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ANALISA TRANSPOR SEDIMEN DAN PENGARUHNYA TERHADAP PENGERUKAN KOLAM PELABUHAN BATUBARA DI KAWASAN SUKARAJA BANDAR LAMPUNG Yuda Romdania
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 16, No 3 (2012): Edisi Desember 2012
Publisher : UNIVERSITAS LAMPUNG

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In planning the construction and development of the Port, sedimentation or siltation problemsshould be minimized, especially in swimming harbor to secure and expedite the flow of shipping.Every time the sediment on the seabed will increase, in connection with the, to reduce siltationcaused by sedimentation is by dredging sediment pond Ports. Sediment defined as a collection ofparticle-organic and inorganic particles are irregularly shaped and accumulate extensively incoastal areas. based on Longshore Sediment Transport Table average rate of sediment obtained2176071.364 m3/yr/m. it means, within a period of 1 year, the extent of sediment by 2176071.364m2. And the time when the maximum height allowable sediment was 10.69 years. It means every10.69 years to do the dredging of the sediment on the sea floor, particularly in the harbor pool.

ANALISIS KASUS SEDIMENTASI DI TIGA TITIK KAWASAN WATER FRONT CITY Yuda Romdania
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 14, No 1 (2010): Edisi April Tahun 2010
Publisher : UNIVERSITAS LAMPUNG

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Prediction of sediment transport along the coast for various conditions is very important to knowin order to know the amount of sediment transport and examine the influences that tend toprovoke. Existence of the buildings on the coast will cause sedimentation in one hand and on theother side causing erosion. Bandar Lampung is city with a coastal region, is currently designing ajob that is Water Front City (beach city) which is designed in an effort to carry out vision andmission of Bandar Lampung City which is "Making the city of Bandar Lampung become civilized,comfortable and sustainable." The existence of this work it is necessary to design a sedimentationanalysis in order to know the amount of the resulting sediment transport and the influences whichtend to be caused due to designing Water Front City. Data collection is performed at three pointsthen inserted to CERC Equation which get a conclusion of sediment movement from two pointsconical at one point which is toward the Panjang Port, resulting a large pile of sediment aroundPanjang Port area.

IDENTIFICATION OF SPRING IN EAST LAMPUNG rudi hari perdana; Gatot Eko Susilo; Yuda Romdania
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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Water is the source for life. Earth is called the blue planet, as water covers three-quarters of Earth's surface. It's just that most of the sea water (salt water). Generally, the condition springs in Indonesia experienced a decline in the amount and debit, were damaged in the catchment area and the surrounding environment. To determine the existence of water resources, necessary to identify water resources. This research is to identify the sources of springs in knowing the status of water resources. The primary data collection is done by identifying the condition of land cover in the catchment area, the condition of the springs, the condition of land cover in a radius of 200 m, the performance of the fountain, the critical level of water catchment areas, the critical level of water catchment areas, the critical level of a radius of 200 m, utilization springs, and the dependence of communities on water resources. While the collection of secondary data obtained from BPLHD Kab. East Lampung in the form of water quality data from 12 springs. Spring Water Quality Analysis using WQI Malaysia with graphic works of Dr. GatotEkoSusilo, S.T., M.Sc. From the calculations, the average value of the 12 WQI water source is 95.1, meaning that all 12 springs are so richly used by people for drinking, bathing, cooking and others. The 12 water spring in the district of Batang Among them there are 5 springs, in the district of Marga Tiga there are 5 springs, in the District of Sri Bawono there is one source of water, and in District Jabung there is one source of water. Keywords: Water, Water Quality, East Lampung Spring Water, Water Quality Index Malaysia

Analisis Hidrologi dan Hidrolika pada Saluran Drainase Ramanuju Hilir Kotabumi (Menggunakan Program HEC-RAS) Muhammad Jazuli Mustofa; Dyah Indriana Kusumaastuti; Yuda Romdania
Jurnal Rekayasa Sipil dan Desain Vol 3, No 2 (2015): Edisi Juni 2015
Publisher : Jurnal Rekayasa Sipil dan Desain

