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Evaluasi Pola Distribusi Stasiun Hujan Kota Medan Rahmadani, Sarra; Harahap, Rumilla; Pongtuluran, Ezra Hartarto
JST (Jurnal Sains Terapan) Vol 9, No 1 (2023): JST (Jurnal Sains Terapan)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jst.v9i1.1737

Abstract

Stasiun hujan merupakan aspek penting dalam Analisa hidrologi yang berfungsi sebagai tempat didirikannya alat pengukur curah hujan yang mana dapat memberikan informasi mengenai besaran jumlah hujan yang jatuh pada suatu Kawasan. Banyaknya stasiun hujan dalam sistem kawasan harus direncanakan dan didistribusikan dengan optimal agar hasil yang diperoleh efektif dan efisien. Penelitian ini dilakukan di tiga stasiun hujan Medan yaitu Stamar Belawan, Helvetia dan BBMKG Wil 1 dengan tujuan evaluasi pola distribusi atau kerapatan stasiun hujan Kota Medan. Metode yang digunakan adalah deskriptif evaluative kemudian dianalisis dengan Kagan Rodda. Hasil evaluasi luas total daerah pengaruh sebesar 39.85 km2 dengan menggunakan Poligon Thiessen dan ArcGIS 10.82. Dalam hal ini stasiun helvetia merupakan stasiun dengan luas daerah pengaruh terbesar yaitu 28.30 Km2 atau sama dengan 71% dari luas total. Rasionalisasi dengan Kagan-Rodda menghasilkan panjang sisi segitiga (L) adalah 3.02 Km. Kebutuhan stasiun hujan Kota Medan dianggap telah mampu mewakili seluruh kawasan Kota Medan dengan nilai kesalahan pemerataan <5% adalah 4.83%.
EVALUASI KINERJA DRAINASE JALAN SOEKARNO-HATTA KOTA BINJAI Rahmadani, Sarra; Sutrisno, Sutrisno; Harahap, Rumilla; Wibowo, Harry; Zulfikar, Ahmad; Fadillia, Mena; Barlian, Edo; Indrayani, Indrayani
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol. 29 No. 1 (2024): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v29i1.5652

Abstract

Jalan Soekarno-Hatta is located in East Binjai District, Binjai City. Along this road, there is always quite high flooding when it rains. Flood events are usually caused by the intensity of rainfall and less than optimal drainage performance, where drainage should be a system whose function is to channel and circulate air that comes from rain, or seepage experiences damage and sedimentation so that it cannot function optimally. In order to minimize flooding on Jalan Soekarno-Hatta, it is necessary to evaluate drainage performance by reviewing existing conditions, taking into account rainfall intensity values and planned discharge to determine optimal capacity for more optimal drainage performance in collecting, channeling and channeling rainwater. This was done using an evaluative descriptive method with the length, width and depth of the drainage observed at 1630 m, 110 m and 1.27 m. The results were that the selected rainfall intensity value (period 5; year, 2027) was 125.866 mm/hour, concentration time (tc) 184.67 hours, drainage coefficient 0.925 resulting in planned discharge>drainage discharge (Qr>Qs) namely 278102.6 m3/ sec > 31478.6 m3/sec. These results indicate that Soekarno-Hatta's drainage capacity is unable to accommodate large (planned) discharges, resulting in flooding. Solutions that can be applied are reducing sedimentation, increasing the dimensions of the drainage itself or forming biopores.
A Review of Sustainable Water Practices: Teaching High School Students to Manage and Purify Water for Daily Needs Prayogo, Wisnu; Ihsan, Muhammad Faris; Awan, Fajriharish Nur; Mawaddah, Nurul; Khairuni, Zhilli Izzadati; Wibowo, Harry; Atika, Liana; Trimailuzi; Tinov, Naufal; Rahmadani, Sarra; Maulida, Fatimah; Lukman, Mena Fadillia
Indonesian Journal of Social and Environmental Issues (IJSEI) Vol. 5 No. 3 (2024): December
Publisher : CV. Literasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47540/ijsei.v5i3.1724

Abstract

Access to clean and safe water is a fundamental human need, yet millions of people around the world still lack reliable sources of potable water. Educating high school students about sustainable water practices is crucial to ensuring that future generations are equipped to manage and purify water resources effectively. This review examines the importance of teaching water management and purification to high school students, with a focus on practical, low-cost methods that can be implemented using simple tools and techniques. The review explores various hands-on approaches to water education, including basic water quality assessment, filtration methods, and affordable purification technologies such as sand filtration, boiling, and solar disinfection. It also highlights the pressing global issue of water scarcity, noting that over 2 billion people still rely on unsafe drinking water sources. In addition to theoretical knowledge, students engage in fieldwork and laboratory experiments, where they test and treat local water sources, gaining practical experience with real-world water challenges. By the end of the program, students are equipped with the knowledge and skills to identify safe water sources and apply basic treatment methods for daily use, such as drinking, cooking, bathing, and sanitation. The initiative aims to foster environmental awareness, encourage responsible water use, and promote community-driven solutions to water scarcity and contamination, empowering students to contribute to sustainable water practices in the future.