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OPTIMASI PINTU AIR DAERAH IRIGASI (D.I) PUNGGUR UTARA ZONA C PETAK 16 KIRI 1 KABUPATEN LAMPUNG TIMUR DAN LAMPUNG TENGAH Mardika, M Gilang Indra; Fitriana, Indri Rahmandhani; Rahmawati, Vaisyah
Jurnal Teknik Sipil Vol. 18 No. 1 (2024)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v18i1.9993

Daerah Irigasi Punggur Utara, bagian dari Sistem Sekampung, mencakup 132,28 hektar di Kabupaten Lampung Tengah, Lampung Timur, dan Kota Metro. Tantangan utamanya adalah distribusi air yang tidak efisien, menyebabkan pemborosan dan persaingan atas sumber daya air yang terbatas. Untuk mengatasi masalah ini, pintu air dioptimalkan dengan menyesuaikan hubungan antara ketinggian pintu dan kebutuhan air. Daerah ini mengikuti pola tanam Padi-Padi-Bera, dengan data curah hujan dari tahun 2014-2023 menunjukkan puncak 5,13 mm/hari pada bulan Maret. Kebutuhan air berkisar dari 0,04 m³/detik di bulan April hingga 0,20 m³/detik di bulan Mei. Pintu air Crump de Gruyter, dengan lebar 0,75 meter dan koefisien 0,913, mengatur aliran air. Bukaan pintu 5 cm menyediakan 0,20 m³/detik untuk memenuhi kebutuhan tertinggi, sedangkan bukaan 1 cm menghasilkan 0,04 m³/detik untuk kebutuhan terendah. Optimalisasi dilakukan menggunakan Pemrograman Linear melalui Solver, menyesuaikan ketinggian pintu untuk memenuhi kebutuhan irigasi dalam batas kapasitas. Metode ini meningkatkan manajemen sumber daya air di Punggur Utara.

Focus Group Discussion (FGD) Penyusunan Kurikulum 2025 - 2030 Program Studi Teknik Sipil Institut Teknologi Sumatera Kurniawan, Rahmat; Michael, Michael; Syuhada, Syahidus; Maini, Miskar; Fitriana, Indri Rahmandhani; Hayati, Julita; Dwiyana, Putri Ayu; Mardika, M Gilang Indra; Aprilia, Ayu Sinta; Khanza, Ayu Kamila; Saputra, Cahyo Agung; Prayogi, Galih Rio; Ribowo, Anggarani Budi; Yudi, Ahmad; Nadi, Muhammad Abi Berkah
Jurnal Pengabdian Masyarakat Bhinneka Vol. 4 No. 1 (2025): Bulan September
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v4i1.463

Penyusunan kurikulum berbasis Outcome Based Education (OBE) merupakan upaya strategis untuk memastikan ketercapaian kompetensi lulusan yang relevan dengan kebutuhan dunia kerja, perkembangan teknologi, dan tantangan pembangunan berkelanjutan. Sejalan dengan hal tersebut, Program Studi Teknik Sipil Institut Teknologi Sumatera (ITERA) menyelenggarakan Focus Group Discussion (FGD) sebagai wadah kolaboratif dalam merumuskan Kurikulum 2025–2030. Proses ini melibatkan pemangku kepentingan internal dan eksternal, termasuk dosen, mahasiswa, alumni, praktisi, asosiasi profesi, serta pengguna lulusan. Kurikulum yang dikembangkan dirancang sesuai dengan standar Outcome Based Education (OBE) dan kriteria akreditasi LAM Teknik, dengan penekanan pada penguatan kompetensi inti bidang teknik sipil, integrasi teknologi digital, prinsip keberlanjutan lingkungan, serta pengembangan soft skills mahasiswa. Hasil FGD ini menghasilkan rekomendasi kurikulum yang adaptif, aplikatif, dan berorientasi pada capaian pembelajaran lulusan (CPL) yang selaras dengan standar nasional maupun internasional, sekaligus mendukung visi ITERA untuk menjadi perguruan tinggi yang unggul dalam sains, teknologi, dan inovasi.

