There have been lots of questions about safety and practicality aspects. The pictures here aren't of the final placement of the seat, because they wanted to put it in a bunch of architectural galleries first, so I have added another step addressing things you need to consider for long term placement of something like this.
This was a summer project run within the architecture department at the University of Brighton.
It was a group project, has gone over a year with no further development, so I can't imagine anyone will mind me showing the process here.
If you try this yourself or take inspiration from here please cite 'University of Brighton Architecture Department' as a source.
for all the people involved in this project
Design a chair / seat predominately made of concrete.
Consisted of several rounds finally producing a winning design
Was a design for modular blocks which could be stacked to create different seating arrangements.
The winner couldn't be there for the build so we developed the deign adding lugs onto the bricks to help them fit together more securely.
We then began to experiment with different textures to add to the blocks.
Initially took two weeks, then about a month coming in every 3 - 4 days to break the moulds, clean them and cast new blocks.
Read on for details