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      Perencanaan Sistem Drainase Zero Runoff di Masjid Al-Hurriyyah

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      Date
      2026
      Author
      EL-QUDS, NAJWA RESAALA
      Setiawan, Budi Indra
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      Abstract
      Kawasan Masjid Al-Hurriyyah IPB University memiliki dominasi permukaan kedap air yang menyebabkan sebagian besar air hujan menjadi limpasan permukaan dan memicu genangan pada area parkir timur dan selatan. Penelitian ini bertujuan merencanakan dimensi bioswale dan sumur resapan, mengevaluasi efektivitas sistem drainase berbasis zero runoff, serta menyusun rencana anggaran biaya pembangunan. Analisis hidrologi dilakukan menggunakan data curah hujan maksimum tahunan periode 2006–2025. Distribusi Weibull dipilih sebagai distribusi terbaik dengan nilai koefisien determinasi sebesar 0,986. Debit limpasan dihitung menggunakan Metode Rasional, sedangkan volume andil banjir digunakan sebagai dasar perencanaan fasilitas infiltrasi. Hasil penelitian menunjukkan bahwa curah hujan rencana kala ulang 2 tahun sebesar 131 mm menghasilkan debit limpasan sebesar 0,0648 m³/detik dan volume andil banjir sebesar 909,84 m³. Sistem yang direncanakan terdiri atas bioswale sepanjang 320 m dan 16 unit sumur resapan dengan kapasitas infiltrasi total sebesar 119,19 m³. Sistem mampu mengurangi limpasan pada zona timur sebesar 64,76% dan zona selatan sebesar 34,35%, serta mencapai kondisi zero runoff hingga curah hujan 18 mm. Total biaya pembangunan sistem drainase sebesar Rp1.144.828.160 termasuk PPN 12%. Hasil penelitian menunjukkan bahwa kombinasi bioswale dan sumur resapan dapat meningkatkan infiltrasi, mengurangi limpasan permukaan, dan mendukung penerapan drainase berkelanjutan pada kawasan kampus.
       
      The Al-Hurriyyah Mosque area at IPB University is dominated by impervious surfaces, causing a large proportion of rainfall to become surface runoff and resulting in ponding in the eastern and southern parking areas. This study aimed to design bioswales and infiltration wells, evaluate the effectiveness of a zero runoff-based drainage system, and estimate the construction cost. Hydrological analysis was conducted using annual maximum rainfall data from 2006–2025. The Weibull distribution was selected as the best-fit distribution with a coefficient of determination (R²) of 0.986. Runoff discharge was calculated using the Rational Method, while flood runoff volume was used as the basis for designing infiltration facilities. The results showed that the 2-year return period rainfall of 131 mm generated a runoff discharge of 0.0648 m³/s and a flood runoff volume of 909.84 m³. The proposed system consists of 320 m of bioswales and 16 infiltration wells with a total infiltration capacity of 119.19 m³. The system reduced runoff by 64.76% in the eastern zone and 34.35% in the southern zone and achieved zero runoff conditions for rainfall events up to 18 mm. The total construction cost of the drainage system was IDR Rp1.144.828.160 including 12% tax.
       
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      http://repository.ipb.ac.id/handle/123456789/173871
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      • UF - Civil and Environmental Engineering [1060]

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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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