More steel beams are being mounted on top of the main floor. This will help hold up the upper floor, provide some wind bracing and help reinforce all those big empty spaces that we have. The downside of all this steel is that it will make it hard to run AC ducts.
They are renting a small crane that arrives on the back of a truck. The crane has tracks on it so that it can get down the steep part of the hill. Once the steel is bolted in place, they will weld it all together.