@Das Ponto -- don't know about the Burj, but PCL has a reputation for quick erections. Did you notice how quickly the Edmonton tower caught up to… never mind that was a steel job. I think they supply all of their workers with Viagra and pin-up girls.
@Das Ponto They look fun to use, though I saw a worker bail one when he went too far over a seam once. It was quite a sight to witness from ~30 floors above him. Won't say what site or who was working on it, but was surprised given their reputation for safety. He seemed to be ok, at least, but it could have been a lot worse if it happened at a drop.