NCARB Test Question: Says stair tread max height

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2342135

January 20, 2025 14:56

One of the questions in NCARB practice test for PPD says the max tread riser height is 6", I thought it was 7"?

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  DC January 20, 2025 16:17

  In the context of that question, it will be 6".  Don't overthink it.  It could be a client request that stair risers can't go over 6" for some reason.

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  2342135 January 20, 2025 16:19

  

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  2342135 January 20, 2025 16:20

  It clearly says (max riser height) I chose 3 risers, because 21/7=3

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  DC January 20, 2025 16:24

  Because the max riser height is 6" in the context of the question, 21/6 = 3.5 which rounded up gets you 4 risers with a rise of less than 6".

  While IBC max is 7", that is irrelevant for the context of this question as it states that the max riser height is 6" (for whatever unknown reason).  They throw these in there to trip you up and get you to read and think about what you are being asked.  It was easily the first thing I learned when doing the practice tests prior to my exam blitz.

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  2342135 January 20, 2025 16:25

  ok thanks!

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