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THE UNIVERSITY OF THE WEST INDIESFACULTY OF SCIENCE AND
TECHNOLOGY
ESST 3101 Environmental ErgonomicsSemester Project
Report Project Title:
Students Names and ID No.:
Date : 2017
Advisors: Dr. Alexander NikovMr. Jairaj Ramkissoon
ESST 3101 EE Project document.docx page 1 of 13
CONTENTCONTENT............................................................................................................................................................................. 21 Selection and description of workplace......................................................................................................................... 3
1.1 Description of workplace........................................................................................................................................ 3
1.2 User Description.................................................................................................................................................... 6
1.3 Tasks Analysis....................................................................................................................................................... 6
2 Checklist for ergonomic evaluation................................................................................................................................ 72.1 Development of checklist and workplace study.....................................................................................................7
2.2 Workplace study.................................................................................................................................................... 8
3 Ergonomic analysis of workplace.................................................................................................................................. 83.1 Calculation of workplace hazard risks.................................................................................................................... 8
3.2 Summary of problems and corrective measures...................................................................................................9
3.3 Analysis of data by ErgoEaser............................................................................................................................... 9
4 Ergonomic design of 2-5 variants of workplace.............................................................................................................95 Usability testing............................................................................................................................................................. 9
5.1 2 variants of workplace for testing in usability lab..................................................................................................9
5.2 List of users tasks for workplaces testing in usability lab.....................................................................................10
5.3 Post-test questionnaire for usability testing.........................................................................................................10
5.4 Usability testing results........................................................................................................................................ 11
5.5 Implementation.................................................................................................................................................... 11
ESST 3101 EE Project document.docx page 2 of 13
1 Selection and description of workplace
1.1 Description of workplaceDescribe the existing workplace though both diagrams, text, pictures (see below) and video. Use the following guidelines for photo making.
Picture position example1. Company plate with WS# and employee names2. Common overview of WP with user
3. Left view work on desk (KB use, chair back support, arms chair support, eye level regarding monitor top)
4. Right view work on desk (KB use, chair back support, arms chair support, eye level regarding monitor top)
5. Leg space under desk without user
ESST 3101 EE Project document.docx page 3 of 13
6. User sitting on chair
7. Other important picture, e.g. phone use, lighting, hand pain location
1.2 Workplace dimensions measurements
Actual workstation dimensions Recommended workstation dimensionshttp://www.thehumansolution.com/ergonomic-office-desk-chair-keyboard-height-calculator.html
Popliteal height
Eye height (sitting) [cm]
Sitting eye height range [cm]
Sitting elbow height [cm]
Seat height to floot [cm]
Desk height [cm]
Desk depth [cm]
Desk length [cm]
ESST 3101 EE Project document.docx page 4 of 13
Elbow Rest Height
Elbow to Elbow
Elbow to Fingertip (middle figer)
Buttock to Popliteal
Chair
Back Support Height
Back Support Angle
Seat Pan Height
Seat Pan Depth
Seat Pan Angle
Arm Support Height
Arm Support Width
Arm Support Depth
Monitor
Height
ESST 3101 EE Project document.docx page 5 of 13
Angle
Distance (between monitor and user)
Keyboard
Height of keyboard
Angle of keyboard
Distance (between keyboard and user)
Wrist Height (height of wrist support)
Mouse
Height of mouse
Angle of mouse
Distance (between mouse and user)
Wrist Height (height of mouse support)
If you have specification sheets and other technical materials, they belong in the appendix.
1.3 User DescriptionList the types of users who might be using the workplace. Provide a short description of the characteristics for types of the users on your list (e.g., a child is someone with small hands; an engineer is someone with technical knowledge)
1.4 Tasks AnalysisIdentify the primary tasks through which users interact with the workplace/product/system. Observe/interview the users and define the relevant % of working time allocated to them during 1 week/1 month.
1.4.1. Tasks with or without use of computerTasks Working time [%]
1. Tasks with the use of computer
2. Tasks without use of computer
1.4.2. Tasks without use of computerTasks Working time [%]
1.
2.
3.
ESST 3101 EE Project document.docx page 6 of 13
4.
5.
Total 100
1.4.3. Tasks with use of computerTasks Software name, version Working time [%]
1.
2.
3.
4.
5.
6.
7.
8.
