Why hollow metal shaft doors are critical to fireman’s lift lobbies and how ratings interact with pressurisation.
The role of the firefighting shaft
A firefighting shaft bundles a protected stair, lobby and fireman’s lift so responders can move vertically while occupants evacuate.
Doors on this shaft are not decorative hardware - they are part of the pressure and integrity strategy.
Specification tips
Confirm leaf thickness, latching, closer force and any access control interfaces early. Dimensional accuracy matters when lobbies are tightly coordinated with MEP.
Written by BÖLDT Technical Team
