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STUDI TINJAUAN KELAYAKAN EMBUNG GROJOGAN DESA PLANDAAN KECAMATAN PLANDAAN KABUPATEN JOMBANG Hartanto, Tomy Dwi; Rispiningati, Rispiningati; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

The need for clean water to support human activities continues to increase due to an increasing in population and irrigation needs. Dams and small dam can be an alternative for water management to correct water in the rainy season and being in the dry season. The purpose of Grojogan’s small dam construction is for irrigation of paddy fields in Plandaan sub-district. The greater the water corrected from small dam, the greater its contribution to the profitability of the agricultural system so as to know the magnitude of the carrying capacity of the small dam on the agricultural cropping pattern in the irrigation area. The purpose of this research is to know the magnitude of bearing capacity of small dam on agricultural cropping pattern both economically, socially, and environment. The method used is descriptive analytics. Data are collectied by interview, observation and documentation study. In this research of initial feasibility studies, water balance, and economic analysis. The result of the research shows that the water balance in Grojogan’s small dam is positive, meaning that the water debit that can be accommodated in the small dam is able to supply the irrigation water requirement for 86 Ha, land. The result of economic analysis with usage age for 10-year small dam found the benefit-cost ratio (B / C) ratio = 3.096, while the benefit difference is Rp. 9.858.913.731,21, and the internal rate of return is 36.35%. In the calculation of sensitivity analysis it is found that with the change of values ​​up to 20%, the project is still safe under the value fluctuations.
UJI MODEL FISIK BAFFLED CHUTE UNTUK PENINGKATAN PEREDAMAN ENERGI PADA PELIMPAH BENDUNGAN RIAM KIWA KECAMATAN PARAMASAN KABUPATEN BANJAR PROVINSI KALIMANTAN SELATAN Rahman, Muhammad Adhia; Sholichin, Moh.; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK : Dengan melihat kondisi uji model Bendungan Riam Kiwa yang dilakukan sebelumnya, kondisi aliran pada saluran pengarah hilir dalam kondisi aliran subkritis namun dengan nilai bilangan froude ≈ 0,9 - 1 dan hal ini kurang dianjurkan secara keamanan hidraulis. Maka perlu dilakukan penelitian uji model perencanaan alternatif desain lain yang pada penelitian ini dengan menggunakan desain baffled chute pada saluran peluncur. Uji model fisik baffled chute Bendungan Riam Kiwa ini dilakukan dalam 2 kondisi yakni dengan tinggi baffled chute 3 meter dan 2 meter, yang dikombinasikan dengan peredam energi USBR tipe II dan I pada peredam energi akhir. Penelitian uji model fisik baffled chute Bendungan Riam Kiwa menggunakan model dengan skala 1:65 dan dilakukan dengan 5 seri percobaan. Hasil penelitian akan terfokus pada kondisi tinggi muka air dan besarnya kecepatan aliran dan akan dilakukan perbandingan pada tiap seri. Diketahui bahwa pada setiap seri percobaan kondisi kecepatan aliran telah berkurang dibandingkan model seri original design.   Kata kunci: Uji model fisik, baffled chute, peredam energi, efektifitas, dan trayektori aliran   ABSRACT : By looking at the condition of the model test Riam Kiwa Dam before, the flow conditions in the escape channel was in the sub-kritical flow conditions but with a value of froude number ≈ 0,9 – 1 and it is less recommended in the security of hidraulic. Then the research needs to be done to test another alternative planning model design at this time using design of baffled chute on the chute channels. The model test of baffled chute Riam Kiwa Dam is done in two conditions: with a height of 3 meters and 2 meters of baffled chute and combined with the USBR energy dissipator type II and I in the final stilling basin. The model test research of baffled chute on Riam Kiwa Dam using models with scale 1:65 and done with 5 experimental series. The research results will be focused on the condition of high water level and the velocity of the flow and also would do a comparison from each series. It is known that each series of experimental, the condition of the flow rate has been reduced compared to the original design series models. Keywords: Model test, baffled chute, energy dissipator, the effectiveness, and jet trajectories
Analysis of Drainage Capacity and Rehabilitation Subjected to Rainfall and Reverse Flow of Marengan River as a Main Drain in Sumenep City, Indonesia Cahya, Evi Nur; Andawayanti, Ussy; Resmani, Eva
Civil and Environmental Science Journal (CIVENSE) Vol 1, No 2 (2018)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2018.00102.5

