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Mawiti Infantri Yekti
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering Transportation

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Mitigasi Non Revenue Water (NRW) Sistem Jaringan Distribusi pada District Meter Area (DMA) Zona Kota Blahbatuh PDAM Gianyar Yekti, Mawiti Infantri; Gede Pebriarta Pratama, Ida Bagus; Ngurah Purbawijaya, Ida Bagus
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 2, DESEMBER 2019
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.945 KB) | DOI: 10.14710/mkts.v25i2.23619

Abstract

The most common problem with drinking water supply is Non Revenue Water (NRW). NRW can be grouped into two types, namely physical water loss and non-physical water loss. This study aims to determine the NRW size, NRW causes, counter measures that can be done to suppress NRW. The results of evaluation of distribution networks that occur in the Blahbatuh City Zone District Meter Area (DMA) PDAM Gianyar. The difference between the amount of water distributed and the amount of water recorded in the account is NRW. The way to find out the cause and control of NRW is to analyze the results of the step test, UFM test (Ultrasonic Flow Meter), and conduct the interviews with employees of PDAM. The evaluation of distribution networks is only done in DMA Pande that has completed data. The amount of NRW that occured in the Blahbatuh City Zone is 474,142.83 m3/year (59.91%). The water loss is caused by damage to pipe accessories, leaky pipes, inaccuracies in the accuracy of the water meter. The water loss can be overcame by establishing a DMA, replacing pipe accessories, calibrating and replacing water meters. The evaluation results for the existing conditions of the distribution network in DMA Pande of Blahbatuh City Zone have not worked optimally. It seen from the results of the waternet and from the number of SR’s that have not met the requirements for the formation of a DMA.
ANALISIS PERUBAHAN PENGGUNAAN AIR BERSIH SEBELUM DAN SESUDAH TERJADI KENAIKAN TARIF PDAM DI KABUPATEN BANGLI Yekti, Mawiti Infantri; Kerta Arsana, I Gusti Ngurah; Aryasavira, Made Dwita Berlian
Jurnal Teknik Pengairan Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

In 2013 the Bangli Regency Government and the Bangli Regency PDAM agreed to make a new policy related to the increasing of clean water tariffs in the Bangli and Tembuku Districts. This study aims to bring up the trend of changes before and after the PDAM tariff increase of 118%, so that it can be used as a basis for further Bangli PDAM decision making. This study uses a simple random sampling method by randomly taking the samples studied without looking at the strata, and samples are scattered as many as 80 samples in Bangli District and as many as 75 samples in Tembuku District. The analysis showed that the use of clean water experienced a declining trend after the tariff increase of 25.28% based on the survey and 25.31% based on the provision of the PDAM in the Bangli District. Whereas in Tembuku District the reverse trend showed an increase after the tariff increase of 14.08% based on the survey and 14.07% based on the provision of the PDAM. Changes in the use of clean water on average per person / day is influenced by water needs based on the number of family members in each house per month.
PERENCANAAN JARINGAN IRIGASI AIR TANAH DESA PENYARINGAN KECAMATAN MENDOYO KABUPATEN JEMBRANA I Made Bayu Purnama; I Nyoman Norken; Mawiti Infantri Yekti
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 22, No. 1, Januari 2018
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (934.345 KB) | DOI: 10.24843/JITS.2018.v22.i01.p06

