CEP Labor & Equipment Productivity Flashcards

What is 'equipment utilization rate' in construction estimating?

Answer: The percentage of available scheduled time that equipment is actively operating productively

Equipment utilization rate measures the fraction of scheduled time a machine is producing work, directly affecting unit cost and schedule performance.

How is equipment 'ownership cost' typically calculated in estimating?

Answer: By summing depreciation, interest on investment, insurance, taxes, and storage over the ownership period

Ownership cost encompasses depreciation, financing interest, insurance premiums, property taxes, and storage—costs that accrue regardless of whether the machine is working.

What is the 'operating cost' of construction equipment?

Answer: Variable costs incurred only when equipment is running, including fuel, lubricants, tires, and routine maintenance

Operating costs are variable expenses directly tied to machine use—fuel, oil, lubricants, routine maintenance, and wear-part replacements like tires and cutting edges.

What does the 'equipment standby rate' represent in construction contracts?

Answer: A reduced rate applied when equipment is on site and available but not actively producing work

The standby rate—typically about 50% of the full operating rate—is charged when equipment is on site and available for use but not actively working.

Which factor does NOT significantly affect construction equipment productivity?

Answer: The cosmetic color or paint scheme of the equipment

Equipment productivity is driven by material conditions, operator skill, and site logistics—cosmetic factors like paint color have zero effect on machine output.

What is 'cycle time' for earthmoving equipment?

Answer: The total elapsed time for one complete load-haul-dump-return sequence

Earthmoving cycle time is the total time for one complete operational cycle: loading at the cut, hauling to the dump, dumping the load, and returning empty for the next cycle.