Abstract

Land use changing in Sumenep city in recent years has caused runoff in several locations. Therefore, rehabilitations of existing channel to suit the surface runoff are needed. This paper presents capacity determination of existing drainage channels subjected to rainfall with 5-year flood discharge plan and consideration of sea tides effect to Marengan River which crossed Sumenep city. The proposed flood control methods in Sumenep city area was also discussed. The catchment of specified rural area was modelled using SWMM instrument to compare channel conditions before and after rehabilitation. Channel size and height of water level in channel due to rainfall together with the effect of backwater occurred in Marengan River caused by the sea tides was observed during the time. From the analysis, it was found that most of existing secondary drainage channels are uncapable to accommodate rainfall with 5-year flood discharge plan. From the available eight secondary drainage channels outlets, the last three outlets were subjected to reverse flows effect in Marengan River due to sea tides. In order to reduce the occurance of surface runoff inundation, secondary drainage channel rehabilitation was planned at each outlet, and these proven capable to accommodate rainwater runoff and reverse flow as well
Integrated Urban Drainage Management for Flood Inundation Controlling in Sidokare Area at Sidoarjo Regency Cahya, Evi Nur; Guntoro, Dani Eko; Harisuseno, Donny
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 2 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00202.3

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Flood and inundation had become a serious problem in Sidoarjo Regency annually. This study aimed to apply integrated urban drainage management for flood inundation controlling at Sidokare Region in Sidoarjo Regency. This integrated drainage management consisted of retarding pond, drainage channel redesign, and pump utilization. The study region was divided into Sidokare Pump station, Sepande, and Diponegoro Street catchment area. Rainfall intensity during historical floods was analysed using Mononobe formula and Log Pearson Type III method was used to analyze design rainfall. From the result of the analysis, it wasfoundthat thehistoricalfloodsinstudyregioncausedbyrainfall withreturnperiodof1.01 years, with rainfall intensity of 17.55 mm/hour. It was also found that by implementing this integratedurbandrainagemanagementatSidokareRegion,floodcouldbereducedupto100%. ForSidokarePumpStationcatchmentarea,theinundationmanagementwasconductedbyusing combination of storage pool, existing drainage channel, and the existing flood pump. For Sepandecatchmentarea,itwasmanagedtousethecombinationofstoragepoolandtheexisting drainage channel. Meanwhile, Diponegoro Street catchment area was solved by utilizing new flood pump combining with new tertiary channel and existing drainagechannel.
The Influence of Damage to the Geomembrane Layer on the Seepage Pattern and Discharge at the Homogeneous Embankment Dam Wijayanto, Achsin; Juwono, Pitojo Tri; Cahya, Evi Nur
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 1 (2021)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2021.00401.7

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Placing the geomembrane layer on the upstream slope can control the seepage in homogeneous dams. Poor geomembrane design, construction and maintenance caused damage to the geomembrane that caused a leak through the dam body. This study discusses the effect of damage on the geomembrane layer at the homogeneous embankment dam on the seepage pattern and discharge. The study location is in the Sianjo Anjo dam, Aceh Singkil district, a homogeneous dam with a geomembrane layer located in the dam body's upstream part. The damage of the geomembrane layer is assumed caused by the various defect of locations and size. The results show that the seepage pattern (phreatic line) tends to be weak in the geomembrane layer without damage.  Meanwhile, if the geomembrane layer is damaged, the larger the defects' width, the higher the phreatic line. However, the seepage pattern that occurs shows insignificant or almost the same. The seepage discharge increases with increasing defect width and decreasing defect location.
UPAYA PENINGKATAN KUAT TEKAN MORTAR DENGAN MENGGUNAKAN BAKTERI PENGENDAP CACO3 Kistanti, Ida Fitri; Arifi, Eva; Cahya, Evi Nur
Jurnal Mahasiswa Jurusan Teknik Sipil Vol 1, No 2 (2021)
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

