A picture of the trusses above the fifth floor walls. Here we can see the horizontal bottom chords, nail plates are used for strong connections and also can be used for truss repairs, they are more economical and effficient then a series of nails. Metal framing is used a safety measure in case of a fire. And the very top we can see the sheathing of the roof

This picture shows the lateral supports of the truss, the webbing, top and bottom chords, held together y the nailing plates
In this hallway we can see the two walls of studs, the beam running between the walls and the ceiling that is being installed
An example of fire caulking, it creates a seal that is a barrier against fire, smoke, toxic fumes and moisture.