Abstract

Jaringan irigasi air tanah adalah usaha pengambilan air dari bawah permukaan tanah (mengangkat/memindahkan air dari tempat yang lebih rendah ke tempat yg lebih tinggi) dengan bantuan pompa air, sehingga dapat mendistribusikan air untuk keperluan irigasi. Tujuan irigasi secara langsung adalah membasahi tanah agar dicapai suatu kondisi tanah yang baik untuk pertumbuhan tanaman. Perencanaan jaringan air tanah ini dimulai dengan merencanakan luasan daerah yang diairi berdasarkan pola tata tanam, menganalisis curah hujan efektif, menghitung debit aliran setiap blok lahan yang dialiri, menghitung dimensi reservoir agar ukuranya dapat menampung air dengan efisien, dan yang terakhir adalah menghitung dimensi setiap pipa yang mengalir dari sumur ke reservoir, dan dari reservoir ke setiap blok lahan yang telah direncanakan. Hasil perencanaan yang diperoleh adalah sebuah lahan perkebunan palawija dengan luas 26,15 ha yang dibagi menjadi 37 blok dan 37 titik outlet. Debit yang yang diperlukan oleh seluruh lahan palawija adalah sebesar 106,18 m3, dimensi reservoir dengan panjang 10 meter x lebar 10 meter x tinggi 1 meter. Dalam pendistribusian dari sumur air tanah ke reservoir menggunakan pipa PVC 3 inci dengan panjang pipa 323,38 meter, sedangkan pendistribusian air dari reservoir menuju lahan dengan panjang pipa keseluruhan adalah 2201,63 meter menggunakan ukuran pipa yang bervariasi sesuai kebutuhan dan efisiensi dari pemipaan. Kata kunci: jaringan irigasi, air tanah, palawija
ANALISIS KAPASITAS SALURAN DRAINASE DAN PENANGANAN BANJIR DI JALAN BUMI AYU DESA SANUR KECAMATAN DENPASAR SELATAN I Made sutrisna Ari Kesuma; Mawiti Infantri Yekti; Ida Bagus Purbawijaya
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 24, No. 2, Juli 2020
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2020.v24.i02.p07

Abstract

Flooding is a condition where excess capacity of water cannot be accommodated. It makes the water overflow to the right and left sides of the embankment of the drainage channel that causes adverse inundation. Flood phenomenon is absolutely inseparable from0the contribution0of the physical0condition0of an area from the0topography of an area where the land is gentler than0the0surrounding land. These problems occur in the drainage channel located on Jalan Bumi Ayu Denpasar. This study was aimed to deal with flooding by evaluating the capacity of the existing channel and increasing the channel on Jalan Bumi Ayu Denpasar. The analysis of drainage channel capacity in calculating rainwater discharge by observing flow patterns and channel dimension planning based on surveys that have been conducted. The annual maximum daily rainfall data was obtained from the Regional Office of the Meteorology and Geophysics Agency in Region III Denpasar. The rainfall stations reviewed were Sanglah Station and Sumerta Station. It starts with analyzing the annual maximum daily rainfall data so that the Intensity Duration Frequency (IDF) curve was obtained. Calculation of time concentration is calculated using the Kirpich formula, then the theoretical plan flood discharge was carried out by the Rational Method, namely Qt = 0.278.C.I.A and channel capacity was calculated by the formula Qsal = A.V. If the calculation results show Qsal> Qt, then the area is safe from inundation / flood problems. From the results of the analysis, the tertiary drainage could not accommodate theoretical discharge for the return period of 2 and 5 years, on the secondary channel it was unable to0accommodate0theoretical discharge0for the return0period of 5 and 10 years. So it is necessary to increase0the channel capacity0dimensions from SBA 1 to SP 4 (B: 0,75 - 1; H: 0,9 - 1,7) m.
ANALISIS PENGEMBANGAN SUMBER DAYA AIR DAS TUKAD SABA DENGAN DIBANGUNNYA WADUK TITAB DI KABUPATEN BULELENG Siti Nur Indah Sari; Mawiti Infantri Yekti; I Nyoman Norken
JURNAL SPEKTRAN Vol 8 No 1 (2020): VOL. 8, NO. 1, JANUARI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Abstract

The Saba river basin has an area of ??69.54 km2 and the length of the drainage is 36 km. The river drainage area is a hilly area, so that rainwater flows quickly which then becomes a flood. The land condition in the inundation area generally consists of rice fields that depend on rain, there is no technical irrigation system so that the cropping pattern depends on the rain. So to overcome this problem a Titab Reservoir was built. The Titab Reservoir serves as the supply of irrigation water for DI Saba with an area of ??1,396.40 ha and Pulp of 398.42 ha, raw water as much as 0.35 m3/s and PLTA with 2 x 0.75 MW. Given the importance of the benefits of the Titab Reservoir, a study of the reservoir capacity of the Titab Reservoir was conducted. The analysis begins with calculating the reliability discharge from measured discharge data, obtained Q80 of 2.01 m3/dt. Furthermore, calculating irrigation needs, while water and hydropower needs are used from existing planning data. Then do the simulation using the RIBASIM program. The simulation results show scenario 2 produces a reliability level of 83.33%, scenario 3 produces a reliability level of 82.22%, and scenario 4 produces a reliability level of 58.54%. Scenario 2 is the optimum result. Furthermore, verification of the RIBASIM model is needed using observational discharge data at the Saba dam. The verification results show that the data accuracy is quite good with a correlation coefficient of 0.74 and determination of 0.55.
KOMPARASI MODEL HIDROGRAF SATUAN TERUKUR DENGAN HIDROGRAF SATUAN SINTETIS (STUDI KASUS DAS TUKAD PAKERISAN) Ayub Benny Kristianto; I Nyoman Norken; I Gusti Bagus Sila Dharma; Mawiti Infantri Yekti
JURNAL SPEKTRAN Vol 7 No 1 (2019): Vol. 7, No.1, Januari 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Abstract

