Module 27110 06 Basic Stair Layout 1 The

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

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

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

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). A Answer Tread

6. The stair parts marked B in the picture are _____ (Page 10. 5, Section 3. 0. 0 Figure 10). B Answer Riser

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). B Answer Skirtboard

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”/ 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”/ 7” (ideal riser height) = 14 risers There 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”/ 7” (ideal riser height) = 14 risers There will be one less tread than risers = 13 9’-9” = 117” / 13 = 9” for a tread width Stairway requires 13 treads that are 9”wide.