The const company I work for set a lot of tanks and silos. One thing to take into consideration is that most of these are unloaded with cranes and set in their final home not in the parking lot until they are ready for them. That can add a lot of extra time for the trucker siting waiting for the crane to set up and some times they do not want to fit on the first try. It seems like we always do 2 at a time so the second trucker gets screwed. Just something to consider time wise. Someday I will post pics of the old silos I get to haul out for scrap.