pic: 4301 Practice Pyramid

We finished building our pyramid today, and we almost have a robot ready to practice on it with.

are those metal poles or pvc?

Seems like black iron pipe to me. As well, are there any plans on adding ratchet straps to the other corners?

Not yet, but if it proves to be unstable, we might need to.

EDIT: Yes, it is black ion pipe.

I still like ours better.