PDD practice exam Q: Case study 1, stair treads

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Christopher Hanson

December 31, 2022 02:15

I am at a loss for how to get to the calculations shown in this question's explanation. I have pasted the question's text and the relevant stair section here (the section is in two images since I couldn't fit it all on my screen at a readable scale).

Where do the two starting measurements in the Explanation come from? I am referring to the 10'-1" and the 4'-7" values. I don't see those values in any dimensions on the stair section. At the basement level I see a 10'-3 1/2" vertical dimension and no dimension with a value near 4'-7". Are there calculations I must do in order to arrive at the measurements given in the Explanation? Are those measurements given in another drawing or other documents in this case study? I would like to know the source of these numbers.

Question text:

Stair section top:

Stair section bottom:

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  Gang Chen January 01, 2023 01:03

  Horizontal dimensions are typically shown on floor plans on a set of CD.

  Gang Chen, Author, AIA, LEED AP BD+C (GreenExamEducation.com)

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  NCARB January 06, 2023 15:13

  Hello Christopher,

  The dimensions to be referenced are in the Case Study Exhibit, under the construction documents plan sheet A-03.

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