Layout should include
- determining the number of ceiling joists needed for the job
- laying out ceiling joists on the top plate
- marking openings according to the blueprint.
IRC: Chapter 8 defines ceiling joist material, allowed spans, and spacing live and dead loads, along with attachment to wall plates.
Process/Skill Questions:
- Where are the details for ceiling framing on plans?
- What are the typical layout dimensions for ceiling members?