in my engineering physics class we had to build chairs out of cardboard... so we took ours up to the weight room and started piling on weights...
we ended up with 720 pounds on a 5 pound chair, before the weights teacher made us quit because he didnt want it to fall and have peoples feet get fucked.
the chair wasnt bending at all, even a little.
we have pics on my friend ryans phone, but i dont have a phone to post them
/claim