A project requires 45 cubic yards of concrete for a foundation pour. If the concrete truck capacity is 8 cubic yards, how many truck loads will be needed?
Correct Answer
B) 6 loads
45 cubic yards ÷ 8 cubic yards per truck = 5.625 loads. Since you cannot order a partial truck load, you must round up to 6 full truck loads to meet the requirement.
Why This Is the Correct Answer
When dividing 45 cubic yards by 8 cubic yards per truck, you get 5.625 loads. Since concrete trucks deliver full loads only and you cannot order a fraction of a truck, you must round up to the next whole number. This ensures you have enough concrete to complete the pour, as 5 trucks would only provide 40 cubic yards, leaving you 5 cubic yards short.
Why the Other Options Are Wrong
Option A: 5 loads
5 loads would only provide 40 cubic yards (5 × 8 = 40), which is 5 cubic yards short of the required 45 cubic yards needed for the foundation pour.
Option C: 7 loads
7 loads would provide 56 cubic yards (7 × 8 = 56), which is 11 cubic yards more than needed, resulting in unnecessary waste and additional cost.
Option D: 8 loads
8 loads would provide 64 cubic yards (8 × 8 = 64), which is 19 cubic yards more than needed, resulting in significant waste and excessive cost.
Memory Technique
Remember 'ROUND UP OR SHUT DOWN' - if you don't order enough concrete for a continuous pour, the entire job stops and the concrete already placed may be ruined.
Reference Hint
Florida Building Code Chapter 19 - Concrete, or construction estimating references covering material quantity calculations and concrete delivery logistics
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