#TITLE_ALTERNATIVE#

• Main Author: SARI SHALLIHAT ( NIM 15309068 ), ADITTA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20748
• Institution: Institut Teknologi Bandung

During the rainy season, flood disaster often occurs around the Cikeruh River which flows through Bandung Regency. Heavy flood disaster in particular occurred in Rancaekek Subdistrict which brought great damages, due to the area is located adjacent to the Bandung City, the capital city where many important activities occur. High sedimentation cause river silting and decrease the ability of the river to accommodate the current flow of high rainfall intensity. The hydraulic model is based on HEC’s River Analysis System (HEC-RAS), version 4.1.0, which calculates one-dimensional steady state flow. Calibration of the model with appropriate data is a crucial step in the creation of reliable river representation.The result of calibration shows that Manning roughness coefficient is 0,035. The results of steady state simulation shows that most of all the cross section depth exceeds the freeboard (0,5 meters) and flooded. The highest floods reaching 3,61 meters while the lowest reaching 0,53 meters. Planning normalization done at all cross-sections with a single trapezoidal sectional shape. The slope channel walls are 0,5 and 1,5, channel depth of 5 meters, and the width varies between 15-27 meters. Based on simulations of normalization, all cross sections can accomodate 20-years flood discharge plan and fullfill the freeboard criteria of 0,5 meters. The average height difference of all section is 1,78 meters