Scheduling and Assigning Resources for Installation
Durations from quantities, not wishes
Scheduling on the CIM exam tests whether you can build a logical, resource-based plan. Durations should come from quantities and production rates: duration equals quantity divided by crew size times the rate per installer-day. Include prep, moisture mitigation and cure, acclimation, material delivery, inspections, punch, and cleaning. Build a critical path with predecessor logic. The critical path has zero float; protect it. Use float to absorb minor delays, but do not consume all float on one trade. Resource leveling avoids crowding small areas with too many installers, which reduces productivity and creates damage.
Assigning crews and materials
Assign by skill: resilient, carpet, tile, moisture mitigation, welding, and trim. Maintain crew continuity and supervision. Confirm certified or manufacturer-trained installers where the specification requires them. Tie material releases to the schedule; a perfect crew plan fails if material arrives late. Use a two- or three-week look-ahead to confirm access, power, HVAC, and storage.
Worked example
A 12,000 sf carpet tile job at 500 sf per installer-day requires 24 installer-days. With four installers, installation is 6 days. The logic is prep 5 days, mitigation 3 days after prep, installation 6 days after mitigation, and punch 2 days: 5 + 3 + 6 + 2 = 16 days. Material lead time is 12 days from award. If award is day 0, delivery lands on day 12, but installation is scheduled to start on day 8. The schedule is not executable. Options: expedite delivery, resequence prep and mitigation to overlap where possible, or delay installation. If installation cannot start until day 12, the new duration is 12 + 6 + 2 = 20 days unless mitigation finishes earlier. The critical path now includes procurement, not just field work.
Traps that cost marks
- Entering target dates instead of calculated durations.
- Ignoring material lead time and submittal approval.
- Overloading a small area with crews and losing productivity.
- Assuming overtime produces proportional output.
- Leaving no float for inspections or cure.
- Not updating the schedule when access changes.