Scheduling and Time Management
Domain 4 tests scheduling logic for coating projects: work breakdown, sequence, durations, dependencies, float, milestones, lookahead planning, and progress updates. The exam emphasizes time as a resource affected by cure, access, and occupancy.
Core rules
- Build a work breakdown by area, substrate, and coating step: prep, prime, finish, cure, punch, and turnover.
- Use the critical path method. The critical path is the longest duration path and has zero total float; delay there delays completion.
- Include lags for drying, cure, moisture testing, and owner approvals. A lag is waiting time, not a work task.
- Distinguish calendar days from workdays and weather days. Update the schedule with actual progress; do not leave a baseline as the current plan.
- Use a two- or three-week lookahead to coordinate access, materials, and inspections.
Worked example
A room sequence is prep 3 days, prime 2 days, finish 2 days, cure lag 1 day, and punch 1 day. The path is 3 + 2 + 2 + 1 + 1 = 9 days. If the owner adds a two-day mockup approval after prep, the path becomes 11 days and the mockup lag is critical. If another crew can prep a second room during prime, that work may have float, but the finishing crew still controls turnover. The reasoning: identify the longest path, then test any change against that path.
Traps
- Scheduling paint immediately after prep with no cure or moisture check.
- Treating total float as free time for every trade.
- Mixing workdays and calendar days.
- Failing to update the schedule after delays.