Partitions and ceilings are different systems
Gypsum work covers two main systems. Partitions are built from floor and ceiling tracks with studs, one or more board layers each side, and often insulation in the cavity. Suspended ceilings hang from the slab on hangers and a grid, boarded or fitted with tiles. Each system has its own components and spacing rules from the manufacturer. State whether your scope is ceilings, partitions or both, and name the system.
