Summary IOP2603 Assessment 1 EERGONOMICS
CHECKLIST
A work space is - CORRECT ANSWERS<<>>>a three dimensional region surrounding the
worker
Workplace designer should keep design factors in mind - CORRECT ANSWERS<<>>>-large
variability in size of people in the work force population
-understand the user population
sit-stand workstations important considerations - CORRECT ANSWERS<<>>>-job requires
frequent reaches more than 16 inches forward and more than 6 inches above the work
surface
-job consists of multiple tasks, some best performed in the sitting while others stand
sit-stand workstation advantages - CORRECT ANSWERS<<>>>-taking body weight off legs
-ability to avoid unnatural body postures
-lower energy consumption
->reduce fatigue
-less demand on the cardiovascular system
-more stability for precision tasks or fine manipulative movements
-ability to operate foot controls more easily, precisely and safely while maintaining
good working postures
General principles for workstation design to think about - CORRECT ANSWERS<<>>>-what
must the worker see while on the job?
-what must the worker hear?
-what must the worker perform?
-what is the sequence of job activities?
-what clearance are required?
-what storage is required?
,minimize pressure on the forearms - CORRECT ANSWERS<<>>>-rounding and padding
the edge
-changing the work-surface height or the seat
-providing arm rests
-redesigning the job.
Seated workstation recommendations (circumstances) - CORRECT ANSWERS<<>>>-all
items needed for routine task can be easily supplied and handled within the seated
workstation.
-job being performed does not require more than 40 cm forward or higher than 15cm
above work surface
-doesnt require handling large forces greater than 10 pounds
-writing or light assembly
-precision or fine manipulative movements need a level of stability
Standing workstation recommendations (circumstances) - CORRECT ANSWERS<<>>>-
suitable leg room
-involve handling objects weighing more than 10 pounds
-job requires high, low or extended reaches frequently
-requires frequent movement from one station to others
-job requires the exertion of downward forces as in packaging and wrapping
operations.
taking measurements - CORRECT ANSWERS<<>>>labels and drawing dimensions of
workstations.
Job Analysis step 1 - CORRECT ANSWERS<<>>>1) break the job down into tasks and
subtasks.
Goald is to link excessive job demands to specific aspect of the job or work
environment.
,Job analysis step 2 - CORRECT ANSWERS<<>>>after the job is broken into tasks
determine if work methods, the workstation, tools and equipment required to perform
each task may cause a musculoskeletal injury or illness
job analysis specific tasks - CORRECT ANSWERS<<>>>force, posture, frequency, duration
or work and recovery period, and vibration and cold temperature.
Strength data - CORRECT ANSWERS<<>>>various populations and muscle groups have
been published and can be found in several sources
anthropometry - CORRECT ANSWERS<<>>>data on body size and range of joint motion
can be used to assess the appropriatness of workplace, equipment and product designs
relative to workforce capacities for reach, grasp, and clearance.
physiological data - CORRECT ANSWERS<<>>>useful if jobs involve repetitive lifting, load
carrying and general use of large muscle groups.
data: maximum aerobic capacity declines with age
Expert assessment - CORRECT ANSWERS<<>>>can quickly perform a needs assessment
and provide quick and accurate recommendations
hand tools - CORRECT ANSWERS<<>>>-tools are extensions of human hands
-they enhance the capability and productivity of users performing tasks
-poorly designed tools or using the wrong tools for the job can result in injuries,
reduced productivity for the worker.
grip strength - CORRECT ANSWERS<<>>>the maximum momentary squeeze force exerted
on a hand dynamometer
, Endurance - CORRECT ANSWERS<<>>>the length of time a person can exert a specified
force
Factors leading to development of CTDs - CORRECT ANSWERS<<>>>-use of excess force
during normal motions
-awkward or extreme joint motions
-high repetition of same movement
-lack of sufficient rest
symptons associated with CTDs - CORRECT ANSWERS<<>>>-pain
-restriction joint movement
-soft tissue swelling
principles of tool design - CORRECT ANSWERS<<>>>- must perform effectively for
intended purpose
- must be properly proportional to body dimension of the operator
- designed to match strength and work capacity of operator
-it should not cause undue fatigue
-it must provide sensory feedback to the user
-its capital and maintenance costs should be reasonable
Anatomical concerns (wrist) - CORRECT ANSWERS<<>>>-Radial deviation (bent horizontal
in)
- neutral
- ulnar deviation
(bent horizontal out)
-Dorsiflexion (bent vertical out)
-neutral
-Palmar flexion (bent vertical in)
CHECKLIST
A work space is - CORRECT ANSWERS<<>>>a three dimensional region surrounding the
worker
Workplace designer should keep design factors in mind - CORRECT ANSWERS<<>>>-large
variability in size of people in the work force population
-understand the user population
sit-stand workstations important considerations - CORRECT ANSWERS<<>>>-job requires
frequent reaches more than 16 inches forward and more than 6 inches above the work
surface
-job consists of multiple tasks, some best performed in the sitting while others stand
sit-stand workstation advantages - CORRECT ANSWERS<<>>>-taking body weight off legs
-ability to avoid unnatural body postures
-lower energy consumption
->reduce fatigue
-less demand on the cardiovascular system
-more stability for precision tasks or fine manipulative movements
-ability to operate foot controls more easily, precisely and safely while maintaining
good working postures
General principles for workstation design to think about - CORRECT ANSWERS<<>>>-what
must the worker see while on the job?
