P14415: Plastic Arborloo Final Review Patrick Morabito Samuel Svintozelsky Nathan Conklin Michael Coffey John Wilson
Agenda ● Background & Motivation ● Engineering Requirements Overview ● Vacloo Final Prototype ● Vacloo Mold and Build ● Vacloo Testing ● Deckloo Final Prototype ● Deckloo Testing ● Fixtures ● EPA ● Conclusion ● Assessment (Team and MSD)
Background and Motivation Inadequate sanitation is a major cause of preventable illnesses in children around the world. According to UNICEF, diarrhea alone causes over 1.5 million deaths in children under 5 . These illnesses can easily be prevented by improving sanitation. However, cost is a major barrier limiting the adoption of sanitation in Haiti. Peter Morgan’s Arborloo is a simple latrine built over a small pit, which when filled is then moved to a new pit location. The old, filled pit then has vegetation planted on top of it, such as a fruit tree.
Project Goal Design a low cost, plastic, portable, easily constructed, modern looking, and safe to use arborloo base to be used in rural Haiti to improve sanitation.
Engineering Requirements
Critical Engineering Requirements
Design 1 - Vacloo Vacuum formed plastic sheet inserted over rebar support layout. Covered by High- Density Polyethylene cover and lid. Assembled product installed 2-3 inches below ground level to secure rebar.
Design 1 - Vacloo Mold Rev 2 Mold Rev 3 Mold
Design 1 - Vacloo Vacuum Forming Vacuum forming at RIT Vacuum forming at Faro Industries -0.25in HDPE - 0.0625 - 0.125 in HDPE - Rev 2 Mold - Rev 3 Mold - Results unsuccessful - Results successful
Vacloo Testing Highlights ● Vacloo loaded to 572 lbs ● Vacloo costs $19.61 per assembly in lots of 100+ ● Vacloo satisfied 13 of 14 engineering requirements
Design 2 - Deckloo 100% Recycled High-Density Polyethylene plastic lumber boards attached together by cross member supports. Includes cover attached by inner tube strips.
Deckloo Testing ● Deckloo loaded to 572 lbs ● Deckloo costs $40.91 in lots of 100+ ● Deckloo satisfied 12 of 14 engineering requirements
Testing Results
Failed Tests ● Vacloo - Failed tripping hazard spec due to lid knob ● Deckloo - Failed tripping hazard spec due to lid knob ● Deckloo - Failed maximum hole size spec
Rebar Fixture
Deckloo Fixture
EPA P3 Design Expo ● Washington D.C. April 25- April 27 ● Presented work to EPA judges and public in hope to receive additional funding ● Earned Honorable Mention
For the Future! There are still 2.8 billion people without proper sanitation! ● Use EPA Honorable Mention to go for funding of future Arborloo projects ● Improve Deckloo fixture ● Assemble more Deckloos with leftover recycled plastic lumber ● Pursue all plastic Vacloo design
MSD Assessment Recommendations: ● Design restricted by material and by concept ○ More creative solutions to problem possibly stifled ● Right for MSD? ○ Technical challenge ○ Humanitarian Passion ● Just provide powerpoint slides for the elevator speech in lieu of lecture ● Longer Phases-more time for project and less time working on presentations ● More in class time to work in MSDI ● Two column formatting for the technical paper ● Make the tables lower in the MSD room again
Conclusion ● Successful design of lightweight cost effective pit latrine systems ● Possibility for further development ○ Vacuum Forming in Haiti? ● More Critical Reviews of team member’s work
Acknowledgements We’d like to thank: ● Sarah Brownell ● Dr. Brian Thorn ● Pedro Cruz-Dilone ● Kevin Gebo ● Rick Auburn ● The Mechanical Engineering Department Machine Shop Faculty and Staff ● Faro Industries
Questions?
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