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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Journal of Engineering and Scientific Research (JESR) Publikasi Riset Orientasi Teknik Sipil (Proteksi) Jurnal Pengabdian Fakultas Pertanian Universitas Lampung
Nur Arifaini
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Transportation Other

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Analisis Hidrolika dan Perencanaan Tinggi Jagaan (Freeboard) Jembatan Kereta Api (BH-116 KM.63+317) pada Sungai Way Seputih Hibatulloh, Muhammad Hafidh; Arifaini, Nur; Khotimah, Siti Nurul
Jurnal Rekayasa Sipil dan Desain Vol 11, No 1 (2023): Edisi Maret 2023
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Evaluasi kondisi jembatan eksisting dilakukan sebagai acuan dalam perencanaan ulang suatu jembatan dalam hal ini jembatan kereta api jalur ganda pada sungai Way Seputih, kecamatan Seputih Agung, Lampung Tengah dengan beberapa kriteria yang harus terpenuhi diantaranya tinggi jagaan. Proses evaluasi diawali dengan analisis hidrologi menggunakan metode HSS Nakayasu untuk periode ulang 5,10, 25, 50 dan 100 tahun kemudian dilakukan analisis hidraulika menggunakan perangkat lunak HEC-RAS v5.0.7. Diperoleh debit banjir sebesar 444.532 m3/s, 544.032 m3/s, 695.973 m3/s, 830.442 m3/s dan 985.386 m3/s dan nilai elevasi muka air banjir secara berturut-turut yaitu +28.44 m, +29.00 m, +29.66 m, +30.16 m dan +30.71 m serta nilai tinggi jagaan jembatan eksisting berdasarkan elevasi MAB yaitu 11.56 m, 11.00 m, 10.34 m, 9.84 m dan 9.29 m untuk kala ulang 5,10,25,50 dan 100 tahun. Sehingga disimpulkan jembatan eksisting dinilai aman terhadap muka air banjir dan elevasi gelagar terbawah pada jembatan jalur ganda direncanakan mengikuti elevasi gelagar terbawah jembatan eksisting. 
Analisis Hidrolika dan Perencanaan Tinggi Jagaan (Freeboard) Jembatan Kereta Api (BH-102 KM. 53 + 778) pada Sungai Way Tipo Bekri Kabupaten Lampung Tengah Elvida, Maharani; Arifaini, Nur; Tugiono, Subuh; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain Vol 11, No 1 (2023): Edisi Maret 2023
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

The planning of a railway bridge over the river is carried out by analyzing the hydraulic factors on the river in accordance with PM No. 60 of 2012 concerning Technical Requirements for Railway Lines. Hydrological and hydraulics analysis was carried out using the HSS Nakayasu method and the HEC-RAS v5.0.7 application program. This study aims to analyze the height of the flood water level based on hydraulic factors on the Way Tipo River and to design a guard height limit (freeboard) railway bridge based on the previously calculated water surface elevation results. Hydraulic analysis and high maintenance planning (freeboard) railway bridge (BH-102 KM. 53 + 778) on the Way Tipo Bekri River, Central Lampung Regency, resulting in flood discharge values for 50 and 100 year return periods of 742,281 m respectively3/s and 854,431 m3/s, the flood water level (MAB) is +45,38 m and +45,51 m, as well as the freeboard the length of the bridge is 1,32 m for the 50 year return period and 1,19 m for the 100 year return period in terms of the difference between the flood water level and the bottom girder of the bridge. It was concluded thatfreeboard The obtained railroad bridge meets the planning criteria, namely at least 1 meters from the bottom girder of the bridge to the flood water level.Key words : railway bridge, hydrology, hydraulics, HSS Nakayasu, HEC-RAS. Perencanaan jembatan kereta api di atas sungai dilakukan dengan menganalisa faktor hidrolika pada sungai sesuai dengan PM No.60 Tahun 2012 tentang Persyaratan Teknis Jalur Kereta Api. Analisis hidrologi dan hidrolika dilakukan menggunakan metode HSS Nakayasu dan program aplikasi HEC-RAS v5.0.7. Penelitian ini bertujuan untuk menganalisis tinggi muka air banjir berdasarkan faktor hidrolika pada Sungai Way Tipo serta merancang batas tinggi jagaan (freeboard) jembatan kereta api berdasarkan hasil elevasi muka air yang telah dihitung sebelumnya. Analisis hidrolika dan perancangan tinggi jagaan (freeboard) jembatan kereta api (BH-102 KM. 53 + 778) pada Sungai Way Tipo Bekri Kabupaten Lampung Tengah menghasilkan nilai debit banjir untuk kala ulang 50 dan 100 tahun masing-masing sebesar 742,281 m3/s dan 854,431 m3/s, elevasi muka air banjir (MAB) sebesar +45,38 m dan +45,51 m, serta nilai freeboard jembatan adalah 1,32 m untuk kala ulang 50 tahun dan 1,19 m untuk kala ulang 100 tahun ditinjau dari selisih antara elevasi muka air banjir dengan gelagar terbawah jembatan. Disimpulkan bahwa freeboard jembatan kereta api yang diperoleh sudah memenuhi kriteria perencanaan yaitu minimal 1 meter dari gelagar terbawah jembatan terhadap muka air banjir. Kata kunci : jembatan kereta api, hidrologi, hidrolika, tinggi jagaan, HSS Nakayasu, HEC-RAS.
Review: The Use of Eco-Enzymes in Greywater Treatment Khotimah, Siti Nurul; Ginting, Simparmin Br; Arifaini, Nur; Mardhotillah, Nur Anisa; Puligadda, Lohit Krishna Pranav
Journal of Engineering and Scientific Research Vol. 6 No. 1 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i1.169

