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Module 27110-06 Basic Stair Lay-out
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Module 27110-06 Basic Stair Lay-out
1. The stairway shown in the figure above is classified as a _____ stairway (Page 10.3, Section
2.0.0 Figure 6).
Answer
Wide-U stairway
Wall
Wa llWa ll
Wa ll
Wa ll
UP
2. The stairway shown in the figure above is classified as a _____ stairway (Page 10.3, Section
2.0.0 Figure 7).
Answer
Double-L stairway
UP
Wall
Wa ll
Wa ll Wa ll
3. The stairway shown in the figure above is classified as a _____ stairway (Page 10.3, Section
2.0.0 Figure 8).
Answer
Narrow-u stairway
UP
Wall Wa ll
Wa ll
Wa ll
4. What types of stairs are included in the geometrical stairs category (Page 10.4, Section
2.0.0)?
Answer
Circular, elliptical, spiral
5. The stair parts marked A in the picture are _____ (Page 10.5, Section 3.0.0 Figure 10).
Answer
Tread
A
6. The stair parts marked B in the picture are _____ (Page 10.5, Section 3.0.0 Figure 10).
Answer
Riser
B
7. The stair parts marked C in the picture are _____ (Page 10.5, Section 3.0.0 Figure 10).
Answer
Stringer
C
8. What is a gooseneck (Page 10.6, Section 3.0.0)?
Answer
Curved part of a handrail
9. What parts of an interior stairway make up a balustrade (Page 10.6, Section 3.0.0)?
Answer
Baluster (spindle), handrail, newel post(s)
10. The stair part marked A in the picture is called the… (Page 10.7, Section 3.0.0 Figure 12).
Answer
Nosing
A
11. The stair part marked B in the picture is called the...(Page 10.7, Section 3.0.0 Figure 12).
Answer
Skirtboard
B
12. The stair part marked C in the picture is called the… (Page 10.7, Section 3.0.0 Figure 12).
Answer
Baluster
C
13. Where is a skirtboard found (Page 10.8, Section 3.0.0)
Answer
It is also known as a finished stringer and is found against the wall side of a stairway.
14. What is the minimum standard headroom for a stairway used in a public (commercial) building?
(Page 10.8, Section 4.1.0)
Answer
6'-8"
15. What is the standard width range for a stair width (Page 10.8, Section 4.4.0)?
Answer
36”- 44”
16. If a set of stairs does not have a landing, what should its maximum rise be (Page 10.11, Section
5.1.1 Note)?
Answer
12’
17. How is the tread run (unit run) measured (Page 10.12, Section 5.1.2)?
Answer
Measured from the face of one riser to the face of the next riser (nosing not included)
18. How many risers and what will their individual height be for a stair with a total rise of 8'-2“ (Page
10.13, Section 5.1.2)?
Answer
8’-2 = 98”
98”/ 7” (target riser height) = 14 risers
Divide the # of risers back into the riser height. This is especially true if previous answer did not come out even.
98” / 14 = 7” riser height
19. How many treads will a stair with a total rise of 8'-2" and a total run of 9'-9",using the stairwell header used as the last riser have (Page 10.13,
Section 5.1.2)?
Answer
8’-2 = 98”98”/ 7” (ideal riser height) = 14 risersThere will be one less tread than risers = 13
20. How wide would the treads be for stairs with a total rise of 8'-2" and a total run of 9'-9" and using the stairwell header as the last riser (Page 10.13,
Section 5.1.2)?
Answer
8’-2 = 98”98”/ 7” (ideal riser height) = 14 risersThere will be one less tread than risers = 13 9’-9” = 117”117” / 13 = 9” for a tread widthStairway requires 13 treads that are 9”wide.
21. What part of a framing square is used to measure the unit rise of a stair stringer (Page 10.18,
Section 5.3.0 Figure 22)?
Answer
Tongue
22. What part of a framing square is used to measure the unit run of a stair stringer (Page 10.18,
Section 5.3.0 Figure 22)?
Answer
Blade
End of Presentation
