Problem to be solved: to provide a sprinkler system supplied from a ground water supply pipe. Solution: the upper water pipe C2 is screwed into the lower water pipe C1 branched upward from the underground water supply pipe D, the riser tube a is connected to the upper end of the upper ...
firefighting facilities fail and fire breaks out in Zone I. For large public spaces, the overall spread speed of fire is fast, which requires the use of the fire control system in time to control the spread of fire. Fortunately, the space of evacuation time is relatively sufficient; it ...