Parametric Seating Project Final

For the parametric seating project, I used Marc Newson’s wooden chair for Cappellini as my parent:LAHR---CAPPELLINI-WOODEN-CHAIRI started by using the surface model I had made in Rhino and referencing it into Grasshopper (I later built two alternate surface models and also referenced them into Grasshopper).

SURFACE-LAHR

From there I made 4 blocks of code. 1 for the ribs, 1 for the base, and 2 for the horizontal supports:

code-for-ribs  code-for-base

code-for-supports

Below are images of my final Grasshopper model:

final-chair-model

While building my Grasshopper model, I kept the following 4 design drivers in mind and make sure those elements remained parametric:

Lahr_Height

surface

(this second GIF doesn’t work in preview, but click on the image above and it will open in a separate window and run correctly!)

LAHR-RIB-COUNT

LAHR-RIB-SHAPE

Using the above design drivers, I created 5 variations to the original parent:

chair-1-webchair-2-webchair-3chair4 chair-65

Cappellini Wooden Chair (Marc Newson by Merav Lahr)

For the parametric seating assignment, I choose to work with Marc Newson’s wooden chair for Cappellini.

cappellini wooden chair image slide

The chair is made of 3 parts: a curved, triangular base; 4 curved rectangular frames; and, 20 ribs, each a different size.

HOW ITS MADE

In Rhino, I drew the curved line for each piece of ribbing and swept a rectangle along it. For the frame, I used arcs and rectangles along with the sweep tool; for the base, arcs and triangles with the sweep tool. Below are 4 views of my model (clockwise from top left: front elevation, left elevation, plan view, perspective):

rhino model slide

For the second half the assignment, I will use Grasshopper to explore the following design drivers:

1. BACK HEIGHT

back height diagram

2. RIB WIDTH

rib width diagram

3. SEAT SHAPE

seat shape diagram