Responsive Facade Workflow: Hanwha Headquarters, Seoul, Korea
This study comprises the second part of the introductory Hanwha Headquarters Responsive Facade study compiled by our Smart Parameters Platform. While the first study focused on some of the key parameters specially tailored for the headquarters’ location in Cheonggyecheon, Seoul, the following study focuses on the workflow behind the facade design.
Facade Workflow: Module Distribution
In order to incorporate key variables into the design of the responsive facade of the Hanwha Headquarters, detailed studies were made for each parameter with specific regard to the building’s typology and location. The resultant outcomes provided a diverse range of possibilities for the expression of the facade. Ultimately, a pattern concept emerged from this range responding optimally to the aforementioned key parameters defined for the building. This pattern essentially consists of a limited set of base (parent) units. These base modules can be combined in groups of three, which then get assigned onto a specific sub-area on the façade.
Facade Workflow: Parent and Child Modules
Eighty percent of the overall facade is made up of the aforementioned base modules. The remaining twenty percent consist of modules with minor variations of the base modules. These variations resemble the base modules but incorporate differences necessary to address changes in floor-to-floor height, material changes for crown or MEP areas, and corners or stepped facade conditions. Thus these variations represent child modules to the base modules.
Facade Workflow: Unit-Maker Tool
The difficulty is that even a small variation of the parent geometry quickly results in an avalanche of child modules, which makes it necessary to develop a tool to automatically generate all possible facade unit variations. This “Unit-Maker Tool” takes basic geometric input information such as transom position, mullion dimensions, glass properties, etc., and outputs numerous facade units.
Facade Workflow: 3D to 2D Documentation
The base modules and all variants make up a facade-unit library which is then linked to an assembly script that builds up the overall facade of the tower. In order to accurately document the position of the facade units in relation to each floor, the script further allows for the generation of a basic floorplan drawing by outputting closed polylines of the geometry.