- For 2 or More Units: Creating Forms with Revit Conceptual Masses
- Images/screenshots showing two variations of the input parameters for:
- Flexing and testing one of the provided example building forms:
- Flexing and testing your new, original building form
- For 3 or More Units: Creating Forms with Dynamo or Grasshopper Geometry
- Images/screenshots showing two variations of the input parameters for your new building form created with Dynamo or grasshopper
- Points to Ponder:
For this part I used the provided mass generic models and then flexed on input using logic in dynamo. I had to play around with the constant inputs first in order to achieve the minimum gross floor area and to not exceed the base and height constraints.
For this part I created a rectangle and a rhombus mass base shape. I then used these shapes in the provided template to create the above tower. Both shape templates as well as the twisting tower family (based on the provided template) are provided in the acc folder. Following that, the same logic as in Part 1 was applied here were different heights were tested to see the increases in both GFA and GSA. The constant inputs were again chosen so the base and height constraints are maintained as well as the minimum GFA is achieved.
For Stage 2 the logic for creating the tower in Dynamo was developed. A polygon shape was used for the base, middle, and top profiles with adjustable number of sides. The profiles were then lofted, the logic for splitting the building into floors was developed, and the gross volume, gross surface area, and gross floor area was calculated. The story height, radius (base, middle, top), middle height, top height, and rotation (middle, top) are all adjustable in this file. The logic in this file was then converted to a custom node. Using the custom node, I kept most of the parameters constant (still adjustable with sliders if needed) and then created combinations of different middle rotation and top height variables. These are shown in the results table above. These were then used within the custom node function to calculate the GFA, GV, and GSA. The results are presented above. Additionally, I added some additional outputs to the custom node in order to be able to preview the building for some specific values (All files are in the folder). The constant inputs were again adjusted in order to maintain the base and height constraints and to achieve the minimum gross floor area.
The base diameter is 320ft (<328 ft) and the height is less than 755 ft.
The tested parameters are the middle rotation (30, 40, 50 degrees) and top height (492’, 576’, 660’, 744’).
- What’s the advantage of exporting the values to Excel?
- Better visualization of the results (especially if many cases)
- Further investigation of the results (computing other metrics)
- Which of these inputs tested has the biggest effect on creating a desirable building form?
- The height of the top profile has the biggest impact as it creates more floors and significantly increases the gross floor area.
- For shape metrics I only tested the middle rotation which already has a pretty large impact to the gross floor area as well as the gross surface area. For a 744 ft heigh building, increasing the middle rotation from 30 degrees to 40 degrees decreases the floor area by about 80000 sqft but on the other hand it also decreases the surface area by the same amount.