-what must the worker hear?
-what must the worker perform?
-what is the sequence of job activities?
-what clearance are required?
-what storage is required?
,minimize pressure on the forearms - CORRECT ANSWERS<<>>>-rounding and padding
the edge
-changing the work-surface height or the seat
-providing arm rests
-redesigning the job.
Seated workstation recommendations (circumstances) - CORRECT ANSWERS<<>>>-all
items needed for routine task can be easily supplied and handled within the seated
workstation.
-job being performed does not require more than 40 cm forward or higher than 15cm
above work surface
-doesnt require handling large forces greater than 10 pounds
-writing or light assembly
-precision or fine manipulative movements need a level of stability
Standing workstation recommendations (circumstances) - CORRECT ANSWERS<<>>>-
suitable leg room
-involve handling objects weighing more than 10 pounds
-job requires high, low or extended reaches frequently
-requires frequent movement from one station to others
-job requires the exertion of downward forces as in packaging and wrapping
operations.
taking measurements - CORRECT ANSWERS<<>>>labels and drawing dimensions of
workstations.
Job Analysis step 1 - CORRECT ANSWERS<<>>>1) break the job down into tasks and
subtasks.
Goald is to link excessive job demands to specific aspect of the job or work
environment.
,Job analysis step 2 - CORRECT ANSWERS<<>>>after the job is broken into tasks
determine if work methods, the workstation, tools and equipment required to perform
each task may cause a musculoskeletal injury or illness
job analysis specific tasks - CORRECT ANSWERS<<>>>force, posture, frequency, duration
or work and recovery period, and vibration and cold temperature.
Strength data - CORRECT ANSWERS<<>>>various populations and muscle groups have
been published and can be found in several sources
anthropometry - CORRECT ANSWERS<<>>>data on body size and range of joint motion
can be used to assess the appropriatness of workplace, equipment and product designs
relative to workforce capacities for reach, grasp, and clearance.
physiological data - CORRECT ANSWERS<<>>>useful if jobs involve repetitive lifting, load
carrying and general use of large muscle groups.
data: maximum aerobic capacity declines with age
Expert assessment - CORRECT ANSWERS<<>>>can quickly perform a needs assessment
and provide quick and accurate recommendations
hand tools - CORRECT ANSWERS<<>>>-tools are extensions of human hands
-they enhance the capability and productivity of users performing tasks
-poorly designed tools or using the wrong tools for the job can result in injuries,
reduced productivity for the worker.
grip strength - CORRECT ANSWERS<<>>>the maximum momentary squeeze force exerted
on a hand dynamometer
, Endurance - CORRECT ANSWERS<<>>>the length of time a person can exert a specified
force
Factors leading to development of CTDs - CORRECT ANSWERS<<>>>-use of excess force
during normal motions
-awkward or extreme joint motions
-high repetition of same movement
-lack of sufficient rest
symptons associated with CTDs - CORRECT ANSWERS<<>>>-pain
-restriction joint movement
-soft tissue swelling
principles of tool design - CORRECT ANSWERS<<>>>- must perform effectively for
intended purpose
- must be properly proportional to body dimension of the operator
- designed to match strength and work capacity of operator
-it should not cause undue fatigue
-it must provide sensory feedback to the user
-its capital and maintenance costs should be reasonable
Anatomical concerns (wrist) - CORRECT ANSWERS<<>>>-Radial deviation (bent horizontal
in)
- neutral
- ulnar deviation
(bent horizontal out)
-Dorsiflexion (bent vertical out)
-neutral
-Palmar flexion (bent vertical in)
