Sebastian Madrigal - Module 3

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Journal Entry For
Module 3 - Give Me Shelter

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  • Your Name as the Card title
  • The link to your Module 3 folder in our Autodesk Construction Cloud project

Please also type the first few letters of your first name into the Link to Student field, then hover over your name from the list of matching records and click the blue plus sign to link this entry to your Design Journal.

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  • A screenshot of your model geometry
  • A few sentences describing your modeling approach
  • A brief description of your design outlining the parameters that can be used to flex and dynamically change your structure

My building model was inspired by the Atyrau pedestrian bridge in Kazakhstan.


My initial focus for designing this bridge was to ensure that there would be two separate sine wave borders defining the base and the top of the bridge. There are various parameters that can impact either both or one end of the bridge at a time (such as frequencies, amplitudes, translation, length, defining points, panel size, ). Although I would’ve liked to incorporate the diamond netting visible on the side of the bridge, I decided that it would be more convenient to prepare a u-v grid that appears mostly like a square grid from the side and above.


I first focused on creating two adjustable sets of sin wave lines (the bridge bases and tops), then I defined another diagonal member to connect the end and start points. I faced a challenge with the offset of these lines since each diagonal line had both endpoints overlapping with the sine waves, so I defined it to have n + 2 points where the extra two were hidden from the list during creation and transposition. The lines that connect these three members were set to be cylindrical with three adjustable radii at the end and middle of the cylinder. (See the gray steel cylinders in the image.)


I then used lofting to create a surface and attached a uv-grid to run parallel and perpendicular to the sin spine. The panels were created using a Quads from Rectangular Grid node, and these were made to have adjustable thicknesses. Finally, I applied a Take EveryNthItem operation to the lists of panels so that the odd and even columns could be colored differently.


On a final note, I would have liked to set up the panels to be on the outside of the steel columns, but couldn’t figure this out since a simple object translation could not work simultaneously in the x and y directions. (If anybody has any recommendations, they would be greatly appreciated!)