A custom elevator controller is planned to arrive on day 76 and is needed for installation on day 89. How much procurement float exists?
Correct Answer
A) 13 days
Procurement float is required date minus planned arrival date: 89 - 76 = 13 days. Other choices subtract unrelated dates or use unsupported cushions.
Why This Is the Correct Answer
Procurement float is required date minus planned arrival date: 89 - 76 = 13 days. Other choices subtract unrelated dates or use unsupported cushions.
Why the Other Options Are Wrong
Option B: 7 days
procurement float, choice a: 7 days is wrong because 7 days uses the wrong side of the schedule subtraction or omits one duration component.
Option C: 11 days
procurement float, choice b: 11 days uses the wrong side of the schedule subtraction or omits one duration component.
Option D: 21 days
procurement float, choice d: 21 days is wrong because 21 days uses the wrong side of the schedule subtraction or omits one duration component.
Memory Technique
Store procurement float with its last math move; nearby answers are usually unfinished versions of 13 days.
Reference Hint
Open Construction Jobsite Management, 5th Ed.; use the index entry or section for "Procurement float calculation" to confirm that Procurement float is required date minus planned arrival date: 89 - 76 = 13 days.
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