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PERENCANAAN BENDUNG MENENG DI SUNGAI DOLOK KABUPATEN DEMAK Al Fattah, Zihad; Ikhwanudin, Ikhwanudin; Husodo, Ibnu Toto
Jurnal Teknik Sipil Giratory Upgris Vol 1, No 2: Desember 2020
Publisher : Universitas PGRI Semarang

Sungai merupakan bagian penting dalam setiap aspek. Sungai dimanfaatkan untuk irigasi, pembangkit listrik tenaga air, air baku dan perikanan. Di Indonesia sungai sering digunakan untuk pengairan sawah, oleh karena itu Indonesia memiliki sektor pertanian yang baik. Salah satu sungai yang digunakan untuk irigasi adalah sungai Dolok di kabupaten Demak, akan tetapi ketika musim kemarau kebutuhan air untuk sawah tidak mencukupi. Untuk mencukupi daerah irigasi Dolok, dibutuhkan konstruksi bendung menaikkan muka air sungai sehingga dapat memenuh kebutuhan air untuk sawah di daerah irigasi Dolok. Pada perencanaan bendung ini pembahasan meliputi analisis hidrologi, analisis hidrolika dan analisis stabilitas bendung. Analisis hidrologi meliputi curah hujan rencana dan debit sungai rencana (Q50). Analisis hidrolika meliputi perencanaan konstruksi utama bendung, perencanaan kolam olak, perencanaan rip â€“ rap dan perencanaan pintu pengambilan. Analisis stabilitas bendung harus aman meliputi aspek stabilitas terhadap geser, stabilitas terhadap guling, stabilitas terhadap eksentrisitas dan stabilitas terhadap daya dukung tanah. Perhitungan debit banjir menggunakan metode hesper dengan periode ulang 50 tahun didapatkan hasil Q50 = 96,843 m3/dtk. Perencanaan Bendung Meneng menggunakan bendung tetap tipe ogee nomor 4 dengan lebar efektif bendung 12,97 meter, kolam olak tipe bak tenggelam dengan jari â€“ jari 2,67 meter.Kata Kunci: Hidrolika, Hidrologi, Stabilitas Bendung.

ANALISIS KEBUTUHAN DAN KETERSEDIAAN AIR BERSIH DI KECAMATAN KLEGO KABUPATEN BOYOLALI Leksana, Rudi; Rizani, Mohammad Debby; Ikhwanudin, ikhwanudin; Aksin, Nur
Jurnal Teknik Sipil Giratory UPGRIS Vol 5, No 2: Desember 2024
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v5i2.21963

Clean water is one of important needs for human in their daily life. According to Central Statistic Department of Boyolali in 2018 TO 2021, the population of society in Klego District increased in 2022. It caused the clean water needs also increased. The services of infrastructure and clean water availability was not maximal yet causes the society must to look for the alternative sources of clean water to fulfill their clean water needs. The purposes of this research are to know the water needs and water ability and to know the reservoir capacity to be accomodate of the clean water. This research contains aboot the water needs and availability in Klego, Boyolali District. The researcher start the research by secondary data collection such as population data, the customer data, source capacity data and clean water production discharge data. In the calculation of society population, the researcher used population data in last 5 years with calculation prediction until 2032. To calculate the data, the researchers used Geometry method, Arithmetic method, and Linier Regression method. Then from the calculation, the researcher choose Arithmethic method because it have the smaller values. According to the calculation of the data by using Arithmetic method, so it is obtained the number of clean water needs, there is 66,69 liter/second in 2032 from the calculation of society population data, beside that, the clean water needs, there is 0,67 liter/second in 2032 from PDAMâ€™s customer calculation. The clean water availability, there are 10 liter/second for source capacity and 1,9 liter/second for the production discharge in 2031. Then, the reservoir capacity is 15, 482 m3.