Study of Jetty Planning as Coastal Protection Structure to Address Estuary Sedimentation: Case Study of Lubuk Tukko Beach, North Sumatra Province Mardika, M Gilang Indra; Fitriana, Indri Rahmandhani; Sihombing, Tera Melya Patrice; Lumbantobing, Oscar
BANDAR: JOURNAL OF CIVIL ENGINEERING Vol 7 No 2 (2025): Bandar: Journal of Civil Engineering
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/bjce.v7i2.4703

Sediment transport from the sea can cause estuary siltation. The effective jetty construction planning is one of problem addressing structurely. To derive the elevation and dimensions of an effective jetty structure in addressing the estuary sedimentation at Lubuk Tukko Beach, North Sumatra Province, wave analysis is conducted using the hindcasting method and tidal analysis using the admiralty method. The research analysis show that the wave height design is 0.676 meters and the highest water surface elevation is 0.616 meters. The type of jetty used is a long jetty with a left jetty length of 394 meters and a right jetty length of 426 meters. The elevation of the right jetty end is 2.5 meters, with a building top width of 1 meter, and the elevation of the left jetty end is 2.6 meters, with a top width structure of 1 meter.

PENILAIAN POTENSI BANJIR BANDANG MENGGUNAKAN METODE FLASH FLOOD POTENTIAL INDEX (FFPI) DENGAN MODEL KRUZDLO (STUDI KASUS: SUB DAS WAY ILAHAN, LAMPUNG) Fitriana, Indri Rahmandhani; Sahid, Sahid; Putra, Riyan Hari
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i1.5925

A flash flood is a rapidly occurring flood with a high discharge rate and significant destructive power. Flash floods result from a combination of natural factors and human activities and have serious consequences for society, such as loss of life, infrastructure damage, and environmental impact. This study aims to map the potential hazard areas of flash floods in the catchment area of Way Ilahan, Tanggamus Regency, Lampung Province using the Flash Flood Potential Index (FFPI) method based on GIS with the Kruzdlo model (2010). This method processes spatial data such as slope maps, vegetation density, land use, and soil texture. Through this approach, flash flood hazard classes can be identified based on regional characteristics analyzed within a GIS system using raster processing techniques. The study results indicate that 363.63 hectares of the Way Ilahan catchment area fall into the high-category flash flood hazard class, while 19,089.18 hectares are categorized under the medium-level hazard class. Through this mapping, relevant stakeholders such as local governments and communities can take more effective preventive measures to reduce the impact of flash flood disasters.

PENILAIAN POTENSI BANJIR BANDANG MENGGUNAKAN METODE FLASH FLOOD POTENTIAL INDEX (FFPI) DENGAN MODEL KRUZDLO (STUDI KASUS: SUB DAS WAY ILAHAN, LAMPUNG) Fitriana, Indri Rahmandhani; Sahid, Sahid; Putra, Riyan Hari
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i1.5925

A flash flood is a rapidly occurring flood with a high discharge rate and significant destructive power. Flash floods result from a combination of natural factors and human activities and have serious consequences for society, such as loss of life, infrastructure damage, and environmental impact. This study aims to map the potential hazard areas of flash floods in the catchment area of Way Ilahan, Tanggamus Regency, Lampung Province using the Flash Flood Potential Index (FFPI) method based on GIS with the Kruzdlo model (2010). This method processes spatial data such as slope maps, vegetation density, land use, and soil texture. Through this approach, flash flood hazard classes can be identified based on regional characteristics analyzed within a GIS system using raster processing techniques. The study results indicate that 363.63 hectares of the Way Ilahan catchment area fall into the high-category flash flood hazard class, while 19,089.18 hectares are categorized under the medium-level hazard class. Through this mapping, relevant stakeholders such as local governments and communities can take more effective preventive measures to reduce the impact of flash flood disasters.

Pendampingan Teknis Pengelolaan Limbah Industri Batching Plant dan Asphalt Mixing Plant dalam Mendukung Penyediaan Material Konstruksi Beton Ribowo, Anggarani Budi; Susanti, Junita Eka; Kurniawan, Rahmat; Dwiyana, Putri Ayu; Saputra, Cahyo Agung; Prayogi, Galih Rio; Fitriana, Indri Rahmandhani; Hayati, Julita; Mardika, M Gilang Indra; Aprilia, Ayu Sinta; Khanza, Ayu Kamila; Michael, Michael; Yudi, Ahmad; Nadi, Muhammad Abi Berkah; Wirawan, Nugraha Bintang
Jurnal Pengabdian Masyarakat Bhinneka Vol. 4 No. 3 (2026): Bulan Februari
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v4i3.1232

