Yup, but that's a safety issue, this really isn't. It's a common sense/ respect issue. The welder has to lay down in that all day, so stepping on it is a huge no no (welders are gods on pipeline). Some are such assholes that the helper, who also has to get down there, isn't allowed to lay on it. Since I'm detailing this thread again with random welding stuff, here's probably the coolest video on YouTube. Good old boy putting a bead in. This is how it's done, someday I might be that smooth, not yet tho.