WEEK #5

My goal was to find a way to recreate this super useful structure pattern. This pattern is the most rigid sliced structure of a volume. Mike Sheldrake, one of the first to work on this pattern with a scientific approach gave it the name of Quarter Isogrid. There very few documentation about this but he tried to explain this structure on his website: https://sheldrake.net/quarter_isogrid/. 

To succeed I combined different knowledge and tutorial about Grasshopper and Rhino from the internet.

First step, THE GRID : recreate this grid made of 3 intersecting sets of lines. 1 vertical, 1 with angle of 60°, 1 symmetry of the previous one. The main rule is : There must not be more than 2 lines intersecting on the same point.

I asked help on a Grasshopper Facebook group and a guy gently gave me the definition of this grid. 

Second step, THE RIBS : I had to connect this grid to another tutorial which helps me make ribs out of planes intersecting a Volume. 

Thrid step, THE NOTCHES : A guy on the same Facebook group help me find a Rhinoscript that makes notches where ribs intersect. Wonderful it works like a charm. Now, I have to figure out the working size of the notches when the ribs are not perpendicular. (Therefore it's not the thickness of the material).

I tried this script on 2 different shape, somehow on one of them it creates the notches upside down a certain point and goes back to normal afterwards...
Fortunately, I could select the problematic ribs and do it again with the inverting command of the script. 

Next I have to try to build a structure !!