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ARCH 655 Project 1

Lotte World Tower Model Development

1. Building Information


• Location: Seoul, South Korea

• Description:

- 123-floor

- 555-meter skyscraper

- The 6th tallest building in the world

- Opened on April 11, 2017

- Served for offices, hotels, and residence









2. Mass Design


The building has been divided into two parts: bottom and top.
NURBS was created in Grasshopper with degrees of three and based on the points in the figure.




The NURBS was stacked up to form the bottom part of the model. Later, only the top and bottom of NURBS were used to make a loft. The remaining parts were regarded as useless ones and removed from the model.



To make the top part of the model, the reference curve was created based on 'scale non-uniform factor' nodes. The NURBS created in the previous step was resized to have 40% of the original size using this 'scale non-uniform factor' node.
Lofts were used four times to form north and south parts of the bottom and top based on these reference NURBS.



The loft outcome looks like the below figure.


3. Facade Design

I chose to imitate the parametric facade of the USA Embassy in London, UK, since it might have some parametric change to make more indoor shade for Project 2.




Firstly, hexagon cells were made on the surface of the model. (only south part of the bottom model is shown in the figure to demonstrate the process clearly)




They were exploded to get all the segments from this hexagon. By using the length node and the equal node, the hexagon composed of six lines (= perfect shape of the hexagon) were remaining in the model and the others were removed.




The segments were sorted into three curves and each curve has a point that can be parametrically changed.




The points were then moved slightly to the south or north (the same direction that the surface is facing).




The lofts were created based on the curves and the points. 





4. Final Model






5. Physical model

Kangaroo was used to make a physical model. The stiffness was set to be 10. 






6. Curvature Analysis





7. Project Movie











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