COMPARATIVE MODEL OF MEASURED UNIT HYDROGRAPH WITH SYNTHETIC UNIT HYDROGRAPH (CASE STUDY OF TUKAD PAKERISAN WATERSHED) ABSTRACT Several methods and models of Synthetic Unit Hydrograph (SUH) have been developed to assist in the process of hydrological analysis within a Watershed. These methods include Snyder, Nakayasu, GAMA I, Limantara and ITB. The SUH methods are widely used by practitioners in calculating flood discharge, without knowing the deviations of these methods when compared to measured unit hydrographs in a watershed. This causes the SUH models give an overestimated or underestimated results to the measured unit hydrograph. Therefore, comparative SUH models are needed to determine the deviation of each model, and if necessary adjust the coefficient of the SUH model so that the SUH model approached the measured unit hydrograph in a watershed. Comparative studies of several SUH and measured unit hydrograph were performed on the Tukad Pakerisan watershed in Gianyar Regency-Bali. The measurable unit hydrograph comparisons on the watershed with the SUH Snyder, Nakayasu, GAMA I, Limantara, ITB-1 and ITB-2 models have significantly deviated results. This deviation is shown in three unit hydrograph parameters which include peak discharge (Qp), peak time (Tp), and base time (Tb). The SUH Snyder model with adjustment coefficient Ct = 0.800 and Cp = 1.052 very close to measured unit hydrograph of Tukad Pekerisan watershed with deviation less than 5%.
EVALUASI KINERJA SISTEM IRIGASI BERDASARKAN PERMEN PUPR NO.12/PRT/M/2015 (STUDI KASUS: DAERAH IRIGASI TUKAD AYUNG, MAMBAL, KABUPATEN BADUNG) Mawiti Infantri Yekti; Anak Agung Diah Parami Dewi; I Nyoman Suparyana
JURNAL SPEKTRAN Vol 8 No 2 (2020): VOL. 8 NO. 2, JULI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Abstract

ABSTRAK Evaluasi kinerja sistem irigasi sangat diperlukan untuk mengetahui nilai komponen seluruh pendukung sistem irigasi yang selanjutnya digunakan sebagai referensi perbaikan. Evaluasi kinerja sistem irigasi mengacu pada Permen PUPR No.12/PRT/M/2015 Tanggal 6 April 2015 tentang Eksploitasi dan Pemeliharaan Jaringan Irigasi yang dikombinasi dengan sistem jaringan irigasi subak. Terdapat permasalahan di Daerah Irigasi Tukad Ayung Mambal yang memiliki luas baku 5.963 ha dengan luas lahan produktif sekitar 2.608 ha yang berkisar 44% dari luas baku. Penelitian ini bertujuan untuk menganalisis kinerja sistem irigasi utama dan tersier dan mengetahui strategi penanganan dalam upaya meningkatan kinerja sistem irigasnya. Untuk menganalisis permasalahan tersebut, dalam penelitian ini menggunakan metode deskriptif kualitatif, dengan mengumpulkan data primer menggunakan formulir wawancara terstruktur berdasarkan penilaian kinerja sistem irigasi. Formulir ini telah dilampirkan dalam peraturan tersebut. Pemilihan sampel menggunakan metode purposive sampling untuk mengevaluasi kinerja sistem irigasi, pada sistem irigasi utama 45 responden, dan 43 responden pada sistem irigasi tersier. Wawancara juga dilakukan kepada pejabat terkait pada Dinas PUPR Provinsi Bali. Hasil analisis kinerja sistem irigasi memiliki nilai 78% untuk sistem irigasi utama, dan 71% untuk sistem irigasi tersier. Hasil ini sesuai dengan standar Permen tersebut yang memiliki kisaran nilai 70-79 dengan kategori kinerja baik. Hal ini sudah sesuai dengan hasil wawancara bahwa telah dilakukan pemeliharaan rutin dan pemeliharaan secara berkala pada DI Tukad Ayung Mambal.
ANALISIS HIDROLIKA PENAMPANG ALAMI DI SUNGAI UNDA HILIR Putu Gita Widiarsini; Gustave Suryantara Pariartha; Mawiti Infantri Yekti
JURNAL SPEKTRAN Vol 9 No 1 (2021)
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRAN.2021.v09.i01.p10

