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THE UNIVERSITY OF THE WEST INDIES FACULTY OF SCIENCE AND

TECHNOLOGY

ESST 3101 Environmental Ergonomics Semester Project

Report

Project Title: Workspace Analysis. Students Names and ID No.: Lela Bhairosingh 811001109 (Assisted with Task 1 and 2) Malini Ramberran 812001695 (Assisted with Task 1 and 2) Myriam Smith 94707954 Task 1-5 Date : 10th April 2016 Advisors: Dr. Alexander Nikov Ms. Elizabeth Sampson

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CONTENT CONTENT ............................................................................................................................................................................... 2 1 Selection and description of workplace ........................................................................... Error! Bookmark not defined.

1.1 Description of workplace ......................................................................................... Error! Bookmark not defined.

1.2 User Description ...................................................................................................... Error! Bookmark not defined.

1.3 Tasks Analysis ........................................................................................................ Error! Bookmark not defined.

2 Checklist for ergonomic evaluation ................................................................................................................................. 3 2.1 Development of checklist and workplace study .................................................................................................... 16

2.2 Workplace study .................................................................................................................................................... 17

3 Ergonomic analysis of workplace .................................................................................................................................. 31 3.1 Calculation of workplace hazard risks ................................................................................................................... 31

3.2 Summary of problems and corrective measures .................................................................................................. 31

3.3 Analysis of data by ErgoEaser .............................................................................................................................. 34

4 Ergonomic design of 2-5 variants of workplace .............................................................. Error! Bookmark not defined. 5 Usability testing ............................................................................................................................................................. 48

5.1 2 variants of workplace for testing in usability lab. ................................................................................................ 48

5.2 List of users tasks for workplaces testing in usability lab ...................................................................................... 50

5.3 Post-test questionnaire for usability testing .......................................................................................................... 51

5.4 Usability testing results ........................................................................................... Error! Bookmark not defined.

5.5 Implementation ...................................................................................................................................................... 53

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1 Selection and description of workplace

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2 Checklist for ergonomic evaluation

2.1 Development of checklist and workplace study

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2.2 Workplace study

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3 Ergonomic analysis of workplace

3.1 Calculation of workplace hazard risks

3.2 Summary of problems and corrective measures

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3.3 Analysis of data by ErgoEaser

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Variable Name Small Female cm Large Male cm Range. cm Human

Popliteal Height 43 43 No change Elbow Rest Height 23 23 No change Eye Height 73 73 No change Elbow to Elbow 38 38 No change Elbow to fingertip 43 43 No change Buttox to popliteal 43 43 No change Chair: Back Support

Height 21 22 21-22

Angle 7 10 7-10

Seat Pan

Height 44 49 44-49 Angle 0 0 49 Depth 33 33 No change Arm Support

Height 18 29 18-29 Width 31 50 31-50 Depth 25 25 No change Foot Rest

Height 7 0 7-0 Angle 0 0 No change Distance 43 47.5 43-47.5 INPUTS Work-surface

Height 65 79.5 65-79.5 Distance 21 32 21-32 Twisting Center Center No change Sharp Edges No No No change Insufficient lighting No No No change Keyboard

Height 65 77 65-77 Angle 0 0 No change Distance 36 47 36-47 Wrist support 3 3 No change Twisting Center Center No change Sharp edges No No No change Mouse

Height 65 77 65-77 Angle 0 0 No change Distance 36 47 36-47 Wrist support 3 3 No change Twisting Center Center Sharp edges No No No change DISPLAY DEVICES Monitor

Height 123 124 123-124 Angle 0 0 No change Distance 59 52 59-52 Twisting Center Center No change Glare No No No change Document

Height 115 124 115-124 Angle 0 0 No change Distance 59 52 59-52 Twisting Center center No change Insufficient Lighting. No No No change

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4 Ergonomic Design

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5 Usability testing

5.1 2 variants of workplace for testing in usability lab.

Table 2: Selected workplace components for workplace configuration to be tested in usability lab.

Present here the sketches of the workplaces (old and new) layout indicating the location of workplace components

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5.2 List of users tasks for workplaces testing in usability lab

Prepare 5-10 tasks for users. For example:

Task 3: Open Microsoft Powerpoint , Create a slide and inset a heading” employee evaluation” Answer the phone. Task 4 Press the record button. When finished press : stop recording” Task 5: Open Microsoft Excell document label it “Payment organizational chart”, insert price 10 in cell 20 and 300 in cell 21 sum the

two cell values and write the value here”--------- Task 5: Send an email to msecosmith@gmail.com titled Usability Lab. OPTM3041 VE Project 1-optm3041-ve-pro-finreport.docx page

39 of 50 Task 6: Open up Google Chrome browser and search for a chair module. Write cost here:

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5.3 Post-test questionnaire for usability testing

Post Test Questionaire.

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5.4 Re calculation of workplace hazard risk.

21

8

15

42

21

42

0

13

20 20

0

5

10

15

20

25

30

35

40

45

Workplace Hazard Risk [%]

dark green: 0-25%; light green: 26-50%; yellow: 50-75%; red: 76-100%

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5.5 Implementation

Implemented project results in the workplace. Picture position Photo initial workplace Photo redesigned workplace

1. Common overview of WP with user. Clearer desk, ect.

2. Left view work on desk

(KB use- more wrist support – better posture, chair back support, arms chair support, eye level regarding monitor top)

3. Right view work on desk

(KB use, chair back support, arms chair support, eye level regarding monitor top)

Adjustment of Keyboard and mouse to give more wrist support.

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Addition of Document Holder

4. Leg space under desk without user

Addition of Foot support, to prevent feet from resting on chair legs.

5. User sitting on chair

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6. Other important picture, e.g. phone use and writing.

Additional office changes.

To ensure the user’s experience is maximized the additional following items could be added.

1. Arm pads to chair for arm support.

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2. The office floor, addition of recycled plastic wood flooring.

3. Installation of solar tubes to reduce on electricity and depend on more natural lighting

4. Utilize ceramic paint to reduce the thermal effect of heat transfer, thereby reducing the use of air-condition.

5. Install Green roof system which can reduce the heat transfer and cool the building and reduce energy used to cool building.

6. Install solar panels to power the building, again reducing the cost of power consumed.