PERENCANAAN INSTALASI PENGOLAHAN AIR LIMBAH PADA INDUSTRI TAHU (Studi Kasus Pabrik Tahu WD Lamper Lor Semarang Selatan) Rizani, Mohammad Debby; Ikhwanudin, Ikhwanudin; Iffah, Khilya Milkhatul; Prayogi, Gilar Maynalda
Jurnal Teknik Sipil Giratory UPGRIS Vol 4, No 1: Juni 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v4i1.18028

In the production process, the tofu industry produces solid and liquid waste. The waste contains organic matter with high levels of BOD, COD, and TSS and does not meet quality standards. If the waste is directly discharged into the environment, it will reduce the carrying capacity of the environment. This research was conducted at the WD Lamper Lor Tofu Factory, with the aim of planning the design and RAB for the construction of the wastewater treatment plant at the Tofu Factory. This research uses quantitative analysis methods which are presented in the form of numbers which are then explained and interpreted in the form of descriptions. The quality of BOD, COD, TSS, and pH were 144 mg/L, respectively; 380 mg/L; 98 mg/L; and 4.34. Based on the quality standards, the wastewater does not meet the requirements, so it is necessary to plan a wastewater treatment plant. Researchers plan the processing stages, namely Reservoir, Equalization, Anaerobic Digester, Gas Storage, Presettlement Tub, Anaerobic Biofilter, and Final Sedimentation Tub. The estimated effluent from the processing of BOD, COD, and TSS is 2,916 mg/L, respectively; 7.695 mg/L; 2.116 mg/L. In addition to processing it into water that is fit for reuse, the design of this wastewater treatment plant produces methane gas that can be used for the tofu-making process or can be used on a household scale. The total budget plan for the planning of the Wastewater Treatment Plant at the WD Tofu Factory is 31,106,117.05.

PERENCANAAN INSTALASI PENGOLAHAN AIR LIMBAH (IPAL) PABRIK TEMPE DENGAN DIGESTER ANAEROBIK DAN BIOFILTER ANAEROBIK DI WILAYAH SEMARANG (Studi Kasus Pabrik Tempe Dampyak Gunung Pati Kota Semarang) Rizani, Mohammad Debby; Ikhwanudin, Ikhwanudin; Lestiyanto, Yoga; Anggraeni, Yossi Dewi
Jurnal Teknik Sipil Giratory UPGRIS Vol 4, No 2: Desember 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v4i2.18130

The tempe industry is a food industry that has the potential to pollute the environment from the liquid waste it produces. Liquid waste from the tempe processing process if it is immediately disposed of without going through the management process first will have an impact on environmental pollution. In Semarang City, precisely in Gunung Pati District, there is a medium-scale tempe processing factory. So far, the tempe factory's liquid waste is directly disposed of into a ditch behind the factory without processing the liquid waste first.This research is a quantitative research presented in the form of numbers and then explained in the form of descriptions. From the results of the wastewater quality test, the pollutant parameters BOD = 369 mg/L; COD = 28,000 mg/L; TSS = 0.991 mg/L; and pH = 4,3. According to the Regional Regulation of the Province of Central Java Number 5 of 2012 concerning Amendments to the Regional Regulation of the Province of Central Java Number 10 of 2004 this value still does not meet the requirements. The wastewater treatment plant that the researchers are planning is in the form of a holding tank; Equalization Tub; Anaerobic Digesters; Gas Holder; Initial Settling Tub; Anaerobic Biofilter using bioball filter media and steel nets as a barrier for bioballs where bacteria are grown; and Final Settling Tank. With an estimated effluent from the processing of BOD, COD, and TSS of 7.47225 mg/L; 189mg/L; and 0.00669 mg/L which means it meets the quality standard. From the planning results, it was obtained that the total budget plan for planning the tempe factory wastewater treatment plant was Rp. 111.280.021,49.

