Dian Fitria, M.Sc.

Currently, climate change and wellbeing provoke buildings to have higher sustainable performance.
So, the condition expects that buildings can tackle those issues that benefit and less impact the
environment and its occupants. This particular target needs integrated design approach that the role
of the iterative process is necessary. The study focuses on the process of façade design for the
buildings that are targeted to have sustainable performance. So, the design of the building façades
shall be in accordance with the green building standard issued by GBC Indonesia, Greenship NB
Version 1.2. The optimization of facade design was conducted based on three parameters: OTTV,
daylight, and outside view. The minimum requirements for each parameter is 35 Watts/sqm for
maximum OTTV, 30% for a minimum active area covered by daylight, and 75% for a minimum active
area with an outside view. One of the aims of this study is to give a depiction of how to conduct a
design process by using an iterative way. In addition, it is to identify the critical keys in enabling the
building to the requirements.

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