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The calculation is done using the rainfall data obtained from BMKG Kotabumi North Lampung,from 1998 until 2011 with time increment in minutes. The Log Pearson III method is used to findthe design rainfall with return period 2 years, 5 years and 10 years. Then the result isimplemented in the Intensity-duration-frequency (IDF) curves. Time of concentration is linked intothe IDF curves to determine rainfall intensity. Based on the calculated rainfall intensity, thedesign discharge for each return period can be calculated using the rational method.The values of design discharge are then inputted as upstream boundary condition in HEC-RAS.Model output are presented in cross and long section to determine at which return period thedrainage capacity is overflowed. Simulation using HEC-RAS were also done to determine thechannel capacity.Based on the results of this research, it can be concluded that rainfall intensities are 52,6918mm/hour, 65,7820 mm/hour and 75,9032 mm/hour, for 2, 5, an 10 year return period respectively.The capacity of the drainage channel is 2.02 m 3 /hour and is expected to be exceeded on 5 yearsreturn period.Key words : Intensity, Rasioanal method, HEC-RAS, capacity

Perencanaa Sistem Penyediaan Air Baku di Kecamatan Punduh Pidada dan Kecamatan Padang Cermin, Kabupaten Pesawaran Merida Kristia; Gatot Eko Susilo; Yuda Romdania
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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The main needs of water for various purposes will continue to increase based on thenumber of people who continue to grow and the development of the rate of developmentsin various sectors. On the other hand, the number of infrastructure delivery of water iscurrently still relatively limited, that hasn’t meet the needs of water. The demandsunavoidable, but shall predictable and planned utilization as well as possible. A trendfrequent are the imbalance between supply and demand for water. To achieve a balancebetween the need for water and availability of water in the future , efforts are required tomeet builders infrastructure raw water community.Domestic water needs for Padang Cermin sub-district is 32,46 l / s and Punduh Pidadasub-district is 10 l / s for 2015. For the next 20 years, the demands for water will be71,18 l/s for Padang Pidada sub-district and 71,18 l/s for Padang Cermin sub-district.The availability of water must meet the size of the high demand for water in order tosatisfy their daily needs. Methods used to acknowledge the number of the availability ofwater is the method by F.J. Mock. The calculation on that available minimum dischargein das way selorejo is 78 l / s and das way curup is 97 l / s.From the calculation on above, the availability and needs water at das way curup anddas way selorejo had a surplus of the availability of water because environmentalconditions in kecamatan punduh pidada and kecamatan padang cermin is in goodcondition.Keywords : Water needs, availability of water, Water Supply Building Materials

Kajian Penggunaan Metode Empiris dalam Menentukan Debit Banjir Rancangan pada Perencanaan Drainase (Review) Ahmad Herison; Yuda Romdania; Ofik Taufik Purwadi; Rahmat Effendi
Jurnal Aplikasi Teknik Sipil Vol 16, No 2 (2018)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Air merupakan faktor terpenting, apabila tidak dikelola dengan baik dapat menimbulkan kerugian, salah satunya adalah banjir. Pencegahan banjir dengan mengoptimalkan saluran drainase. Kegiatan ini bertujuan untuk mereview penelitian terdahulu mengenai perencanaan drainase, khususnya metode yang dipakai untuk menghitung debit banjir rancangan. Metode yang digunakan antara lain: Metode Rasional, Weduwen dan Melchior. Penetapan masing masing metode bergantung pada data hujan, karakteristik daerah aliran, dan data debit. Berdasarkan review, penetapan metode untuk menghitung debit banjir rancangan didasarkan pada luas daerah tangkapan airnya. Lokasi penelitian yang memiliki luas DAS 0,53 ha sampai 97,34 ha menggunakan Metode Rasional, luas Daerah Aliran Sungai (DAS) 392, 1 ha menggunakan Metode Weduwen, luas DAS 77.088,8 ha menggunakan Metode Melchior. Kesimpulannya adalah, perhitungan debit banjir rancangan dengan luas DAS kurang dari 300 ha menggunakan Metode Rasional.Keywords: drainage, flood discharge design, rational method, melchior

