When you hand off a set of construction documents, the hardware schedule is the document that tells everyone exactly what goes on every door in the building. It's a matrix linking each door opening to a hardware group, and each hardware group to specific products, finishes, and code-compliance notes.

The schedule lists every opening by number, describes it (single or double leaf, hand, size, door and frame material, fire rating, sound rating), and assigns it a hardware set number. That set number points to a hardware group that spells out every item: the lockset type and function, the hinge type and quantity, the closer, any exit device, cylinders, keying symbols, and BHMA finish designations. If a component is fire-rated, the schedule must show its UL mark.

Think of hardware groups as templates. Instead of specifying everything per door, you define maybe a dozen groups (office door, corridor door, stairwell door, exterior entry, fire-rated pair, and so on) and then assign openings to groups. This keeps the document consistent, makes coordination with door fabricators straightforward, and makes QC reviews faster.

The stakes for getting this right are real. Hardware on fire-rated doors must be listed to UL and must be compatible with the door's label. Exit devices must be specified where NFPA 101 requires them, not everywhere. Hinges must match door weight, frequency of use, and whether the assembly is fire-rated. ADA lever handles are mandatory on accessible routes. Electrified hardware has to coordinate with the electrical engineer's drawings and the access control system.

At the PDD level, your job is not choosing which product family looks nice. It's making sure your documentation captures the correct hardware selections, assigns them accurately to openings, flags fire-rating and accessibility compliance, and coordinates with the specifications. If the schedule says one thing and the specs say another, a contractor will build something, and it probably won't be what you intended.