PENANGANAN BANJIR DAERAH ALIRAN SUNGAI BABON KOTA SEMARANG Ikhwanudin, ikhwanudin; Yudaningrum, Farida; Wardani, Agustina
Jurnal Teknik Sipil Giratory UPGRIS Vol 5, No 1: Juni 2024
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v1i1.19456

Floods are natural disasters that we often encounter during the rainy season. Apart from there are also tidal floods which are caused by global warming, this problem occurs in the city of Semarang, especially North Semarang, specifically the north coast of the Java Sea. Floods that occurred in 2021 in the city of Semarang include Starting from Genuk, Kaligawe, Satsiun Tawang, Tanjungmas, Karangayu, the flood disaster was caused by high rainfall, while tidal floods caused high tides and inundated roads and houses of residents on the north coast of Semarang city. To handle this problem, the government Currently we have made embankments, namely making embankments including the Sringin River which is equipped with a ponpa, Tenggang River, Babon River, Semarang River, Banger River, and others. These embankments are equipped with pumps so that when the water from upstream to downstream is high, the water is pumped. to the sea, the aim is to find out one of the annual discharges of the river, namely the Babon, and to find out the tamping capacity of the Babon River Longstorage. Apart from that, there is a method for handling tidal floods, namely using the Babon River Longstorage which is equipped with a pump, if there is high tide which inundates roads and houses. residents then the pump is turned on, whereas if the water recedes and does not inundate residential areas then the pump is turned off. Flood control analysis is calculated using the HEC-RAS program simulation using a return period of 50 years. Based on calculations using the HEC-HMS program. The flood discharge is 2,529 m3/sec. The high tide elevation is + 1.67 m, while the normal water level is -0.5 m.

PERENCANAAN INSTALASI PENGOLAHAN AIR LIMBAH PADA INDUSTRI TAHU (Studi Kasus Pabrik Tahu WD Lamper Lor Semarang Selatan) Rizani, Mohammad Debby; Ikhwanudin, Ikhwanudin; Iffah, Khilya Milkhatul; Prayogi, Gilar Maynalda
Jurnal Teknik Sipil Giratory UPGRIS Vol 4, No 1: Juni 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v4i1.16193

In the production process, the tofu industry produces solid and liquid waste. The waste contains organic matter with high levels of BOD, COD, and TSS and does not meet quality standards. If the waste is directly discharged into the environment, it will reduce the carrying capacity of the environment. This research was conducted at the WD Lamper Lor Tofu Factory, with the aim of planning the design and RAB for the construction of the wastewater treatment plant at the Tofu Factory. This research uses quantitative analysis methods which are presented in the form of numbers which are then explained and interpreted in the form of descriptions. The quality of BOD, COD, TSS, and pH were 144 mg/L, respectively; 380 mg/L; 98 mg/L; and 4.34. Based on the quality standards, the wastewater does not meet the requirements, so it is necessary to plan a wastewater treatment plant. Researchers plan the processing stages, namely Reservoir, Equalization, Anaerobic Digester, Gas Storage, Presettlement Tub, Anaerobic Biofilter, and Final Sedimentation Tub. The estimated effluent from the processing of BOD, COD, and TSS is 2,916 mg/L, respectively; 7.695 mg/L; 2.116 mg/L. In addition to processing it into water that is fit for reuse, the design of this wastewater treatment plant produces methane gas that can be used for the tofu-making process or can be used on a household scale. The total budget plan for the planning of the Wastewater Treatment Plant at the WD Tofu Factory is 31,106,117.05.

ANALISIS KESEIMBANGAN AIR DAERAH IRIGASI DOLOK BENDUNG BARANG KAB. DEMAK Yudaningrum, Farida; Ikhwanudin, Ikhwanudin; Kusmiawati, Siti; Solikhah, Sena Zaimatus
Jurnal Teknik Sipil Giratory UPGRIS Vol 4, No 1: Juni 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v4i1.16189