Total 100
Identify the primary tasks through which users interact with the workstation. Choose two computer tasks for an in-depth description. For each task, describe how a user would complete the task using the existing workstation. Descriptions with sufficient detail are those in which the reader can clearly identify the following types of activities:
physical (e.g., press the button), perceptual (e.g., read the signs/labels, hear the warning signs), and cognitive (e.g., decide which button to push, determine what is causing the problem).
1.5 Workplace Lighting Measurements (use lux meter)Workplace lighting measurement items Point1 Point2 Point3 Point4 Averagea) Record the value (in lux) of light emitted from a computer screenb) Record the value of light incident 45cm from the displayc) Record the value of illumination in the background above the displayd) Record the value of the illumination to the left of the displaye) Record the value of the illumination to the right of the displayf) Record the value of light at the keyboardg) Record the value of light at the mouseh) Record the value of illumination on the desk reading surfacei) Record the value of light from the nearest light sourcej) Record the value of light from the nearest windowk) Record the value of light outdoors in a covered areal) Record the value of light in direct sunlightm)n)o)p)q)r)s)t)u)v)w)x)y)
Total average:
2 Checklist for ergonomic evaluation
2.1 Development of checklist and workplace studyPrepare a checklist for ergonomic evaluation of workplace with the following dimensions:
ESST 3101 EE Project document.docx page 7 of 13
1. Dimension: Work Organization (tasks specification, workload, work monitoring, training)
2. Dimension: Display screens/VDU (monitor, glare)
3. Dimension: Input devices (keyboard, mouse, trackball, telephone headset)
4. Dimension: Furniture (desk, chair, footrest, document holder, wristrest/armrest)
5. Dimension: Work space/ work surface/ layout/ work posture/ seating
6. Dimension: Environment (illumination, temperature, air flow, noise)
7. Dimension: Software
8. Dimension: Health/hazards
9. Dimension: CommonUse the example checklist given on project website (http://www2.sta.uwi.edu/~anikov/optm3041/projects/word-form-2-checklist.docx)
2.2 Workplace study2.2.1. Collect data using the checklist from the workplace2.2.2. Collect data using a lightmeter
3 Ergonomic analysis of workplace
3.1 Calculation of workplace hazard risksCalculate using EXCEL sheet the workplace hazard risks for different dimensions using data gathered from assignment 2. Determine the average values for each dimension in % [0,100] transforming the scale x∈[1,5] to y∈[0,100] by formulae y=(x-1)*25. The total health risk is the average risk of all dimensions (1-8). Calculate the dissatisfaction dimension by the formulae dissatisfaction = 100-satisfaction. Present the results in a bar chart (see below example bar chart). Use integer digits and colors as follows: dark green: 0-25%; light green: 26-50%; yellow: 51-75%; red: 76-100%
ESST 3101 EE Project document.docx page 8 of 13
1.work
organiza
tion
2.monito
rs
3.input d
evices
4.furn
iture
5. works
pace
6.envir
onment
7.software
8.health
hazard
s
health
risk
dissati
sfaction
0
10
20
30
40
50
60
70
15
0 0
1611
25
60 0
10
0 0 0 0 0 0 0
4539
00
51
66
0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0
Workplace hazard risks [%]
3.2 Summary of problems and corrective measures Present in a table a summary of problems allocated and the relevant corrective measures (see example table below). Include pictures where appropriate.
Q# Summary of problems allocated Corrective measures to solve problems allocated
12162133
Include pictures Monitor position not directly in front of user; laptop monitor too low; primary monitor too high; head is turned to the side; rotating neck to view monitor places increased demands on neck and shoulders; head not directly over spine; head tilted up/down; head not balanced over shoulders; shoulders: rounded forward, lowered
Raise laptop by stand/arm; lower primary monitor; position primary monitor in front of user; position keyboard in front of user; provide wristrests for keyboard and mouse
25 Include pictures Extended phone use
Provide headset
32 Include pictures Work with a number of paper documents
Consider document holder between keyboard and monitor
42 Temperature too cold sometimes AC adjustment
3.3 Analysis of data by ErgoEaser Use ErgoEaser for analysis of data collected. Present the results including screenshots.
4 Ergonomic design of 2-5 variants of workplaceDesign 2-5 variants of the workplace (e.g. old workplace, low-cost solution, optimal solution) trying to reduce health risk. Use ErgoEaser. Present also screenshots of ErgoEaser.
