Analisis dan Rancangan Bangunan Resapan Air Hujan di Sekitar Gedung Graha Widya Wisuda (GWW)-FEMA, Kampus IPB Darmaga, Bogor

Abstract

The high rainfall in an area and bad drainage systems can affected to surface runoff and flood. For example is Kampus IPB Darmaga, especially around Graha Widya Wisuda (GWW)-FEMA Building. The aims of this research is to design rainwater infiltration structure to solve the problem. This research held by rainfall analysis and soil permeability estimation. Mathematical calculation is performed to determine the volume of flooding, amount of infiltration wells and perforated ditch, and effectiveness of those infiltration structure. Every single infiltration wells can accommodate 0.017 mm rainfall. On the other hand, perforated ditch also designed much as 546 what can accommodate 0.009 mm of rainfall. Designed of infiltration structure could decrease 88 % of total flood as much as 63.65 mm. Remaining surface runoff as much as 7.64 mm capable accommodated drainage has been designed. Material costs needed to build a unit of infiltration wells is Rp 3,100,000.00.