Creative Speculation
In reply to the discussion: This message was self-deleted by its author [View all]William Seger
(11,294 posts)None of the WTC buildings really came "straight down," but getting a building to fall as straight down as possible isn't complicated: You just need to remove all the supports at the same time. Since that's not what happened in any WTC building -- all of the collapses were asymmetric to some extent -- the debris is widely scattered. Getting most of a building to fall into a specified place (whether it's "into it's own footprint" or to one particular side) can be very complicated (and also limited by physics), so trying to do it without an expert is not advised. For example, WTC 7 fell to the north and damaged more buildings, which would have been avoided by falling in on itself or falling to the south. Best not leave that sort of thing to chance.
Furthermore, it seems you'd need an expert anyway to inform you which buildings couldn't be brought down by your proposed demolition method.