Section Articles PERENCANAAN ULANG SISTEM DRAINASE BERWAWASAN LINGKUNGAN DI KAWASAN RW 08 KELURAHAN SUKUN KECAMATAN SUKUN KOTA MALANG JAWA TIMUR

Abstract

Road drainage is needed to prevent inundation. Inundation occurs due to the construction of drainage channels that are not in accordance with the discharege of rainwater runoff so that the water overflows and there is a puddle on the road. The purpose of this thesis is to design an environmentally drainage canal, evaluate the hydraulic aspects of the drainage buildings, calculate construction costs, and plan scheduling. The data needed are topographic maps, rainfall data from the 3 closest stations: Dau, Wagir, and Tajinan in 2009 until 2018, and the price of the Malang City work principal in 2018. The data is processed using the Gumbel I method, suitability test with Chi method –Square and Smirnov-Kolmogorov by a period of 5 years, rain intensity with the Mononobe method and design flood discharge with the rational method. The calculation results the design rainfall is 108.579 mm/day; discharge channel varies from 0.006 m3/s until 1.516 m3/s; environmentally drainage using infiltration wells with dimensions of 0.6 meters with a depth of 3 meters, and obtained infiltration well discharge 0.0233 m3/s; channel dimensions of 1 m x 1.1 m with freeboard 0.2 m.