This is the contemporary city bench by Rocker Lange Architects.
I had a trouble creating same curves in Grasshopper, and then control them as I wanted.
It looks that Brep is not working but it is. I think it cuts the frames and that’s why. But it is working.
This is the sketch of mine, The idea how I wanted create in Grasshopper
Hare are some GIF animations
It’s my firs time doing it, I’m happy haw it looks, I wanted to make it different way but hope next time I’ll make that happen.
Parametrics 
Hi! I am Ivan! do you know that where can I find sheet of assignment for next week?
Hi Ivan, it’s on the blog. Go to Assignments. Everything is posted.
The videos are In DEMO. hare is a link https://int659.wordpress.com/category/demo/