Abstract

Aliran Sungai Unda mengalir dalam Daerah Aliran Sungai (DAS) Unda dan melalui Kabupaten Klungkung dengan panjang sungai 22,6 km dan luas 230,9 km2 dengan tipe sungai adalah perennial. Pada saat terjadi banjir lahar dingin akibat erupsi Gunung Agung, sempadan sungai dengan tanggul alami di Sungai Unda hilir mengalami kerusakan akibat derasnya arus sungai yang mengalir dari hulu menuju hilir. Selain itu di hilir Sungai Unda ada bekas galian C dari letusan Gunung Agung sebelumnya. Akibat letusan Gunung Agung 2017 menyebabkan perubahan geometri hidrolis penampang sungai, termasuk tanggul alami dan lokasi galian C tersebut. Berdasarkan kondisi ini perlu dilakukan analisis penampang geometri Sunga Unda hilir menggunakan software HEC-HMS dan HEC-RAS. Hasil running awal berdasarkan debit banjir kala ulang 50 tahun sebesar 350,3 m3/detik menyebabkan luapan air pada penampang alami di hilir sungai yaitu antara UD 3 sampai dengan UD 11 setinggi 1,5 meter sampai dengan 3,0 meter sepanjang 1052,34 meter ke arah hilir. Posisi ini berada di hilir jembatan By Pass Ida Bagus Mantra. Running HEC-RAS dilanjutkan dengan merencanakan tinggi tanggul antara 2,0 meter sampai dengan 2,5 meter pada posisi UD 3 sampai dengan UD 11. Hasil running menyatakan sudah tidak terjadi luapan pada desain tanggul antara 2,0 meter sampai dengan 2,5 meter.
EVALUASI SISTEM PENYEDIAAN AIR BERSIH MENGGUNAKAN SOFTWARE WATERCAD DI DESA BATUNGSEL KECAMATAN PUPUAN KABUPATEN TABANAN Mawiti Infantri Yekti; Kadek Diana Harmayani; I Nyoman Dharma Krisnahadi
JURNAL SPEKTRAN Vol 8 No 1 (2020): VOL. 8, NO. 1, JANUARI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.932 KB)

Abstract

Batungsel Village utilizes clean water sourced from Sumber Tumpang Telu with existing water discharge from 2 (two) adjacent springs as much as 5,348 liters / second and 7,109 liters / second. At present, almost 20% of the community has not been served with clean water, and the existing distribution pipeline system has been able to meet 2 (two) existing banjars, namely the Batungsel Kelod and the Batungsel Kaja banjar. The results of the analysis of population growth projections show the arithmetic method which has the smallest standard deviation value. The average clean water needs for Batungsel village until 2033 are Banjar Batungsel Kelod at 1.75 liters / second, Banjar Batungsel Kaja at 2.71 liters / second, Banjar Dinas Pempatan at 0.01 liters / second and clean water needs at the development phase of the Dinas Pempatan banjar is 1.20 liters / second. The simulation results of the WaterCAD V8i program provide simulation results with pipes that do not meet the speed requirements, so that at the development stage a pipe diameter change is made according to the planning criteria and the development stage in the Pangkalan Service Office with the WaterCAD V8i program has met the planning standards. The development phase is planned to use PVC pipe class S-10 which is able to withstand a maximum pressure of 12.5 atm with fixed demand requirements or average water requirements of 0.11 liters / second.
Evaluasi Lokasi Titik Banjir di Sub Sistem III Kota Denpasar Berbasis Geographic Information System Mawiti Infantri Yekti; Ida Bagus Gede Indrayana; I Gusti Ngurah Kerta Arsana
Jurnal Rekayasa Sipil dan Lingkungan Vol 5 No 2 (2021): Jurnal Rekayasa Sipil dan Lingkungan
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jrsl.v5i2.23682

