Winston Kahn

As of March 31, 2011…

The goal of the project
-Have Galapagos find a Subdivided TriGrid system that that strikes an equal balance between the reduction of solar gain and providing unobstructed views given two facades.

What constitutes the fitness of the system?
-Fitness is measured by a single number that represents a mid-point between two tolerances, in this case that number is 13.

What are the genes of the system?
-There are four genes that control the system, which we've labeled "Tolerances". They are split into two groups corresponding to the two facades. One group takes the collective distance of a series of segments connecting to a stationary point on a circle that represents either "Best View" or the same for "Hot Spot". Depending upon whether or not that distance is smaller or larger than the tolerance factor, another group determines how much to subdivide the grid. In other words, as the collective distance approaches 13, so does the balance between one TriGrid expanding and the other contracting.

Explain the Parametric Model?
-We start with two rectangular surfaces that represent the two facades. Upon those are placed a TriGrid representing the largest acceptable triangle grid size. From there, the individual triangles are SubDivided and made into "Cells". We can then relate to them individually and that is where you would pick up with the statement above concerning the genes.

Here you go, sorry for the lame 'demo' tag. The .avi files were just too large and/or inconsistent in their capture to use:



As of March 24, 2011…
Preliminary answers to Final Project questions.

  • Define the goal of the project.

-Have Galapagos find a TriGrid system that that strikes a balance between the reduction of solar gain and providing unobstructed views.

  • What constitutes the fitness of the system?


  • What are the genes that control the system?

-Collective distance from the center of each triangle in the Trigrid to a common point (this point representing the spot with the best view). We will want to minimize the density of the grid in this area, thus maximize the collective distance of the lines from center to common point.
-Sun path creating a hot spot or region on the building. We want to maximize the density of the grid around/at this hot spot/region.

  • Explain the parametric model?

-Two Trigrids on two separate surfaces that meet on one edge. The surfaces are rectangles that have the same height but different widths.

  • VIDEO, embedded on the page

-Well that depends…

  • FILE, Linked on the page

-if I have a, well, I better have a file…

Here are some diagrams visualizing the two faces, the three levels of density with regard to the triangles, and what the grid might look like given a single variable, view or gain reduction.


As of March 10, 2011…

With regard to the final project, I have a final massing of the building in question and measured solar radiation through Project Vasari. I would like to use Grasshopper and Galapagos to determine the optimal density of equilateral triangles over each face of the building, given that the smallest triangle will provide the greatest resistance to solar gain (I will supply a minimum and maximum size for each triangle and the side length of each of these triangles will be an integer value).

I assume that it would be easier to break each mass down into a set of 2d rectangles, and then divide said surface into triangles/interconnected points.

Now if I were to take a face of this building that is of a uniform color, I would expect that G&G that would respond with a pattern of uniformly sized triangles. To add a level of complexity, without having to do too much work in G&G, I will give weight to a particular side, or area, or points located within each 2d rectangle. In other words, I'll attempt to set aside priority zones (read: 'weighted' zones) comprised of triangles that in one case might represent windows that would provide special view opportunities, or in another represent skylights, or landscape planters, etc.

If we run short on time, perhaps I will only attempt one or two adjacent surfaces. I'm guessing once I build one definition, it won't be too difficult to mix it up a bit. Below are the results of the solar analysis…


As of March 3, 2011…

Thus far, I have watched all of the "Basic" videos on Grasshopper from Digital Toolbox in preparation for today's class.

Looking ahead to the final, I'd like to work with Grasshopper and Galapagos to investigate the placement of a triangular frame around multiple surfaces of a building I've designed for my Arch 302 studio. In two other Arch 517 courses I have described this system as part of a double-skin facade and modeled/programmed it with Arduino as a kinetic window system. At this point, it would be useful to investigate the possible arrangements of a set of specific triangle sizes in order to promote ventilation, daylighting, etc. while meeting structural skin requirements. The following are diagrams of the aforementioned system to present…

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License