Scordo Time QSN - Finish to start relationship

Submitted by rajmuthukumar on Wed, 11/20/2013 - 10:52

Hi All,

I am confused with the question below. SCordo is saying correct answer is A.But my answer is B. Checke the explanation below. They are saying "The landscaping work needs to start on completion of the office building". Is that mentioned anywhere in this qsn? Instead it need to start 15 days before the completion. I am not sure this is dicussed earlier. Please Help

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SCORDO Time QSM No 3

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After one year of construction, an office building is scheduled to be completed on 30th January. The landscaping work needs to start 15 days prior to completion of the building. Which of the following relationships most likely represents the relationship of the start of landscaping work to the completion of the office building?

a) Finish-to-start with a 15 day lead

b) Start-to-finish with a 15 day lead

c) Finish-to-start with a 15 day lag

d) Start-to-finish with a 15 day lag

 

Scordo's Explanation

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A - The landscaping work needs to start on completion of the office building, so it is a finish-to-start relationship. Since it needs to start 15 days before completion of the building, it requires a lead of 15 days. Hence the answer is finish-to-start with a 15 day lead. [PMBOK 5th edition, Page 156] [Project Time Management]

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ravindra_srinath

Wed, 11/20/2013 - 11:30

 It is correct. Imagine if there was no lead time specified. What logical relationship would you have put? Finish to start. Since there is a lead specified, it would be FS with 15 days lead. The question states that the landscape needs to start prior completion of the building and not necessarily that the landscape should finish by the time building construction also completes. ALso start to finish is rare..and not widely used compared to FS..