The early building stage of this distribution centre nicely shows how it's assembled. It has a framework made from lightweight beams resembling the construction of an airship, but this is probably all steel, not aluminum. They are bolted to a concrete foundation and tie-rods are added to make it strong.
The size of the foundation indicates a building with a massive volume. The beams for the roof (right) are slightly bent to support weight and perhaps to improve drainage of water. From the position of two vertical beams on the floor (left) it seems the roof-beam is mounted first before hoisting the complete assembly into position.
A photo from the other side shows the square front-end with strategically placed rods and beams. Adding diagonals makes it incredibly strong.
A minimum of material is used to get a big volume. Steel cables are hooked into the frame (right) to temporary strengthen the construction before it is complete.
This is about the same view as in the previous photo but now with a part of the font-end. A construction like this has a very simple design but yet it has strange irregularities. Did they improvise on site?
The size of the foundation indicates a building with a massive volume. The beams for the roof (right) are slightly bent to support weight and perhaps to improve drainage of water. From the position of two vertical beams on the floor (left) it seems the roof-beam is mounted first before hoisting the complete assembly into position. 