Terumbu Karang dengan Kesesuaian Infrastruktur Menjadikan Green Belt Ekowisata Bahari di Pulau Tegal Kabupaten Pesawaran Ahmad Herison; Ahmad Zakaria; Irwani Ninik Wijaya; Yuda Romdania
Khasanah Ilmu - Jurnal Pariwisata Dan Budaya Vol 12, No 2 (2021): Jurnal Khasanah Ilmu - September 2021
Publisher : Universitas Bina Sarana Informatika

Abstrak Pulau Tegal merupakan salah satu destinasi wisata yang memiliki flora dan fauna yang beragam sehingga menjadi daya tarik wisatawan domestik maupun mancanegara. Potensi sumber daya alam dan infrastruktur pendukung yang terdapat di Pulau Tegal memerlukan adanya kajian tentang nilai kelayakan wisata. Tujuan dari penelitian ini yaitu menganalisis tentang nilai kelayakan ekowisata bahari yang ditinjau dari terumbu karang terhadap infrastruktur pendukung yang ada di Pulau Tegal. Metode yang digunakan dalam penelitian ini adalah analisis Indeks Kesesuaian Wisata (IKW), Daya Dukung Kawasan (DDK) dan Potensi Objek Wisata. Dari metode yang dilakukan didapatkan nilai kesesuaian ekowisata terumbu karang sebelah utara sebesar 78,95%, sebelah timur sebesar 78,95%, sebelah selatan sebesar 85,96% dan sebelah barat sebesar 84,21% sehingga masuk dalam kategori sangat sesuai. Analisis daya dukung kawasan wisata selam dan snorkeling di Pulau Tegal sebesar 59 wisatawan. Analisis Potensi objek wisata Pulau Tegal secara keseluruhan didapatkan hasil sebesar 87,87%. Dari hasil penelitian dapat disimpulkan bahwa ekowisata terumbu karang, dan infrastruktur pendukung di Pulau Tegal telah sesuai untuk kegiatan ekowisata bahari. Kata kunci : Terumbu Karang; Indeks Kesesuaian Wisata; Daya Dukung Kawasan; Potensi Objek Wisata; Pulau Tegal Abstract Tegal Island is one of the tourist destinations that has a variety of flora and fauna so that it becomes an attraction for domestic and foreign tourists. The potential of natural resources and supporting infrastructure on Tegal Island requires a study of the value of tourism feasibility. The purpose of this study is to analyze the feasibility value of marine ecotourism in terms of coral reefs and seagrass on the existing supporting infrastructure on Tegal Island. The method used in this research is the analysis of the Tourism Suitability Index (IKW), Regional Carrying Capacity (DDK) and the Potential of Tourism Objects. From the method used, the value of the suitability of coral reef ecotourism in the north is 78.95%, the east is 78.95%, the south is 85.96% and the west is 84. 21% so it falls into the very appropriate category. Analysis of the carrying capacity of the diving and snorkeling tourism areas on Tegal Island was 59 people. Analysis of the potential of the Tegal Island tourist attraction as a whole, the results obtained were 87.87%. From the results, it can be concluded that coral reef ecotourism, seagrass and supporting infrastructure on Tegal Island are suitable for marine ecotourism activities. Keywords: Coral; Tourism Suitability Index; Carrying Capacity; Potential Tourism Objects, Tegal Island

