~DJ’S Facility~William Wang

Ann-Sharlin EbelingSung Joon KimDa Jung Park

Water Usage

The average usage of water per person in India is 140 Liters.

It includes taking bath, washing dishes, drinking, and ect.

Table & Graph:Activity Average weekly use Litres used – per activ

ity

Bath 2 80 per bath

Flushing the toilet 35 8 per flush

Gravity shower 7 35 per shower

Power shower 7 80 per shower

Washing machine 3 65 per wash

Dishwasher 4 25

Watering the garden 1 540

Washing car with bucket

1(4 buckets) 8 per bucket = 32 litres

Washing car with hose pipe

1 400-480

Things we can take OUT:

-Washing Machine

-Car Wash

-Watering garden

Because people don’t need these following things to live.

Now the tables answer should be similar to the graph. (140 Liters per day)

~Calculations~ 140(±20) We set the uncertainty as 20 because we assume that adults and children

uses different amount of water.

140*3*50=21000L 140*4*50=28000L 140*5*50=35000L

And there are also some uncertainty between the families because every family can have different amount of people, some have 3 some have 4 or 5.

Depending on how many people is in the family there will be a uncertainty of 140L, because each person uses 140L of water per day.

Uncertainty in percentage:

20/140*100=14%

140*4*50*14=392000

We need 392000L of water for two weeks.

However Sung Joon found an information that 25% of their water usage is wasting. Therefore:

392000/100*75= 294000L

294000L is the amount of water we will provide them.

Calculations

1L=.003M^3294000L=294M^3Volume

~Grain Needs~

We found an information that says we need .25kg of rice everyday however, grains doesn’t not only include rice its every food.

We need 2800 calories everyday and 200grams=300calories.

Grain Needs

2800/300*200=1.8kgWe need 1.8kg of grains per person1.8*4*50=360kgWe multiplied by four because four is the medium of 3,4,5.It should be rare to have over five people in a family so we

decided the range would only be from 3-5people per family.

360*14=5040kg

~Getting the Volume~

Volume=mass/density

We got the equation by Mass=Density*volume

Density=.577

Volume= 5040kg/577

Volume=8.7M^3

Investigating Shapes Shapes we can use?- Cube ( rectangular prism )- Sphere- Cylinder

Decision

Circle is the shape that we should choose, because it doesn’t have any edges therefore it provides the biggest area.

However we can not choose sphere as our container even it gives the biggest volume because it can not be stabled, so cylinder would be a sensible choice.

Because the concrete is very expansive we need to make the cylinder higher and use less concrete to decrease the price.

Dimension, Water container

Water Volume=294m^3

Grain Volume=8.7m^3

Diameter Height Total Cost

1m 374.52m $16616.23

2m 93.63m $8682.11

3m 42m $6544.73

Dimensions for Grain

Diameter Height Total Cost

1m 11m $595.33

2m 2.77m $689.76

3m 1.23m $1166.03

~Decision~

Diameter over 1m should be all sensible because it is big enough for people to work in and it would be stabled enough.

However for the water tank we might decide to have 4 or 5meter for the diameter because it is too high if we use 2meter for our diameter.

4meter, height=23.40m5meter, height=14.98m

Five meter is the one we would choose because it gives people enough space to work, even though it is more expansive but 23m is a bit too high, therefore we decided to have five meter for our diameter.

Total Cost=$5901.15

Total Cost=$6084.82

Water storage DesignHere is how our water tank will look like, it has 5m for its diameter and 15m of height.

However the concrete part has been changed, it is 1m longer than the diameter to keep it more stabled.

We also increased the amount of metal sheet on the bottom to 2 because we are storing water and we need thicker metals to hold it.

Therefore we have a new cost:

$7668.50

Grain storage Design

We decided to have 2m for our diameter because 1m is too small for people to work in there, we wouldn’t want to go any bigger because the bigger our diameter is the higher the cost will be to construct the facility.

For this facility we also decided to have some extra concrete therefore our new cost will be:

$1192.41

Cost Our cost for our water storage is $7668.50

Cost for grain storage: $1192.41

Total Cost Our total cost for both facilities is $8860.91

We tried our best to keep the price as low as possible and keeping

the facility safe, easy to use and construct.

Bibliography

AnswerBag. 30 Nov. 2008 <http://www.answerbag.com/q_view/462516>.

Data360. 30 Nov. 2008 <http://www.data360.org/dsg.aspx?Data_Set_Group_Id=757>.

USwitch. 30 Nov. 2008 <http://www.uswitch.com/water/how-much-water-use/>.

Calories Per Day interview. 29 Nov. 2008.