Industri Batching Plant dan Asphalt Mixing Plant (AMP) berperan strategis dalam penyediaan material konstruksi, namun aktivitas operasionalnya menghasilkan limbah padat dan cair yang berpotensi mencemari lingkungan apabila tidak dikelola secara optimal. Sebagai upaya mendukung pengelolaan limbah yang berkelanjutan, tim dosen dan mahasiswa Program Studi Teknik Sipil Institut Teknologi Sumatera (ITERA) melaksanakan kegiatan Pengabdian kepada Masyarakat di Provinsi Lampung dengan fokus pada pendampingan identifikasi, pengolahan, dan pemanfaatan limbah industri sebagai bahan baku alternatif beton non-struktural ramah lingkungan. Metode kegiatan meliputi observasi lapangan untuk mengidentifikasi jenis dan volume limbah, pengambilan sampel sludge beton, sisa agregat, serta debu produksi AMP, pengujian karakteristik fisik material di laboratorium, dan perancangan variasi campuran beton dengan substitusi sebagian agregat menggunakan material limbah yang telah melalui proses pengeringan dan pengayakan. Evaluasi dilakukan melalui pengujian kuat tekan beton pada beberapa variasi komposisi limbah. Hasil menunjukkan bahwa pada komposisi limbah 20%–30%, beton non-struktural mampu mencapai kuat tekan rata-rata 12,73 MPa dan masih memenuhi persyaratan teknis untuk aplikasi seperti paving block dan elemen pracetak ringan. Namun, pada komposisi 75%, kuat tekan menurun signifikan menjadi 5,85 MPa. Dengan ketersediaan limbah sekitar 1–2 ton per minggu, pemanfaatan optimal pada kisaran 20%–30% berpotensi mendukung produksi beton non-struktural berkelanjutan serta penerapan prinsip ekonomi sirkular di sektor konstruksi.

Tsunami Inundation Modelling and Mapping Based on Megathrust Predictions along the Kalianda Coast of Lampung Province Using Delft3D Mardika, M Gilang Indra; Fitriana, Indri Rahmandhani; Tobing, Revin Valent Lumban
BANDAR: JOURNAL OF CIVIL ENGINEERING Vol. 8 No. 1 (2026): Bandar: Journal of Civil Engineering
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/bjce.v8i1.5737

Indonesia is situated along active subduction zones such as the Sunda Strait, making the country particularly Lampung Province highly vulnerable to megathrust-induced tsunami events. According to data compiled by the National Center for Earthquake Studies 2017, the Sunda Strait has the potential to experience a major earthquake with a magnitude of Mw 8.7–8.8. One notable historical event was the 2018 Kalianda tsunami, which caused numerous fatalities and significant infrastructure damage. This study aims to model and map tsunami inundation in the Kalianda coastal area based on potential megathrust earthquake scenarios. Simulations were carried out using Delft3D and GIS software and validated against historical data from the 2018 tsunami. The validation process used the Mean Absolute Error (MAE) method and correlation coefficient (R), resulting in an error of 0,2357 (23.57%) and a correlation value of 0,543. Three tsunami scenarios were modeled. In Scenario 1, the tsunami wave propagated for 100 minutes, reached a maximum height of 1 meter, and traveled 446,32 meters inland. In Scenario 2, the wave did not reach the shoreline. In Scenario 3, the wave arrived at the coast after 90 minutes, reached a height of 0,4 meters, and inundated up to 1016 meters inland. These results contribute to understanding tsunami hazards and provide insights for improving mitigation strategies in vulnerable coastal areas.

Sediment Transport Modelling Terhadap Pengaruh Debit dan Pasang Surut Pasca Perencanaan Jetty di Muara Sungai Air Hitam Bengkulu Mardika, M Gilang Indra; Fitriana, Indri Rahmandhani; Ginting, Mekel Grendy
Jurnal Infrastruktur Vol. 12 No. 1 (2026): Jurnal Infrastruktur
Publisher : Jurnal Infrastruktur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/4rkhs897

Central Bengkulu Regency is an area where the Air Hitam River estuary, located within the regency, was experiencing several problems, such as shifting estuaries due to sedimentation and shallowing. Sediment characteristics, flow velocity, and the influence of structures around the estuary were factors in this sedimentation and shallowing.This study uses data form of sediment samples collected at 3 locations as primary data, each with 3 sampling points. The research aims to analyze sedimentation in the Air Hitam River following the planned construction of a jetty at the estuary mouth. Laboratory testing and modeling using HEC-RAS were conducted to determine sediment grain size distribution and specific gravity. Laboratory results show the sediment is classified as sand with a specific gravity indicating inorganic soil. The design flood discharge calculation using the Synthetic Unit Hydrograph Nakayasu method resulted in a peak discharge of 307.011 m³/s for a 25-year return period. HEC-RAS modeling showed that sediment deposition was not significant after the jetty construction plan at the estuary. This is influenced by the dominant sediment type being sand, which has a very low settling velocity of 0.00000002753 m/s, while the flow velocity at the same point reached 3.38 m/s.

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