Ye Zheng

Link to Design Journal
Journal Entry For
Module 6 - Evaluate Your Alternatives
Created By
Ye (Kalina)
Related to 120C/220C Students - Spring 2022 (1) (Related to Design Journal Entries | Winter 2022 (Linked Student))

Overall set up:

Our building is circulated with 4 other towers in the SF city which may cast shading on our tower. Another historical and famous target building is located on the North of our building which we want to maximize our direct view towards it.


Original building form:

Top Height = 720 ft, base rotation = 15°


Recommended building form:

Top Height = 660 ft, base rotation = 45°


Node Logic of Custome evaluator nodes:

  1. Evaluate cost by floor area

  1. Evaluate directness of a view towards another building

  1. Evaluate solar insolation (set up different from Glenn’s)

Summary table:


Brief description:

The recommended building design is selected based on some given constraints and matrix we want to optimize. Top height and base rotation serve as two input parameters to vary building dimensions with 4 values for each paramter and a total of 16 scenarios. The base radius is set to be 190’ so that the site development limits are not exceed.


  1. floor area between 1,200,000 sf and 1,500,000 sf
  2. site development limits – up to 300’ x 450’ in plan view
  3. maximum building height of 750’

The 12 building designs with height and floor area fall into the constraints are highlighted in light green colour in the table above. Based on the result, a design of 660ft height and 45° base rotation is selected. This design has the highest value of direct view to our target building (shown as darkest green in the view directness column), and its cost is one of the cheapest base on the total floor area (light yellow in the cost column). It also has a fair amount of solar insolation given its height (light green in the solar insolation column). Thus, this design is considered to be most cost effective and desirable among the 16 scenarios.