Indonesia as an agricultural country is very interested in the availability of water to support the agricultural sector. One of the efforts to maximize agricultural production results is the utilization of water resources through proper and efficient management of water allocation. D.I Dolok has a large enough land area and of course requires quite a lot of water, so it is necessary to analyze the needs and availability regarding the control of irrigation water for optimal agricultural land. The purpose of this study is to determine the availability of water and the need for irrigation water in D.I Dolok. In this study using Dr. method. FJ. Mock, after we have calculated the data we got from the results of the field survey, the results obtained for the total discharge that can enter the Barang Weir is 51.058 m3/s, and for the amount of water availability in Barang Weir it increases in the rainy season and decreases in the dry season with the largest discharge occurred in January, namely 4,800 m3/sec and the smallest discharge occurred in August, namely 0,160 m3/sec. As for the irrigation water needs of the Barangay Dam, it was obtained 32,967 mÂ³/s with an area of 1296 Ha. Then for the calculation of the water balance by comparing the value of the mainstay discharge with the need for irrigation water with the selected cropping pattern, it can be concluded that the need for irrigation water can be fulfilled from the available mainstay discharge.

PERENCANAAN INSTALASI PENGOLAHAN AIR LIMBAH KOMUNAL DI DESA KECEPIT KECAMATAN PUNGGELAN KABUPATEN BANJARNEGARA Fauzi, Genta Rizal; Ikhwanudin, Ikhwanudin; Ariawan, Donny
Jurnal Teknik Sipil Giratory UPGRIS Vol 3, No 1: Juni 2022
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v3i1.12835

Pemukiman penduduk mempunyai masalah utama yaitu pencemaran lingkungan yang ditimbulkan oleh pembuangan air limbah yang tidak tertangani dengan baik. Sumber penghasil limbah cair terbesar di negara ini adalah dari hasil aktivitas rumah tangga. Berdasarkan pengamatan di lapangan didapatkan bahwa grey water pada desa kecepit dibuang langsung ke drainase. Pengaliran air limbah ke saluran terbuka, seperti ke saluran drainase, tentu saja berpotensi menjadi sumber penyebaran penyakit akibat sanitasi yang buruk. Instalasi pengolahan air limbah yang digunakan untuk desa kecepit direncanakan menggunakan unit anaerobic filter (af) dan anaerobic baffled reactor (abr). Penentuan jumlah penduduk penerima manfaat direncanakan sebanyak 285 jiwa didapat berdasarkan proyeksi penduduk tahun 2040 dengan debit air limbah sebanyak 25,65mÂ³/hari. Anaerobic filter (af) yang direncanakan memiliki 5 kompartemen dengan debit air limbah untuk 1 kompartemen sebesar 3,2016 mÂ³/hari. Dimensi panjang, lebar dan kedalaman 1 kompartemen af yakni 0,51 meter, 2,5 meter dan 2,5 meter. Sedangkan unit anaerobic baffled reactor (abr) direncanakan memiliki 2 kompartemen dengan dimensi panjang 1,58 meter, lebar 2,7 meter dan kedalaman 2,5 meter.Kata kunci: filter anaerobic, anaerobic baffled reactor, air limbah domestik

PENANGGULANGAN BANJIR BANJIR SISI AIRSIDE BANDAR UDARA INTERNASIONAL JENDERAL AHMAD YANI SEMARANG Janah, Miftakhul; Jauhari, Muhammad Tantowi; Ikhwanudin, Ikhwanudin; Rizani, Mohammad Debby
Jurnal Teknik Sipil Giratory UPGRIS Vol 3, No 2: Desember 2022
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v3i2.14522