5 Usability testing
5.1 2 variants of workplace for testing in usability lab. Prepare 2 variants of workplace for testing them in usability lab. Select from the table below workplace components close to GENIVAR workplace and enter your choice the table Table 1: WP components available in usability lab
WP componen
ts 1 2 3 4 5 6 7 8 9 10keyboard type keyboard wristrest yes no
ESST 3101 EE Project document.docx page 9 of 13
mouse type dell ergonomic x-tech mouse pad yes no
software
Autocad 2008 standard
Autocad MEP 2008
Autocad 2008 Map 3D
CorelDraw 10
Photoshop cs3
MS Word
MS Excel
MS Outlook
MS PowerPont
Google SketchUp
chair type 1 type2 type3 type4 type5
lightinglocal lamp 4 lamps ceiling lighting
AC hot medium cool cold document holder type1 type2 screen filter yes no footrest yes no phone yes no monitor stand yes no
Table 2: Selected workplace components for workplace configuration to be tested in usability lab (enter here your choice)
WP componentsconfiguration old
WPconfiguration new
WPkeyboard type keyboard wristrest mouse type mouse pad
software chair lighting AC document holder screen filter desk layout footrest phone monitor stand
Present here the sketches of the workplaces (old and new) layout indicating the location of workplace components
5.2 List of users tasks for workplaces testing in usability labPrepare 5-10 tasks for users. For example:Task 1: Find Microsoft Word Document titled “Usability Lab Group 1” Change the words “Good Morning” to Bold and Underline. change the font to Times New Roman. Change the font color to blue Task 2: Using Microsoft Excel, enter “150” in cell A2 and enter “200” in cell A3. Using excel “sum” formula, calculate sum of A2 and A3.
Write answer here: ……..Task 3: Find Microsoft Publisher document titled “Publisher Group 1”, insert a border on document. Task 4: Find Microsoft Powerpoint document titled “Powerpoint Group 1”, insert new slide and select style 5. Task 5: Send an email to [email protected] 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 an anti-glare filter for monitor. b. Write cost here: Task 7: Use the phone to call 84127
5.3 Post-test questionnaire for usability testingPrepare a post-test questionnaire for usability testing (10-15 questions). Use tools like Interactive Heuristic Evaluation Toolkit (http://www.id-book.com/firstedition/catherb/index.htm). Select/modify/add relevant heuristics and select/modify/add relevant questions measuring these heuristics in scale [1, 5] as shown below.
# Questions Strongly Agree
Agree Neutral Disagree Strongly Disagree
1 2 3 4 5Match between system & real world
ESST 3101 EE Project document.docx page 10 of 13
1 Is the software used familiar to you?User control, freedom & ease of use
2 Are you easily able to undo actions?3 Is the software easy to learn?4 Is the software easy to remember how to use?
Workplace Suitability for Tasks5 You found the configuration of the workplace to be appropriate for
the tasks required.6 From a seated position you can reach the keyboard and mouse
comfortably without experiencing any wrist strain.7 It was not difficult to type and use the paper documents
simultaneouslyUser Comfort
8 You were seated comfortably on the chair and there was no strain on your back (upper and lower).
9 Are you comfortable with the monitor height?10 Are you comfortable with the positioning of the keyboard?11 Are you comfortable with the desk height?12 There was adequate room for your legs under the desk.
Ease of use & efficiency13 The wrist rest improves your comfort to allow for efficient
completion of tasks? 14 The document holder improves your ability to efficiently complete
tasks?15 Does moving the printer nearer allow you to retrieve documents
easier?16 Is it easy to use the phone while signing the document?17 Is the mouse able to be moved about comfortably to allow for
efficient completion of tasks?Working Environment
18 The lighting in the room was sufficient to allow you to read and perform your tasks.
19 You found the temperature in the room to be comfortable enough to allow you to work efficiently and effectively.
5.4 Usability testing resultsPresent the results of usability testing of old and new WP (screenshot from OBSERVER, some screenshots from video avi file and photos if available), analyze them and give suggestions for workplaces redesign.
5.5 ImplementationImplement project results in the workplace. Enter relevant info and photos in the table below.
Picture position Photo initial workplace Photo redesigned workplace1. Company plate with
WS# and employee names
2. Common overview of WP with user
ESST 3101 EE Project document.docx page 11 of 13
3. Left view work on desk (KB use, chair back support, arms chair support, eye level regarding monitor top)
4. Right view work on desk (KB use, chair back support, arms chair support, eye level regarding monitor top)
5. Leg space under desk without user
6. User sitting on chair
7. Other important picture, e.g. phone use, lighting, hand pain location
ESST 3101 EE Project document.docx page 12 of 13
ESST 3101 EE Project document.docx page 13 of 13