Often the welded steel structural frames we build have little resemblance to the final shape of the finished feature. It just has to fit inside the final envelope. The structure doesn't have to be pretty - just extremely strong and rigid. The concrete skins that form the pretty part will tolerate no movement. If we were building in place it would be a relatively simple matter. Because we are building it in our shop, moving it a number of times, lifting it, transporting it and lifting it a final time the frame needs to handle a lot of torsional stress. This means we often overbuild just to be well on the safe side. Our current project qualifies in every way.