A survey Method and new design Lecture Chair for Complied Ergonomics Guideline at Classroom Building 2 Suranaree University of Technology, Thailand
The paper describes ergonomics problems trend of
student at B5101 classroom building 2, Suranaree University of
Technology. The objective to survey ergonomics problems and effect
from use chairs for sitting in class room. The result from survey
method 100 student they use lecture chair for sitting in classroom
more than 2 hours/ day by RULA[1]. and Body discomfort survey[2].
The result from Body discomfort survey contribute fatigue problems
at neck, lower back, upper back and right shoulder 2.93, 2.91, 2.33,
1.75 respectively and result from RULA contribute fatigue problems
at neck, body and right upper arm 4.00, 3.75 and 3.00 respectively
are consistent. After that the researcher provide improvement plan
for design new chair support student fatigue reduction by prepare
data of sample anthropometry and design ergonomics chair prototype
3 unit. Then sample 100 student trial to use new chair and evaluate
again by RULA, Body discomfort and satisfaction. The result from
trial new chair after improvement by RULA present fatigue reduction
average of head and neck from 4.00 to 2.25 , body and trunk from
3.75 to 2.00 and arm force from 1.00 to 0.25 respectively. The result
from trial new chair after improvement by Body discomfort present
fatigue reduction average of lower back from 2.91 to 0.87, neck from
2.93 to 1.24, upper back 2.33 to 0.84 and right upper arm from 1.75
to 0.74. That statistical of RULA and Body discomfort survey
present fatigue reduction after improvement significance with a
confidence level of 95% (p-value 0.05). When analyzing the
relationship of fatigue as part of the body by Chi – square test during
RULA and Body discomfort that before and after improvements were
consistent with the significant level of confidence 95% (p-value 0.05)
. Moreover the students satisfaction result from trial with a new chair
for 30 minutes [3]. 72 percent very satisfied of the folding of the
secondary writing simple 66% the width of the writing plate, 64% the
suitability of the writing plate, 62% of soft seat cushion and 61%
easy to seat the chair.
[1] McAtamney, L. and E. N. Corlett. 1993. RULA survey method for the
investigation of work-related upper limb disorders. Applied Ergonomics. 24 : 91-99.
[2] Chaffin, D.B. 1973. Localized Muscle Fatigue-Definition and Measurement. Occupational Medicine. 15: 346-154.
[3] Kitti Intranon and other, The study of work sitting posture by used desk
and chair prototype test.
[4] Sut Sriburapha. Ergonomics : Sitting and Chair. Bankok, Physics center
publishing, 2001.
[5] Ulrich Burandt, Etienne Grandjean. A methodology of chair evaluation.
Department of Industrial Engineering : State University of New York at
Buffalo, USA ; 1959
[1] McAtamney, L. and E. N. Corlett. 1993. RULA survey method for the
investigation of work-related upper limb disorders. Applied Ergonomics. 24 : 91-99.
[2] Chaffin, D.B. 1973. Localized Muscle Fatigue-Definition and Measurement. Occupational Medicine. 15: 346-154.
[3] Kitti Intranon and other, The study of work sitting posture by used desk
and chair prototype test.
[4] Sut Sriburapha. Ergonomics : Sitting and Chair. Bankok, Physics center
publishing, 2001.
[5] Ulrich Burandt, Etienne Grandjean. A methodology of chair evaluation.
Department of Industrial Engineering : State University of New York at
Buffalo, USA ; 1959
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:63512", author = "Sumalee B. and Sirinapa L. and Jenjira T. and Jr. and Setasak S.", title = "A survey Method and new design Lecture Chair for Complied Ergonomics Guideline at Classroom Building 2 Suranaree University of Technology, Thailand", abstract = "The paper describes ergonomics problems trend of
student at B5101 classroom building 2, Suranaree University of
Technology. The objective to survey ergonomics problems and effect
from use chairs for sitting in class room. The result from survey
method 100 student they use lecture chair for sitting in classroom
more than 2 hours/ day by RULA[1]. and Body discomfort survey[2].
The result from Body discomfort survey contribute fatigue problems
at neck, lower back, upper back and right shoulder 2.93, 2.91, 2.33,
1.75 respectively and result from RULA contribute fatigue problems
at neck, body and right upper arm 4.00, 3.75 and 3.00 respectively
are consistent. After that the researcher provide improvement plan
for design new chair support student fatigue reduction by prepare
data of sample anthropometry and design ergonomics chair prototype
3 unit. Then sample 100 student trial to use new chair and evaluate
again by RULA, Body discomfort and satisfaction. The result from
trial new chair after improvement by RULA present fatigue reduction
average of head and neck from 4.00 to 2.25 , body and trunk from
3.75 to 2.00 and arm force from 1.00 to 0.25 respectively. The result
from trial new chair after improvement by Body discomfort present
fatigue reduction average of lower back from 2.91 to 0.87, neck from
2.93 to 1.24, upper back 2.33 to 0.84 and right upper arm from 1.75
to 0.74. That statistical of RULA and Body discomfort survey
present fatigue reduction after improvement significance with a
confidence level of 95% (p-value 0.05). When analyzing the
relationship of fatigue as part of the body by Chi – square test during
RULA and Body discomfort that before and after improvements were
consistent with the significant level of confidence 95% (p-value 0.05)
. Moreover the students satisfaction result from trial with a new chair
for 30 minutes [3]. 72 percent very satisfied of the folding of the
secondary writing simple 66% the width of the writing plate, 64% the
suitability of the writing plate, 62% of soft seat cushion and 61%
easy to seat the chair.", keywords = "Ergonomics, Work station design, ErgonomicsChair, Student, Fatigue", volume = "5", number = "5", pages = "938-4", }