Abstract

The inability of the channel capacity to accommodate surface runoff can cause flooding. The Pangkung Lebak Muding channel, which is part of the Tukad Mati watershed, still experienced flooding from 2009 to 2019. Evaluation of flood points in the Pangkung Lebak Muding channel was carried out by comparing the capacity of the existing channel with the design discharge, then determining the capacity of the new channel. Initial channel mapping using Google Earth and GIS applications. The evaluation results are remapped to compare and display differences in flood points. The identification results show that there are 9 flood points for a 2 year return period and 10 points for a 5 to 10 year return period in secondary and tertiary canals. While in the primary channel there are 2 flood points for all return times. The solution to evaluating the capacity of this channel is dredging to a depth of 0.46 m for the secondary and tertiary channels and 1 m for the primary channel. The evaluation results show that all secondary and tertiary channels are not flooded in all return periods. ABSTRAK Ketidakmampuan kapasitas saluran untuk menampung limpasan permukaan dapat menyebabkan banjir. Saluran Pangkung Lebak Muding yang merupakan bagian DAS Tukad Mati, masih mengalami banjir dari tahun 2009 sampai 2019. Evaluasi titik-titik banjir pada saluran Pangkung Lebak Muding dilakukan dengan membandingan kapasitas saluran eksisting dengan debit desain, lalu menentukan kapasitas saluran baru. Pemetaan saluran awal menggunakan aplikasi Google Earth dan GIS. Hasil evaluasi dipetakan kembali untuk membandingkan dan menampilkan perbedaan titik banjir. Hasil identifikasi menunjukan terdapat 9 titik banjir untuk kala ulang 2 tahun dan 10 titik untuk kala ulang 5 sampai 10 tahun pada saluran sekunder dan tersier. Sedangkan pada saluran primer terdapat 2 titik banjir untuk semua kala ulang. Solusi dalam evaluasi kapasitas saluran ini dilakukan pengerukan sedalam 0,46 m untuk saluran sekunder dan tersier dan 1 m untuk saluran primer. Hasil evaluasi menunjukan semua saluran sekunder dan tersier tidak banjir pada seluruh kala ulang.
Co-Authors A. A. Diah Parami Dewi Adnyana, Made Mahat Budhi Anissa Maria Hidayati Annilda, Fitria Aryasavira, Made Dwita Berlian Ayub Benny Kristianto Cahyani, Kadek Desylia Corry Fanny Bethania Gede Fajar Eka Aditya Sujana Gede Pebriarta Pratama, Ida Bagus Haditama, I Gusti Ngurah Hesa Respati I Gusti Ngurah Kerta Arsana I Kadek Dika Arimbawa I Made Bayu Purnama I Made Kariyana I Made sutrisna Ari Kesuma I Nyoman Dharma Krisnahadi I Nyoman Norken I Nyoman Suparyana I Putu Gustave Suryantara Pariartha I PUTU GUSTAVE SURYANTARA PARIARTHA I Wayan Redana Ida Bagus Gede Indrayana Ida Bagus Ngurah Purbawijaya Kadek Budhi Warsana Kadek Diana Harmayani Kadek Diana Harmayani Kedaton, Kadek Hindhu Putra Kembarajaya, I Ketut Made Dwita Berlian Aryasavira Made Putri Irmayani Mecris Mides Yumame Putera, I Gusti Agung Adnyana Putu Doddy Heka Ardana Putu Gita Widiarsini Sagung Putri Chandra Astiti Selvi Marcellia Silvia G Tonyes Siti Nur Indah Sari Siti Nurul Khotimah Sudiartama, I Gede Agus Tjokorda Gde Raka Wijakesuma Tri Hayatining Pamungkas Warsana, Kadek Budhi Yujana, Cokorda Agung