2 Units:
For my tower, I began with the twisting simple triangle parametric tower mass, added floors at every 10’, set the project location to San Francisco and adjusted the properties. I decided to focus on the rotation of the top triangle as the instance parameter being changed and related the middle triangle’s rotation to the top triangle’s rotation. The base rotation was kept constant so the level of twist would increase with changing parameters. I also made the top triangle and base triangle the same size but made the middle triangle half the size of an hourglass effect. I maintained the height of the structure at 750’ per the brief but investigated how the twists would affect the surface area and floor area.
Affect of changing top rotation:
To change the top rotation parametrically, I utilized Dynamo logic.
I began with selecting the Revit mass and creating code blocks with the labels of the input parameter I wanted to change and the output parameter I wanted to export.
Then I made a code block with a list of angles to try where I tested angles between -180 degrees to 180 degrees going every 15 degrees. I used the BuildingForm.EvaluateSingleInput Custom Node in order to change the parameter of the mass and export the floor and surface area from Revit.
In order to export the data to excel, the outputs were mapped into lists.
Lastly, the inputs and the outputs were exported to Excel.
The results for floor area and surface area for each rotation are shown below. The lowest surface area achieved while being within the floor area bounds of 1.2-1.5 million was for an angle of 165 degrees which resulted in a floor area of 1,205,385 SF and a gross surface area of 559,699 SF.
