We decided that we did not think that it was possible to make a strong, economical chair out of cardboard that had legs. We knew that triangular prisms hold up well in construction, so we used that. We based the height of our chair on the height of a desk chair. This information was attained by conducting a survey of the class.
Our chair was made almost entirely out of cardboard. Other than that, we just used some glue for the joints.
We used 16.2 square feet of cardboard. It cost $2 per square foot, so our chair cost $32.40.
The base is a triangular prism that had sides that were 15” each. It also had another triangular prism inside of it that had sides of 7.5” each. The whole base was 17” tall.
Our seat was made out of two pieces of 13”x15” cardboard. It was rounded at the front for aesthetic purposes and also to provide room for your legs. There were also some supports under the seat to make the seat on a 10⁰ incline.
The back of our chair was one piece of 19”x15” cardboard. It was shaped purely for aesthetics. Two sets of four long, skinny pieces connect the back to the base of chair and provide all of the support. The extra room between the chair back and the supports allow for variable reclination.
Something that we could have avoided was the supports underneath the seat. By initially angling our base to fit the requirements, we could have possibly made a stronger seat and a better looking chair.