STORMWATER MANAGEMENT DESIGN WITH LOW IMPACT DEVELOPMENT SYSTEM IN MIXED USE BUILDING THE TERRACE CIBADAK BANDUNG

• Main Author: El Faiz, Naoval
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik sipil
• Online Access: https://digilib.itb.ac.id/gdl/view/54228
• Institution: Institut Teknologi Bandung

In designing mixed use building – The Terrace, there is a need to design a stormwater management which conventionally consists of roof drainage and regular drainage system. However, the conventional practices do not consider the effect of increased stormwater runoff that is being released to building surroundings. Therefore, there is a need to introduce Low Impact Development concept to better manage stormwater so that the stormwater runoff after the project is equal or less the Pre-Project stormwater runoff which equals to 0,01319 m3/s. The Low Impact Development components consist of Green Roof, Rainwater Harvesting system, and bioretention which is based on a 40 years modelling. Green Roof designed has an area of 1778,024 m2, Rainwater Harvesting system designed has a tank with 150 m3 capacity and bioretention designed has an area of 1070,664 m2. The construction of conventional system costs Rp. 256.013.067 which yields runoff of 0,04389 m3/s. The construction of Low Impact Development System costs Rp. 1.527.079.429 which yields runoff of 0,01307 m3/s and this value is acceptable as it is within the Zero Delta Runoff value.