan semakin bersudut bentuk partikelnya maka semakin besar daya dukung dan ketahanan terhadap deformasi tanah. Sebaliknya, pasir halus dengan bentuk butiran membulat menunjukkan kecenderungan mengalami penurunan lebih cepat di bawah beban. Temuan ini menegaskan pentingnya mempertimbangkan karakteristik fisik tanah dalam desain pondasi untuk meningkatkan kestabilan dan keamanan struktur.
PENGGUNAAN BRONJONG SIRIP UNTUK MENGANTISIPASI SEDIMENTASI PADA TIKUNGAN DALAM SALURAN Wulandari, Yolanda; Mera, Mas
Ensiklopedia of Journal Vol 7, No 4 (2025): Vol. 7 No. 4 Edisi 1 Juli 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v7i4.3286

Abstract

Sedimentasi sering terjadi di tikungan sungai, khususnya di sepanjang busur bagian dalam yang menyebabkan terkonsentrasinya aliran di busur bagian luar. Proses ini mengakibatkan erosi pada busur luar sehingga menyebabkan tepian sungai runtuh. Tujuan dari penelitian ini adalah memodelkan secara fisik pengendalian sedimentasi pada busur dalam di tikungan saluran dengan memanfaatkan bronjong sirip sehingga mencegah konsentrasi aliran pada busur luar. Penelitian ini terdiri dari lima setup eksperimental. Pada setup 1, bronjong biasa ditematkan di sepanjang 206 cm pada busur luar. Setup 2 mengatasi sedimentasi dan erosi yang diamati pada setup 1 dengan menempatkan bronjong sirip di bagian hilir tikungan. Setup 3 selanjutnya mengatasi masalah dari setup 2 dengan menempatkan bronjong sirip di tengah tikungan. Setup 4, dasar saluran diratakan ulang, dan dua bronjong sirip bagian hilir dan tengah tikungan dipasang kembali. Terakhir, Pada setup 5 dasar saluran diratakan kembali, dengan bronjong sirip hilir dan tengah ditempatkan di permukaan tanpa dibenamkan, sambil tetap diikat ke bronjong biasa. Hasil simulasi menunjukkan bahwa bronjong sirip secara efektif mengurangi sedimentasi di dekat busur dalam tikungan, mencegah konsentrasi aliran di busur luar. Untuk kinerja yang optimal, pondasi bronjong sirip harus kokoh agar tidak turun atau bergeser.Kata Kunci:  Bronjong sirip, Erosi, Sedimentasi, Tikungan dalam, Tikungan luar
Reducing Bandar-Lurus Flow-Velocity To Minimize Erosion of Batang-Kurao Riverbank, Padang Februarman, Februarman; Mera, Mas; Ginawa, Dega
JURNAL TEKNIK SIPIL Vol 14, No 1 (2025): Volume 14 Nomor 1 Mei 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v14i1.42180

Abstract

The Bandar-Lurus River empties into the Batang-Kurao River at an almost perpendicular confluence. As a result, when the Bandar Lurus flowed the 2021-August-18 flood-discharge, for example, the Kurao river-bank collapsed. If this is allowed to last longer, then the resident houses near the river bank could be damaged. The flow velocity is predicted using the Manning formula, and the resistance coefficients are averaged using the Einstein-Banks formula. Both formulas are then solved using the Newton-Raphson method on the MS Excel platform. The objective of this study is to slow down the Bandar downstream velocity of the as slowly as possible to minimize damage to the Kurao river-bank. The first step is to lower the longitudinal slope of the Bandar bed from 0.0012 to 0.0007. As a result, the downstream velocity is expected to slow down from 1.85 to 1.68 m/s, and the water level is also estimated to drop from 6.79 to 5.98 m. The next step is to replace the Bandar-bed material from the ground with irregular sharp-rock fragments. Consequently, the velocity is expected to slow down from 1.68 to 1.19 m/s, but the water level is estimated to rise from 5.98 to 6.94 m. This is the Bandar velocity that can be engineered considering that the channel-top elevation in the downstream is only 8.24 m including the freeboard.
Co-Authors AA Sudharmawan, AA Abdul Hakam Agra Daulay Amri, Afdhal Aryadwitama Priadi, Fandi Birhami Akhir Dalrino Dalrino Daulay, Agra Deri Saputra Febrin Anas Ismail Februarman, Februarman Februarman, Februarman Fitridawati Soehardi, Fitridawati Ginawa, Dega Givi, Muhammad Hariatama, Adean Hendra Hendra Ida Ayu Putu Sri Widnyani Itto Samulano Junaidi Junaidi Junaidi, Junaidi Muhammad Givi Muhammad Yusuf Nabila, Alya Sausan Puti Sri Komala Putra, Rifky Rizki Robi Siti Hawa Binti Yusmardi Srihandayani, Susy Thamrin, Rendy Tivany Edwin Totoh Andayono Wahyudi, Reski Wilman, Wilman Wulandari, Yolanda Yessi Puspita Dewi Yuhendra, Rahmad Zelfa Lonna Monica