3nex

Right. Well I get rocks, and sand of course. That other stuff, I guess it depends on what you do with it... But what about these two for example: http://imgur.com/a/bC3Og ? These seem kind of "counter-intuitive". The blue pipe would look easy to knock down when you ram it, unless it's filled with cement all the way from top to bottom? The yellow one even worse, either easy to knock down or weak enough to fall through...

Hello everyone, I am not a trial rider at all, I only enjoy watching the sport. I just have a short question I've been wondering about. Is there a video on Youtube for example, that shows how a trial section is being built? Because sometimes watching those constructions, it makes me wonder how the whole thing stays upright so sturdy. Sometimes it's obvious if it's a cement block or something, but for some very tall and relatively thin constructions, it seems like it should be fairly easy to knock down when "slamming into it" with a bike. So I'm wondering if there is a video where someone shows the process of building it, maybe talking about it as well. Thanks in advance