Dry risers are an essential part of any high-rise building's fire safety system. Usually found in properties over 18m tall, they consist of a network of pipes that allow for water to be delivered to upper floors in the event of a fire. Dry risers are usually positioned in a staircase, and feature an inlet at ground level that can be used by emergency services to pump water up the building. There is also an outlet at each landing on the upper floors, which the fire brigade can use to attach a firefighting hose. Dry risers play an important role in keeping people safe in high-rise buildings, and should be regularly inspected and maintained to ensure they are in good working order.