What is a dry riser?
A dry riser, known in some places as a stand, is empty vertical water within a multi -storey structure. Some are connected on each floor and network pipes that will distribute water to local sprinklers and fiery connections, and others have a connection for Firehoses. Dry risers have an external ground connection at the ground level accessible by fire staff to create a connection to charge systems with water. Usually installed inside the fire staircases, dry risers are required of all building regulations in the US and mostly building regulations around the world for height structures. In those jurisdictions, when dry risers are not required according to local building regulations, the installation costs are often quickly obtained by premium savings.
The water can be supplied with a dry riser to the fire site faster than firefighters that pull the hoses up the stairs, especially in the height structure. Most dry climb systems already have a connected length of fire hosesConnection on each floor that saves precious time in case of real fire. If this is the case, some firefighters can use these hoses to start fighting the fire, while their colleagues pull out other hoses to connect to a dry riser connection.
Many structures today have automatic spraying systems that are constantly maintained with water supply under pressure. These systems are generally activated only when the temperature reaches a point over what people consider surviving when the ambient temperature causes liquid cooking in a fragile glass bulb and breaks the glass. Automatic sprinklers are indispensable in terms of rescue of real estate, but they are not so effective in saving lives because they are stationary and cannot follow fire or clean the escape route.
England was the place of the first installation of a dry riser in 1812. It consisted of Avelá reservoir of water withbound with the system of perforated tubes in the theater. When the fire was discovered, the valve was opened and the system was charged with water that escaped from perforation and fire. Dry risers have quickly become popular in industrial applications such as factories and warehouses in England and Europe, and quickly spread to the textile mills of New England.
dry risers were originally used as manually activated spraying systems, but when they were replaced by automatic systems, their main purpose was changed. In modern times, they are widely required at altitudes, even those that have automatic spraying systems, as they supply high water under pressure directly for fire staff. It is this ability to supply water in large quantities to any particular point that allows firefighters to quickly bring fires and save lives, which is the ability beyond automatic spraying systems.