CPE Workplace Design & Modifications 3 — Questions and Answers
Question 1: In office ergonomics, what is the recommended vertical distance between the top of the monitor screen and the worker's eye level?
- The top of the screen should be at or slightly below eye level (Correct answer)
- The center of the screen should be at eye level
- The bottom of the screen should be at eye level
- The screen should be 10–15 cm above eye level to reduce neck flexion
Correct answer: The top of the screen should be at or slightly below eye level
Positioning the top of the monitor at or slightly below eye level allows the eyes to gaze slightly downward, the most comfortable resting position for the eyes and neck.
Question 2: Which of the following is the MOST appropriate accommodation when a worker with limited shoulder mobility cannot reach overhead controls in an existing workstation layout?
- Relocate controls to the worker's functional reach envelope (Correct answer)
- Provide a step stool so the worker can elevate their reach
- Recommend physical therapy to restore shoulder range of motion
- Document the limitation and assign the task to another employee
Correct answer: Relocate controls to the worker's functional reach envelope
Relocating controls within the worker's functional reach envelope is an engineering modification that eliminates the hazard while complying with ADA reasonable accommodation principles.
Question 3: A company is designing a new inspection station where workers must detect surface defects on small parts. What lighting level (illuminance) is generally recommended for fine inspection tasks?
- 1000–2000 lux (Correct answer)
- 200–300 lux
- 50–100 lux
- 500–750 lux
Correct answer: 1000–2000 lux
Fine visual inspection tasks requiring discrimination of small detail require high illuminance levels of 1000–2000 lux to support visual acuity.
Question 4: When evaluating floor surfaces in a standing work environment, which property is MOST important for reducing lower-extremity fatigue?
- Anti-fatigue mat with moderate compressibility (Correct answer)
- Hard concrete with non-slip coating
- Carpeted surface with thick foam backing
- Polished tile for easy cleaning
Correct answer: Anti-fatigue mat with moderate compressibility
Anti-fatigue mats with moderate compressibility reduce static muscle loading in the legs and feet by encouraging subtle postural micro-movements.
Question 5: Which keyboard tray angle is recommended to maintain a neutral wrist posture during typing?
- Slight negative tilt (front edge higher than rear) (Correct answer)
- Flat (0° tilt)
- Positive tilt (rear edge higher, tilting toward the user)
- 15° positive tilt to match forearm angle
Correct answer: Slight negative tilt (front edge higher than rear)
A slight negative keyboard tilt keeps the wrists in a neutral or slightly extended position, reducing flexor tendon strain during keying.
Question 6: A new call center workstation design must accommodate workers from the 5th to 95th percentile height. Which design strategy BEST achieves this goal?
- Fully adjustable workstation with height-adjustable desk, monitor arm, and chair (Correct answer)
- Designing to the 50th percentile as a compromise
- Providing three fixed-height station configurations
- Using only chair adjustability to accommodate range
Correct answer: Fully adjustable workstation with height-adjustable desk, monitor arm, and chair
Fully adjustable workstations with independent adjustment of all major components provide the widest accommodation range for diverse user populations.
Question 7: When positioning a document holder for a data-entry task, where should it be placed relative to the monitor?
- Adjacent to the monitor at the same height and distance as the screen (Correct answer)
- Below the monitor on the desk surface
- Above the monitor to reduce neck downward gaze
- Between the keyboard and monitor at a 45° angle
Correct answer: Adjacent to the monitor at the same height and distance as the screen
Placing the document holder adjacent to the monitor at the same height and viewing distance minimizes head and eye movement, reducing neck and eye strain.
CPE Workplace Design & Modifications 3
In office ergonomics, what is the recommended vertical distance between the top of the monitor screen and the worker's eye level?