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Abstract

Penggunaan material beton semakin meningkat karena memiliki sifat yang kuat, ketahananyang tinggi, mudah dibentuk, relatif murah dan mudah didapatkan. Namun umum terjadifenomena keretakan pada penggunaan beton yang dapat mengakibatkan mudah masuknyapartikel korosif yang akan merusak struktur dalam beton. Oleh karena itu, salah satualternatif untuk mengurangi retakan yang terjadi dilakukan dengan upaya peningkatan kuattekan mortar yang merupakan unsur penyusun beton menggunakan bakteri sebagai agenbiologis yang ramah lingkungan. Penelitian ini dilakukan dengan melakukan pengujiankarakteristik material pasir, kuat tekan dan modulus elastisitas mortar menggunakan isolatbakteri Micrococcus luteus strain S17 dan isolat R20. Hasil Pengujian diolah menggunakangrafik hubungan kuat tekan mortar dengan jumlah densitas sel bakteri (105, 106, dan 107sel/mL) terhadap kuat tekan mortar kontrol pada usia 7,14 dan 28 hari. Hasil dari penelitianmenunjukkan bahwa mortar dengan menggunakan bakteri pengendap CaCO3 dapatmemberikan pengaruh peningkatan kuat tekan mortar. Mortar bakteri yang memberikan efekpeningkatan kuat tekan lebih baik adalah bakteri R20 dengan densitas sel 105 sel/mL padausia 28 hari yakni sebesar 13% dengan kuat tekan sebesar 33,47 Mpa dibandingkan denganmortar kontrol sebesar 29,6 Mpa dan mortar bakteri S17 sebesar 31,4 Mpa. Penggunaan duajenis isolat bakteri memiliki pengaruh dan karakteristik yang berbeda pada kuat tekan mortardilihat dari perbandingan variasi konsentrasi dan usia mortar terhadap kontrol.Kata kunci: Mortar, Kuat Tekan, Bakteri Pengendap CaCO3, Modulus Elastisitas
PERILAKU GEMPA AKIBAT PENGARUH PERGERAKAN TANAH DAN PERGERAKAN PATAHAN PADA JEMBATAN RANGKA PELENGKUNG Evi Nur Cahya
Prokons: Jurnal Teknik Sipil Vol. 10 No. 1 February 2016
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v10i1.106

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Studi ini membahas tentang analisis respon dinamik perilaku gempa pada jembatan rangka pelengkung sebagai akibat dari pengaruh pergerakan tanah dan patahan. Data gempa didapat dari integral waktu gelombang respon percepatan gempa Jiji Taiwan pada tahun 1999 yang kemudian diaplikasikan kepada struktur jembatan rangka pelengkung untuk diteliti perilaku responsnya.Analisis respons dinamik dibuat menggunakan gerakan tanah pada saat gempa pada arah transversal dan longitudinal, bersamaan dengan pergerakan patahan pada arah vertical dan transversal, untuk meneliti perilaku gempa dari model jembatan baja pelengkung yang digunakan. Model analitis dengan sejarah waktu (time history) disimulasikan menggunakan model 3D dengan program ABAQUS.Berdasarkan hasil analisis, perilaku respons dari kedua kasus pada arah transversal dan longitudinal akibat akselerasi menunjukkan bentuk respons yang sedikit berbeda. Selain, itu juga ditemukan bahwa elemen struktur yang mengalami plastis berkumpul pertemuan antara rangka utama jembatan pelengkung dan girder pengakunya.Kata kunci: perilaku gempa, pergerakan tanah, pergerakan patahan (inland fault displacement), jembatan pelengkung rangka batang.
Studi Perbandingan Efisiensi Perbaikan Mutu Air Limbah Domestik melalui Filtrasi Horizontal dengan Beton Porous Recycled Aggregate Berlapis Ariza Julian Hakim; Evi Nur Cahya; Riyanto Haribowo
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 1 No. 1 (2021): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtresda.2021.001.01.10

