Re:19 Days & Counting
Re:Site Plan
So after considering the last scheme and (with Kate's help) coming to the realization that the benches and stands were 18m away from the field... I re-considered the layout. Same idea as other schemes we have come up with some idea of tranformability.
Re:Rainwater Harvesting
Here a some great links:
http://www.rainwaterharvesting.org/urban/Components.htm
http://www.eng.warwick.ac.uk/DTU/pubs/wp/wp55/index.html
http://www.solarengineering.co.za/rainwater_htm1.htm
So this is what I figured based on what we have so far:
Water collected per:
Year: 1125 m2 (area of roof for small field) x .825 (ave rain fall for Somkhele) x .90 (efficiency) =835 m3
Day: 835.31/685 = 2.29m3 (2288.5 liters)
Person: 2288/20 (Liters/day) = 114 people
In our area the population is 200-300 people per km2... so theoretically we could supply enough water for about half the people in the area of our field (from what I read 1 Km is about as far as someone could carry enough water for each day (still three trips)). That is if you can collect all the water that falls with 10% runoff for contaminated water. I think there is also a lot of potential for that 10% that is not drinkable... such as weeping it into the field. Im workin on it.
I am also working on the barrel size based on the calcs above: here are two options.
Re:Material Considerations:
check out this link for great gutter suggestions:
http://www.eng.warwick.ac.uk/DTU/pubs/wp/wp55/8technology2.html
There is a great example of a plastic tarp with thaching over it.
Also: I looked up 4mm plastic sheeting... it is basically the equivalent of plaexi-galss. Im not sure if that is what we are really looking for. Sheet metal while not a great option will provide a 90% efficiency that we a re looking for for water collextion. I also looked for product/cost info about the roof membrabrain (fabric) idea I had last weeked without much luck. So basically Im no help.
Re:Presentation Materials
With 19 days left we really need to start making some decisions and run with them. I would like to also include a 3d axon diagram of our water collection system if we have time. Talk to you guys tomorrow!
So after considering the last scheme and (with Kate's help) coming to the realization that the benches and stands were 18m away from the field... I re-considered the layout. Same idea as other schemes we have come up with some idea of tranformability.
Re:Rainwater Harvesting
Here a some great links:
http://www.rainwaterharvesting.org/urban/Components.htm
http://www.eng.warwick.ac.uk/DTU/pubs/wp/wp55/index.html
http://www.solarengineering.co.za/rainwater_htm1.htm
So this is what I figured based on what we have so far:
Water collected per:
Year: 1125 m2 (area of roof for small field) x .825 (ave rain fall for Somkhele) x .90 (efficiency) =835 m3
Day: 835.31/685 = 2.29m3 (2288.5 liters)
Person: 2288/20 (Liters/day) = 114 people
In our area the population is 200-300 people per km2... so theoretically we could supply enough water for about half the people in the area of our field (from what I read 1 Km is about as far as someone could carry enough water for each day (still three trips)). That is if you can collect all the water that falls with 10% runoff for contaminated water. I think there is also a lot of potential for that 10% that is not drinkable... such as weeping it into the field. Im workin on it.
I am also working on the barrel size based on the calcs above: here are two options.
Re:Material Considerations:
check out this link for great gutter suggestions:
http://www.eng.warwick.ac.uk/DTU/pubs/wp/wp55/8technology2.html
There is a great example of a plastic tarp with thaching over it.
Also: I looked up 4mm plastic sheeting... it is basically the equivalent of plaexi-galss. Im not sure if that is what we are really looking for. Sheet metal while not a great option will provide a 90% efficiency that we a re looking for for water collextion. I also looked for product/cost info about the roof membrabrain (fabric) idea I had last weeked without much luck. So basically Im no help.
Re:Presentation Materials
With 19 days left we really need to start making some decisions and run with them. I would like to also include a 3d axon diagram of our water collection system if we have time. Talk to you guys tomorrow!
posted by mbevivino at 2:43 PM
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