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      Perencanaan Sistem Drainase dan Sumur Resapan di Cluster Vega Residence, Pondok Rajeg, Kota Depok

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      Date
      2023-07-10
      Author
      Ghufran, Irshadi
      Pandjaitan, Nora Herdiana
      Sutoyo
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      Abstract
      Limpasan yang terjadi akibat hujan merupakan salah satu faktor penyebab terjadinya banjir apabila tidak dikelola dengan baik. Meningkatnya lahan terbangun, menyebabkan peningkatan debit limpasan dan berkurangnya daerah resapan air hujan. Penelitian ini bertujuan merencanakan saluran drainase serta sumur resapan pada Cluster Vega Residence di Kota Depok. Metode yang dilakukan terdiri dari analisis curah hujan, analisis debit limpasan, desain saluran drainase, uji permeabilitas, dan desain sumur resapan. Curah hujan dianalisis dengan metode Gumbel. Dari hasil analisis diperoleh curah hujan rencana yang digunakan untuk perencanaan saluran drainase dengan periode ulang hujan 2 tahun sebesar 122,74 mm dan untuk sumur resapan dengan periode ulang hujan 5 tahun sebesar 150,95 mm. Debit limpasan untuk periode ulang hujan 2 tahun untuk perencanaan drainase sekitar 0,002 – 0,025 m3 /detik. Berdasarkan nilai debit limpasan, saluran drainase direncanakan akan menggunakan u-ditch berukuran 0,3 x 0,3 m pada semua DTA. Volume andil banjir untuk periode ulang hujan 5 tahun yang digunakan untuk perencanaan sumur resapan komunal sebesar 15,63 m3 dengan nilai permeabilitas rata-rata 2,18 cm/jam, sehingga direncanakan 1 buah sumur resapan dengan dimensi 2 x 2 x 4 m.
       
      Runoff due to rain is one of the factors causing flooding if it is not managed properly. The increasing of the built-up area will increase runoff and decrease infiltration area. This study aims to plan drainage channels and infiltration wells in the Cluster Vega Residence, Depok City. The method used consists of analysis of rainfall, runoff discharge analysis, drainage channel design, permeability test, and infiltration well design. Rainfall was analyzed by the Gumbel method. The analysis result showed that the planned rainfall used for planning drainage channels with a rainfall return period of 2 years was 122,74 mm and for infiltration wells with a rainfall return period of 5 years was 150,95 mm. The runoff discharge for 2 year rainfall return period for drainage planning is around 0,002 – 0,025 m3 /s. Based on the runoff discharge, drainage channels are planned to be built using u-ditch with a dimension of 0,3 x 0,3 m for all catchment areas. Flood volume for the 5 year rainfall return period for communal infiltration wells planning was 15,63 m3 with an average permeability of 2,18 cm/hour, so one infiltration well was designed with a dimension of 2 x 2 x 4 m.
       
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      http://repository.ipb.ac.id/handle/123456789/121286
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      • UT - Civil and Environmental Engineering [1043]

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      Indonesia DSpace Group 
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