Analisis Data Curah Hujan yang Hilang dengan Menggunakan Metode Normal Ratio, Inversed Square Distance, Rata-Rata Aljabar dan Linear Regression (Studi Kasus Data Curah Hujan Beberapa Stasiun Hujan Wilayah Lampung Tengah) Annisa Putri Dwi Septiansari; Ahmad Zakaria; Siti Nurul Khotimah; Yuda Romdania
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Data hujan sangat penting dan dibutuhkan dalam perhitungan teknik sipil maka kelengkapan data hujan merupakan salah satu bagian terpenting dalam kaitannya perencanaan manajemen keairan, menajemen sumber daya air, maupun perencanaan pembangunan, terlebih lagi untuk perencanaan bangunan air. Namun sering kali terjadi data pada periode perekaman pada stasiun hujan yang ada di suatu wilayah tidak lengkap. Untuk melengkapi data curah hujan yang tidak lengkap atau hilang, maka pada penelitian ini dilakukan penelitian untuk memprediksi data curah hujan dengan menggunakan metode Normal Ratio, Linear Regression, Inversed Square Distance, Rata-rata Aljabar. Dari hasil penelitian ini metode modifikasi rata-rata aljabar didapatkan sebagai metode terbaik untuk pencarian data hujan yang hilang. Terbukti dari nilai korelasi rata-rata tahunan yang paling besar, yaitu: 0,301. Nilai ini menunjukkan bahwa hubungan antara data hujan terhadap korelasi tahunan masih lemah. Hal ini disebabkan nilai korelasi masih jauh dari angka 1 (nilai maksimum)

KAJIAN PENGGUNAAN METODE IP, STORET, dan CCME WQI DALAM MENENTUKAN STATUS KUALITAS AIR YUDA ROMDANIA; Ahmad Herison; Gatot Eko Susilo; Elza Novilyansa
Jurnal Spatial Wahana Komunikasi dan Informasi Geografi Vol 18 No 1 (2018): Jurnal SPATIAL - Wahana Komunikasi dan Informasi Geografi, Volume 18 Nomor 1, Ma
Publisher : Department Geography Education Faculty of Social Science - Universitas Negeri Jakarta

Air kebutuhan makhluk hidup yang utama dalam kehidupan sehari-hari. Pemantauan kualitas air perlu dilakukan pada air sungai, air laut, air danau, air rawa dan air tanah sehingga air dapat dimanfaatkan sesuai dengan kegunaannya. Kajian ini bertujuan untuk menganalisa penggunaan metode perhitungan indeks kualitas air dalam menentukan status kualitas air permukaan sehingga diketahui metode yang paling efektif, sensistif dan obyektif. Metode perhitungan Indeks Kualitas Air (IKA) diperlukan untuk menyederhanakan banyaknya nilai dari berbagai jenis parameter menjadi sebuah angka tunggal yang mampu mendeskripsikan kondisi kualitas air, sehingga lebih mudah dipahami oleh masyarakat. Ada beberapa metode perhitungan IKA di berbagai Negara, metode Storet, IP, dan CCME WQI (Canadian Council of Ministers of The Environment). Metode tersebut akan dibandingkan dengan beberapa indikator. Hasil kajian menunjukkan Metode IP lebih unggul jika memakai data tunggal, karena memiliki kelebihan dari segi biaya dan waktu namun hanya mempresentasikan status mutu air pada saat itu saja tidak dalam periode tertentu. Metode Storet dan CCME menggunakan data perulangan sepanjang waktu (time series data), sehingga lebih menggambarkan status mutu air dalam periode tertentu. CCME WQI lebih unggul dari Metode Storet dan Metode IP karena memperhitungkan besarnya selisih hasil pengujian yang melebihi baku mutu melalui F3 (Amplitude). Dari kajian di atas disimpulkan, Metode CCME merupakan metode yang paling tepat untuk menganalisis kualitas air di berbagai negara termasuk Indonesia baik pada air permukaan maupun air tanah dengan tingkat efektivitas dan sensitivitas yang lebih tinggi dibandingkan dengan metode lainnya serta penggunaan jumlah dan jenis parameter yang fleksibel. Kata kunci : Kualitas Air, Indeks Kualitas Air, Air Permukaan

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