ALL meanings of dry riser
dry ris·er
D d - noun dry riser A main vertical pipe, usually kept empty, intended to distribute water to multiple levels of a building in the event of a fire. 0
- noun dry riser a vertical pipe, not containing water, having connections on different floors of a building for a fireman's hose to be attached. A fire tender can be connected at the lowest level to make water rise under pressure within the pipe 0