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User Trial User Trial

User Trial - PowerPoint Presentation

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Uploaded On 2016-06-27

User Trial - PPT Presentation

Garden Rake Rakes used to collect and relocate leaves light sticks and twigs mulch aggregates etc Common gardening implement in both domestic and commercial settings Introduction Instructions ID: 379360

leaves rake bin user rake leaves user bin hazardous activity mate agree discomfort results material task trial efficiency feel age time recommendations

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Slide1

User Trial

Garden RakeSlide2

Rakes used to collect and relocate leaves, light sticks and twigs, mulch, aggregates etc.Common gardening implement in both domestic and commercial settings.

IntroductionSlide3

Instructions:“You are to quickly and accurately rake these leaves and put them into this garbage bin. You have as long as you need, start when you feel ready.

“Tested males and females in the 22-57 age group.Method:

The user will approach an area that has leaves spread in an area 3mx3m, with a bin off to one side.Using the rake and the rake only, the user is to rake up as many of the leaves as he/she can and place them in the bin, taking as much time as they need.

T

he

conductors of the

trial will take notes regarding efficiency, effectiveness and (dis)comfort.The user will fill in a questionnaire on the activity.

Testing ProcessSlide4

Raking SequenceSlide5

Timed secretly by a stop watch on how long it takes the user to rake up the pile of leaves and put them in the garbage bin.

Observe users to record how effectively they picked up the leaves and to see if they experienced any physical discomfort during the process.Use a questionnaire with open and closed questions (quantitative and qualitative).

Results RecordingSlide6

Age:

Sex:

M

F

1a)

Have you used a rake the same as or similar to the one you tested?

Y N

b)

If yes, could you rank your experience from 1-5? (1 being inexperieced, 5 being very experienced)

1 2 3 4 5

 

2)

Do you have any injuries which affected you using the rake?

 

Y N

3)

How easy did you find the task? (1 being hard, 5 being easy)

1 2 3 4 5

4)

Do you think that this activity would affect you physically if carried out for an extended period of time?

Y N

 

5)

Does the possibilty of hazardous materials coming into contact with your exposed skin whilst using the rake concern you?

Y N

 

6)

Would you purchase this rake for this kind of activity?

 

Y N

7a)

Did you experience any discomfort using the rake, i.e. Pain, shortness of breath, soiling of hands, contacting hazardous material etc?

Y N

 

 

b)

If yes, could you briefly explain your discomfort?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8a)

How much would you agree with each of the following statements?

 

 

 

(strongly disagree, disagree, unsure, agree, agree strongly)

 

 

b)

The rake is the perfect piece of equipment for this task:

 

 

c)

I feel that I can efficiently and effectively pick up leaves with this rake:

 

d)

I could use this rake for extended periods without risking harm to my body:

 

 

 

 

 

e)

I would feel safe using this rake in public environments, where leaves could contain hazardous materials (faecal matter, glass, syringes):

 

 

 

 

 

 

 

 

9)

Do you have any additional comments regarding the activity?

 

 

 Slide7

Results

From the results it was deduced that there are three main problems with using the rake to transfer leaves from the ground into the bin. These are as follows:Handling leaf material;

Physical strain (i.e. bending, repetitive actions, arm complaints);Disposal efficiency.Slide8

Upon redesigning the rake, I will be looking to develop a product that increases product useability by making it more efficient, physically safer and which discourages green waste handling.

RecommendationsSlide9

The Rake-Mate

The result?Slide10

To limit contact between hands and green waste (and potentially hazardous material);To limit repetitive bending;

To increase task efficiency.All of these factors respond to our recommendations from the first trial

But why would a rake need a mate?Slide11

Essentially two rakes operating against each other in a clamping fashion.

The Rake-MateSlide12
Slide13

Rake-Mate sequence