Abstract

Water pollution such as in rivers has become a concern due to its impact on health and the decreasing availability of clean water. There is a common assumption that industrial pollution is the main cause of water pollution. However, an interesting fact is that river pollution is largely dominated by contamination from household wastewater (domestic waste) discharged directly into drainage systems and ending up in rivers without prior treatment. Such cases are particularly prevalent in developing countries. Therefore, the challenge is to find solutions to treat domestic wastewater using simpler and cheaper technologies. Current research is focused on treating domestic wastewater especially greywater with eco-enzymes. Eco-enzymes are enzymes produced from the fermentation process of organic materials such as fruit peels or vegetable scraps for a minimum of three months. This paper will review the treatment of greywater using eco-enzymes, including the eco-enzyme production process, its characteristics, greywater characteristics, the methods employed, and the research findings. Finally, the paper will recommend possible avenues for further research related to the treatment of greywater using eco-enzymes
The Performance Assessment of Irrigation System on Tertiary Irrigation Network of Jabung Irrigation Area, East Lampung Regency: Performance Assessment of Irrigation System on Tertiary Irrigation Network of Jabung Irrigation Area, East Lampung Regency Mahardika, Siti; Dyah Indriana Kusumastuti; Endro Prasetyo Wahono; Nur Arifaini
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 7 No 1 (2025): Volume 7 No 1 Tahun 2025
Publisher : Universitas Negeri Surabaya

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Abstract

Jabung Irrigation Area is one of the irrigation areas located in East Lampung Regency with an area of 7,288 hectares. Jabung Irrigation Area has a problem of uneven water distribution. This problem occurs in the downstream area due to damage to physical infrastructure, especially in tertiary irrigation canals, and sub-optimal operation and maintenance activities. Therefore, based on the Minister of Public Works and Housing Regulation No. 12/PRT/M/2015 concerning the Exploitation and Maintenance of Irrigation Networks, a study was conducted on determining the Irrigation System Performance Index (IKSI) of the tertiary network in the Jabung Irrigation Area. The purpose of this study is to assess the performance of the tertiary irrigation system of the Jabung Irrigation Area which is useful for formulating follow-up programs such as repair, rehabilitation, and maintenance of the irrigation network. The research method was carried out using a qualitative descriptive method and direct assessment in the field as well as interviews. The assessment covers 6 aspects, namely the condition of physical infrastructure, crop productivity, supporting facilities, personnel organization, documentation, and Farmers' Water Users Association (P3A). The results showed that the performance of the tertiary irrigation network in the Jabung Irrigation Area is in good condition (70.54%).
Peningkatan Kapasitas Mitigasi Bencana Tsunami Melalui Program Perawatan Terumbu Karang Buatan di Desa Kunjir, Kabupaten Lampung Selatan Kusuma, Anma Hari; Siregar, Amril Ma’ruf; Arifaini, Nur; Kustiani, Ika
Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol. 3 No. 2 (2024): Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol 3 No 2, September
Publisher : Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpfp.v3i2.9724

Abstract

Indonesia merupakan salah satu negara dengan posisi tempat bertemunya tiga lempeng tektonik dunia sehingga sebagai tempat berkumpulnya berbagai macam bencana. Bencana adalah peristiwa atau rangkaian peristiwa yang mengancam dan mengganggu kehidupan dan penghidupan masyarakat yang disebabkan, baik oleh faktor alam, non-alam dan kelalaian manusia sehingga mengakibatkan timbulnya korban jiwa manusia, kerusakan lingkungan, kerugian harta benda, dan dampak psikologis. Tsunami adalah salah satu jenis dari bencana tersebut. Tsunami adalah gelombang laut besar yang ditimbulkan oleh gempa bumi di dasar laut karena adanya subduksi lempeng, pergerakan patahan, letusan gunung berapi dasar laut. Desa Kunjir adalah salah satu desa yang ada di Kabupaten Lampung Selatan yang terkena dampak bencana tsunami. Meskipun Desa Kunjir memiliki potensi yang besar terhadap bencana tsunami tetapi rencana mitigasi terhadap ancaman bencana tsunami yang dimiliki oleh masyarakat desa masih sangatlah minim, Mitigasi dapat berupa pembuatan terumbu karang buatan. Kegiatan ini dilaksanakan di Desa Kunjir, Kecamatan Rajabasa, Kabupaten Lampung Selatan, Provinsi Lampung. Pelaksanaan kegiatan transplantasi dilakukan melalui dua tahapan yaitu tahap persiapan, pelaksanaan dan evaluasi.  Berdasarakan kegiatan yang dilakukan dapat disimpulkan bahwa adanya peningkatan pemahaman dan keterampilan kelompok mitra dalam penerapan teknologi terumbu buatan dan adanya peningkatan pengetahuan mengenai perawatan terumbu karang.
Co-Authors Adit Pratama Hendri Ahmad Zakaria Ahmad Zakaria Amril Ma'ruf Siregar Anma Hari Kusuma, Anma Hari Aulia Vinandhitha Bustomi Rosadi Dyah Indriana Kusumastuti Elvida, Maharani Endro Prasetyo Wahono Fitri Trisdiana Florince Florince Hatwan Fardilla Hibatulloh, Muhammad Hafidh Idharmahadi Adha Ika Kustiani Irvan Tegar Cesar Ismawan Dewan Syah Mahardika, Siti Mardhotillah, Nur Anisa Ofik Taupik Purwadi Puligadda, Lohit Krishna Pranav Randy Setiawan, Randy Riki Chandra Wijaya Setyanto Setyanto Simparmin br Ginting Siregar, Amril Ma’ruf Siti Nurul Khotimah Subuh Tugiono, Subuh Susi Hariany Yance Y D Warikar