AbstractSemarang is one of the cities that often occurs flood disaster due to very high rainy weather. This resulted in the Ahmad Yani airport runway being inundated with water as high as approximately 50 cm around the airside which could disrupt flight operations. Therefore it is necessary to have a flood prevention activity to minimize the situation. The purpose of this study is to determine the factors resulting from flooding on the airside of Ahmad Yani airport and to determine the design of short-term and long-term drainage systems. In calculating the planned flood discharge (R24) using data such as rainfall, channel measurement data, and the condition of the channel. Based on this data, the researcher will calculate the planned rainfall for the Q2, Q5, Q10, Q25, Q50, and Q100 years. To calculate the data, we use the Normal Distribution, Log Normal Distribution, Pearson III Log Distribution, and Gumbel Distribution. Then from these calculations the Gumbel distribution method was chosen because it is closer. Based on data processing using the Rational method, the peak flood discharge value (QP) is obtained when Q2 all channels are able to accommodate the planned flood discharge, Q5 there is 1 channel unable to accommodate, namely in DU1-P2, Q10 there is 1 channel unable to accommodate, namely in DU1- P2, Q25 there are 1 channel that is not able to accommodate, namely in DU1-P2, Q50 there are 2 channels that are unable to accommodate, namely in DU1-P2 and S1B-P7, Q100 there are 2 channels that cannot accommodate, namely in DU1-P2 and S1B-P7. For the short-term drainage system design for flood management, it includes: repairing damaged channels, improving the foundation of the west side BRC fence, repairing pump station access roads, improving airside embankments, and pumping operations. In the design of the long-term flood control drainage system, the dimensions of the drainage channel on the airside side are added because there are 2 (two) channels that are not able to accommodate the planned discharge at the 50-year return period (Q50) with the addition of dimensions in the channel DU1-P2 b = 3, 5 h = 0.5 and S1B-P7 b = 2.7 h = 0.9.Keywords: Flood, Ej Gumbel, prevention.

PERENCANAAN EMBUNG KRAJAN KABUPATEN GROBOGAN Darmawan, Muhammad Ajie; Sumerman, Sumerman; Hermanto, Wilarso; Ikhwanudin, Ikhwanudin
Jurnal Teknik Sipil Giratory UPGRIS Vol 1, No 2: Desember 2020
Publisher : Universitas PGRI Semarang

Semua makhluk hidup sangat memerlukan air dalam perkembangan dan pertumbuhannya. Jika tidak ada usaha pengendalian air pada musim hujan, maka akan meyebabkan kekeringan dan kesulitan mendapatkan sumber air baku. Untuk itu diperlukan suatu manajemen yang baik terhadap pengembangan dan pengelolaan sumber daya air agar potensi bencana yang disebabktkan oleh air tersebut dapat dicegah. Tujuan dalam penelitian ini adalah untuk menghitung debit banjir rencana pada Embung Krajan, menghitung persediaan air baku di Desa Jetaksari, Kecamatan Pulokulon, Kabupaten Grobogan, serta menghitung berapa faktor keamanan untuk stabilitas konstruksi embung.Lokasi perencanaan embung ini terletak di Desa Jetaksari, Kecamatan Pulokulon, Kabupaten Grobogan. Secara geografis terletak di antara 110Âº15â€™ BT - 111Âº25â€™ BT dan 7Âº LS - 7Âº30â€™ LS. Penelitian ini menggunakan data primer dan data sekunder. Data primer dikumpulkan melalui metode observasi dan metode wawancara. Sedangkan data sekunder terdiri dari data topografi, data geologi, data tanah, data hidrologi dan data penduduk. Tahapan dalam perencanaan Embung Krajan dimulai dari survey dan investigasi pendahuluan, identifikasi masalah, studi pustaka, pengumpulan data, analisis data, perencanaan konstruksi embung, stabilitas konstruksi embung dan gambar konstruksi.Hasil analisis debit banjir rencana DAS Embung Krajan, debit banjir maksimum yang memiliki kondisi yang paling kritis adalah metode Nakayasu, nilai yang di dapat Q2 Tahun = 37,51mÂ³/det, Q5 Tahun = 49,51mÂ³/det, Q10 Tahun = 58,93mÂ³/det. Sedangkan penduduk yang terpenuhi untuk kebutuhan air baku sejumlah 770 orang. Dan untuk faktor keamanan stabilitas konstruksi embung diperoleh embung keadaan kosong 3,18 N.m tanpa gempa dan 2,30 N.m dengan gempa. Embung keadaan penuh 5,34 N.m tanpa gempa dan 2,89 N.m dengan gempa.Berdasarkan hasil penelitian ini dapat disimpulkan bahwa dari perhitungan menggunakan 3 metode diambil debit banjir yang paling besar dan yang menghasilkan debit banjir yang lebih kritis adalah metode Nakayasu. Embung Krajan ini hanya mampu menyediakan air baku untuk penduduk di Desa Jetaksari khususnya di Dusun Krajan.

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