Labor for structural-steel work is estimated per:

Labor for structural-steel work is estimated per:

• A. Day
• B. Hour
• C. Week
• D. Job

Answer: (B)

Labor for structural-steel work is estimated in man-hours because the total labor cost depends on how much time workers spend on the job, which varies with crew size, sequence of tasks, and productivity. Expressing labor in hours lets you multiply the number of hours by the appropriate wage rate and sum the time needed for all activities—erection, bolting, welding, rigging, etc.—to get an accurate total. It also accommodates changes in crew composition and pace of work. Estimating per day or per week would be less flexible and harder to scale for different crew sizes and task complexities, while estimating by the entire job lacks the granularity needed to foresee and control labor costs.

Labor for structural-steel work is estimated in man-hours because the total labor cost depends on how much time workers spend on the job, which varies with crew size, sequence of tasks, and productivity. Expressing labor in hours lets you multiply the number of hours by the appropriate wage rate and sum the time needed for all activities—erection, bolting, welding, rigging, etc.—to get an accurate total. It also accommodates changes in crew composition and pace of work. Estimating per day or per week would be less flexible and harder to scale for different crew sizes and task complexities, while estimating by the entire job lacks the granularity needed to foresee and control labor costs.