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The congested site only has room for 3 cranes to operate concurrently. Only 1.75 cubic yard ICY] or1.34 cubic meter [CM] concrete buckets are available. Each crane can perform up to 35 lifts per day. Assuming a total of 30 lifts per crane pet day. what is the maximum volume of concrete that could be placed using 3 small tower cranes over a 5-day period?
Correct Answer: D
Each crane can perform 30 lifts per day with a 1.75 cubic yard bucket. For 3 cranes over 5 days: Concrete volume per day=3 cranes×30 lifts/crane/day×1.75 CY/lift.\text{Concrete volume per day} = 3 \text{ cranes} \times 30 \text{ lifts/crane/day} \times 1.75 \text{ CY/lift}.Concrete volume per day=3 cranes×30 lifts /crane/day×1.75 CY/lift. Daily volume=157.5 CY/day.\text{Daily volume} = 157.5 \text{ CY/day}. Daily volume=157.5 CY/day. Over 5 days: Total volume=157.5×5=306 CY.\text{Total volume} = 157.5 \times 5 = 306 \text{ CY}.Total volume=157.5×5=306 CY. References: PSP Study Guide, Section 1.3.7 - Resource Calculations, demonstrates how crane capacity and lift productivity are incorporated into project planning.