How do you do that? I've tried like all the keys.

If you play on a PC, try backspace, if you use anything else, go into options, then controls, check what secondary fire is, try that. If it doesn't work set secondary fire on to something you feel comfortable. if backspace doesn't work , then change it to something you feel comfortable with.

Oh ok, thanks. I'll try that.

How can you rotate your girders? I think you can do that.

I doubt that you can, but i just thought of something, anyway, i'll have to wait till the morning (Australian time) to try it.

Edit: what I tried didn't work.

Oh ok, thanks. I'll try that.

How can you rotate your girders? I think you can do that.
I think you can as well, but I can't for the life of me remember how.