Fire danger in multi-light room (atrium) shopping and entertainment centers

In the Russian Federation is a large-scale construction of shopping and entertainment centers, in particular with atriums. Due to large retail areas and the fire load there is a problem of fire hazard and the spread of dangerous fire factors throughout the building. Since the atrium is a kind of the core of a shopping and entertainment center that connects all the trade premises, the issue of protection is an actual problem in our time.