EVALUATION OF FLOOD CONTROL DRAINAGE SYSTEM IN KOTABARU BANDAR KEMAYORAN JAKARTA PUSAT

• Main Author: Baihaqi Bey, Ahmad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/64145
• Institution: Institut Teknologi Bandung

The Kotabaru Bandar Kemayoran Drainage System area is a drainage system surrounded by the Sunter River with an area of 3,69 ????????2. The drainage system consists of main channels, reservoirs, swamps, and pumps. Based on existing data, this drainage system has several flood points including 1 in the east pademangan sub-district and 2 in the kemayoran sub-district. This area is covered by 3 rain stations but only 1 rain station is used. After analyzing the area of influence using the Thiessen polygon method, it is found that only one station has an area of influence. In evaluating the drainage system of this area, a 10-year return period of rain is used which has a value of 189.10 mm. Rainfall is used to design the dimensions of the drainage channel. In calculating the dimensions of the channel, the Manning method is used. The channel used uses a rectangular cross-section that standardizes the channel based on U-Ditch and also uses a trapezoidal cross-section with stone masonry material. It is obtained based on the calculation results that the drainage channel has the largest discharge value of 41.7 ????3/????. With a discharge of this magnitude, 3 pumps are pumped including 5 ????3/???? and 2 others 1.5 ????3/???? for 8 hours from the reservoir to the swamp. The maximum elevation reached in the swamp is +1.57 m which is then added with retaining walls as reinforcement with high 4 m.