Dry Risers

Dry risers are a regulatory requirement for occupied buildings over 18m tall. They can also be found in Car Parks, Multilevel Basements as well as Hospital corridors where the Fire Services access could be limited.

Dry risers are used by the Fire Services to deliver water to multiple levels of a building, in an emergency. A Dry riser is vertical static pipe with outlet valves on each floor and inlets fitted at ground level. The current standard for the installation of Dry Riser Systems is BS9990: 2015.

British Standard BS9990: 2015 states that dry riser systems should be serviced once every six months with a dry riser annual test including a hydraulic pressure test using a fire service approved hose and pump for a minimum of 15 minutes once every 12 months.