Door Hardware
CSI Division 08, Openings
The hinges, locksets, closers, panic hardware, and other functional components installed on a door, specified in detail through a hardware schedule that coordinates each door's specific function (fire-rated, accessible, secured, exit-required) with the correct hardware for that function.
Why it matters
Door hardware selection is tightly governed by both fire and accessibility code: a fire-rated door needs a self-closing device and often specific hardware to maintain its rating, and an accessible route requires hardware operable without tight grasping or twisting, so a hardware substitution that looks equivalent can actually violate either requirement.
On a real project
A door on an accessible route is specified with a lever handle rather than a round doorknob, since code requires hardware on an accessible route to be operable with a closed fist, something a round knob doesn't allow.
Who this matters most to
A Carpenter installs hardware to the door manufacturer's prep and the project's hardware schedule. A Facilities Manager inherits the building's hardware long after construction and relies on the original hardware schedule to source matching replacement parts years later.
Where this goes wrong
A contractor substitutes a similar-looking lockset for the one specified on a fire-rated door, without confirming the substitute is actually listed for use on that fire rating. The mismatch isn't caught until a fire marshal's inspection, and the non-compliant hardware has to be replaced with a properly listed unit before the door assembly can be approved.