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Domestic wastewater pollution is one of the reasons for the decline in the national Water Quality Index. The increasing number of people with inadequate sanitation facilities requires a solution. Porous concrete with RCA aggregate has the potential to improve domestic wastewater. Made of porous concrete, the filter is made with dimensions of 40×40×5 cm3 using RCA aggregate with 0.5-2.0 cm gradation. Two reactor models of the same size were prepared, containing 3 and 4 layers of filters. Domestic wastewater as a test object comes from Tlogomas Integrated Sewer System, flowed continuously into the model. The results of Test 1 show that the 3-Filters Reactor Model can improve the pH and COD values according to the quality standard, while the 4-Filters Reactor Model can only improve the pH value. The results of Test 2 show that the 3-Filters Reactor Model can improve the pH and TSS values according to the quality standard, while the 4-Filters Reactor Model can only improve the pH value. The average efficiency of the filtration against influent shows that the 3-Filters Reactor Model is better than the 4-Filters Reactor Model with the percentage of improvement in pH 11.54%, BOD 26.15%, COD 20.79%, and TSS 46.37%. However, in sediment trapping, the 4-Filters Reactor Model is superior with 112 mm compared to the 3-Filters Reactor Model which is 100.5 mm.
Studi Penjadwalan dan Pembiayaan Proyek Trashlog PLTA Orya Genyem Kecamatan Unurum Guay Kabupaten Jayapura Menggunakan Microsoft Project Manager 2016 Raya Abdullah; Suwanto Marsudi; Evi Nur Cahya
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 1 No. 1 (2021): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtresda.2021.001.01.13

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Successful of a project can be seen from how economical and efficient of the project. Minimizing unnecessary expenses to achieve the profits which planned is the goal of this study. The implementation of the Microsoft Project Manager 2016 program aims to assist in scheduling and financing to achieve efficient projects in terms of cost, labor and time. The 3 alternatives used include analysis of heavy equipment productivity, project duration, labor resource requirement, analysis unit cost of work, cost budget plan and s curve. The preparation of this thesis aims to find out the efficiency of the three alternatives reviewed in terms of cost and time project worked. Which results will be different on each alternative. Alternative 1 (90 days with 8 hours/day, total project cost Rp. 7,184,379,188.80), Alternative 2 (90 days with 11 hours/day, total project cost Rp. 7,355,870,347.94) and Alternative 3 (96 days with 8 hours/day, total project cost Rp. 7,019,783,796.95). In terms of cost and time of the three alternatives, can concluded if setting the right number of days and hours of work can be an efficient alternative.
Studi Efisiensi Penyaringan Air Limbah Domestik Menggunakan Plat Beton Porous 4 Lapis Dengan Sistem Aliran Horizontal Aditya Wibowo; Riyanto Haribowo; Evi Nur Cahya
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 1 No. 1 (2021): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtresda.2021.001.01.09

