I chose the Twisting Rounded Triangular Mass with Constant Taper for my building form. I chose to have a floor to floor height of 15ft in my building and divided the mass into floors accordingly. I set my project location as per the brief. I modified the family to have the following parameter values. I chose a Base Radius of 140ft (which was kept constant throughout) to ensure that the plan limits are within the constraints of 300ft x 450ft. To create a tapering effect the mid radius and top radius were made to be 0.75 and 0.5 times the base radius respectively.
First, I chose to vary the height of the building from 500ft to 750ft in increments of 50ft and simulate 6 test cases. I selected the building form and made the input parameter (to be flexed) as “Top Height”. The parameter names being reported were Gross Floor Area, Gross Surface Area and Gross Volume.
I varied the height from 500ft to 750ft in increments of 50ft.
This was followed by using a custom node to evaluate the single input value that is being flexed and how it is affecting the reported parameters.
Shown below is the custom node logic.
Overall custom node (BuildingForm.EvaluateSingleInput) logic:
As my final steps I used List.Map to input the list of height values and the functions (metrics) to be evaluated for each of the height values. I exported the mapped list data into excel to generate the following table. Shown below is the overall Dynamo logic used for this submission.
All tested values of Tower Height generate values of Gross Floor Area under 1,500,000 SF. The tower heights between 650ft and 750ft are the most optimal since they generate Gross Floor Areas which are in the range of 1,200,000 - 1,500,000 SF.
Shown above are the isometric view, side elevation and top view of the building form at the end of the iteration process (i.e., Top Height = 750ft).