CIEE Workstation Design & Optimization 3

Question 1

Which reach zone concept is most critical when designing a workstation to prevent shoulder abduction and elevation?

Accepted Answer

Primary (normal) work zone

Answer

The primary (normal) work zone—defined by forearm rotation with the elbow at the side—keeps frequently used items within reach without shoulder loading.

Question 2

An industrial ergonomist is evaluating leg clearance at a seated workstation. The minimum recommended thigh clearance between the seat and the underside of the work surface is approximately:

Accepted Answer

16 cm (6.3 in)

Answer

ANSI/HFES 100-2007 recommends a minimum thigh clearance of approximately 16 cm to accommodate seated posture changes without contact.

Question 3

Which factor most directly contributes to contact stress (pressure points) at a workstation?

Accepted Answer

Hard, sharp workstation edges contacting soft tissue

Answer

Contact stress occurs when hard or sharp surfaces press against soft tissue, compressing nerves and blood vessels, and is addressed by padding or rounding edges.

Question 4

When designing a workstation for use by both male and female workers of varying stature, the design should prioritize which anthropometric approach?

Accepted Answer

Design for adjustability to accommodate the 5th–95th percentile range

Answer

Adjustable workstations that span the 5th–95th percentile range are the accepted ergonomic standard for mixed-population use.

Question 5

A CIEE candidate is reviewing footrest requirements at a sedentary workstation. A footrest is indicated when:

Accepted Answer

The worker's feet do not reach the floor after setting the chair to an ergonomic seat height

Answer

A footrest is required when raising the chair to achieve proper elbow-to-work-surface alignment results in the worker's feet dangling without floor contact.

(CIEE) Certified Industrial Ergonomic Evaluator Practice Test

(CIEE) Certified Industrial Ergonomic Evaluator Practice Test

CIEE Workstation Design & Optimization 3