Abstract

Keterbatasan lahan menjadi permasalahan dalam sebuah perkotaan untuk membangun IPAL. Oleh karena itu, MCK Terpadu Tlogomas tercipta untuk mengatasi permasalahan tersebut. Dengan memanfaatkan beton porous berbahan dasar recycle agregat berukuran 0,5-2 cm sebagai media filtrasi, penelitian ini bertujuan untuk mencari efisiensi beton dalam memperbaiki kualitas mutu air limbah domestik ditinjau dari pH, amoniak, minyak dan lemak serta total coliform. Model reaktor memiliki dimensi 100×41×40 cm3 dan sekat 4 lapis beton setebal 5 cm dengan debit 2 lt/menit. Model reaktor ini dijalankan secara menerus dari jam 07.00-17.00 selama 10 hari. Sedangkan sampel diambil pada hari ke-1 dan ke-10. Efisiensi parameter Amonia sebesar 20,54% dengan keadaan amonia tidak memenuhi baku mutu air limbah. Kemudian untuk parameter minyak & lemak tidak efisien namun kadar minyak & lemak memenuhi baku mutu air limbah. Dan untuk parameter total coliform terefisiensi sebesar 30,77 dan memenuhi kadar baku mutu air limbah
Co-Authors -, Rizka Anindya Nurus Shobah Aditya Wibowo Adityastama, Risang Afan Allail Rofikha Alamsyah, Muh Arsyil Alfiko Rail Prameswara Andawayanti, Ussy Andre Primantyo Hermawan Arissaputra, Andry Sofyan Aritonang, Samuel Yosema Ariza Julian Hakim Arrosyad, Muhammad Arya Pradamansyah Putra Ashari, Syaiyidati Fitri Nur Khoiriah Assajjad, Nurrohman Adi Aulia, Nanda Daffa Muhammad Faeyza Delivean Rakha Dermawan Denny Ahmad Fauzi Devi, Agung Ayu Gayatri Dharyatiputri, Jihan Faradillah Dian Sisinggih Donny Harisuseno Effendi, Muhammad Daffa Eka Juli Dwi Mulyawati Elang Timur M. Patih Ragananda Eliana Renate Simanungkalit Emma Yuliani Ery Suhartanto Eva Arifi Eva Resmani Fakhruddin, Daffa Budi Fakhrulloh, Ahzar Febrianto, Ridwan Febriyanti Maulina Fikhoir, Yalim Firdaus, Adam Wahyu Fitriyasari, Ammy Geraldine, Monica Odelya Ghaliufar, Fathan Gunawan, Alif Ramadhani Medisia Putri Guntoro, Dani Eko Guntoro, Dani Eko Hartanto, Tomy Dwi Heri Suprijanto Hidayat, Muhammad Nurjati Hidayatulloh, Ahmad Yusuf Irenne Ismayanti Romadona Jadfan Sidqi Fidari Kiki Windi Safitri Kistanti, Ida Fitri Komala Candra, Yoggi Fracasnofa Kurniawan, Dita Cahya Linda Prasetyorini Listyana, Kurnia Ulfi Lu'luil Maknun Lufti Akbar M. Janu Ismoyo M. Latiefudin Taruna Pratama Manalu, Marchell Geovande Marsudi, Suwanto Megantoro, Chrisnada Virgiawan Misbachussudur, Mochamad Mochammad Roviq Moh. Sholichin Mohammad Bisri Muchammad Zidan Muhammad Azhar Thirafi Say Muhammad Fahmi Fawji Muhammad iqbal Muhammad, Aminulloh Muhammad, Dien Azmi Nur Sholawatini Nuretha Hevy Purwaningtyas Nurjati Hidayat, Muhammad Nurwijayanti Pangestika, Erina Riski Pitojo Tri Juwono Pitojo Tri Juwono Pramudya, Rafi Rizky Pratama, Ivan Kurnia Putra, Boy Adi Putu Hadi Setyarini Qodriah Dianasari qoidulhaq, fayyadh Rachmat, Alvian Rahman, Muhammad Adhia Rahmi, Nuri Aisyah Raya Abdullah Resmani, Eva Reza Indra Ridayani, Aline Tabina Rispiningati, Rispiningati Riyanto Haribowo Riyanto Haribowo Rosamike, Mega Okvita Karinda Runi Asmaranto Sholawatini, Nur Sholichin, Moh. Silvia Dyah Pitaloka Sisca Fajriani Sovereign, Sefaca Markchel Sri Wahyuni Sri Wahyuni Sulthon Arsyad Aifudin Sumiadi Sumiadi, Sumiadi Suwanto Marsudi Suwanto Marsudi Suwanto Marsudi Syafiq, Gilang Ussy Andawayanti Ussy Andawayanti Very Dermawan Very Dermawan Very Dermawan Wardana, Yoga Okta Wicaksana, Chandra Yoga Wicaksono, Dadang Teguh Wijayanto, Achsin Yusron, Vidia Fitri Amalia Zakariya, Ahmad Fatah