Practice Exam Question

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Nguyen Nguyen

April 30, 2023 16:28

This is one of the questions from case study. 

Can someone please explain how 15,780 square feet x 15% = 18,147 square feet?

The right calculation is 15,780 square feet x 115% = 18,147 square feet.

If that is the case, where is this "115%" from? 

Thank you in advance.

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  Valerie Galchenko May 01, 2023 13:06

  Grossing factor is the ratio: Grossing Factor = Gross Floor Area / Net Floor Area

  Gross floor area / Net floor area = 1.15 (where 1.00 = 100 % and 0.15= 15%)

  x sf / 15,780 sf = 1.15 

  x = 15,780 sf x 1.15 = 18,147 sf

   

  18,147 / 15,780 = 1.15 

   

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  Rebekka O'Melia May 06, 2023 19:49

  Agreed, that should say 15, 780sf + 15% = 18,147 sf.  The 15% extra is correct.  115% would more than double the square footage.

  Your answer of 40,000 sf doesn't make any sense if the building is 25,000 sf and they are asking how much space is left over after they subtract what is needed for the conference center, gym, locker rm, restroom, kitchen & teen room.  I think you misunderstood the question.  Right?

  Hope this helps!

  Rebekka O'Melia, R.A., NCARB, B. Arch, M. Ed, NOMA, Step UP ARE 5.0 Courses

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