1. Biochar Concrete Roofing Sheets for Nicaragua
Design Review 1
Cindy

2. Agenda Team Introduction Project Background Problem Statement
Additional Deliverables
Use Scenarios
Customer Requirements
Benchmarking
Engineering Requirements
HOQ
Risks
Project Plan
Concerns
Next Steps
Cindy

3. Team Intro and Roles Peter Chynoweth - Mechanical Design Lead
Jamiya Cook - External Project Manager
Adrian Izbicki - Materials Design Lead
Cindy Widergren - Internal Project Manager
Cindy

4. Project Background: Nicaragua and 4 Walls
El Sauce, Nicaragua
Largest country of South America
Rural “cowboy” small-town atmosphere
High unemployment, primarily agricultural, has growing opportunities for economic development
4 Walls
Help families obtain their homes
Build a potential small business for some people in Nicaragua
Jamiya

5. Project Background: Biochar
Made from many types of biomass including agricultural wastes
Being tested as a component in building materials and are starting to test biochar amended with concrete
Used to improve humidity control and could potentially have many other benefits
Ithaka Institute - non-profit foundation that researches biochar
teamed up with 4 Walls to see if roofs could be made from biochar
Peter

6. Project Background: Biochar
Peter
Info: Biochar is created by the thermochemical decompositions of organic materials at elevated temperatures in the absense of oxygen. This process is called pyrolysis

7. Problem Statement Current State Desired State Project Goals
4 Walls builds homes in Nicaragua but the roof construction is not optimal
Desired State
Create roofs that are less expensive, made of local products, quieter in the rain and do not create a large solar gain by utilizing biochar
Project Goals
Analyze current roofing design
Design a biochar roofing that can be made and repaired locally
Constraints
Roof must be able to be built with local materials and tools for less than $400
Adrian

8. Deliverables Working Roof Prototype Test Documentation
Molds for Manufacturing
Material Mix (Biochar/Concrete)
Instructions for Installation
Schematics/Design Models
Adrian

9. Use Scenario: Construction of the Roof
Adrian

10. Customer Requirements / Interview Insights
Adrian

11. Installed Cost per sqft ($)
Benchmarking
Cost ($/sqft)
Weight (lbs)
Installed Cost per sqft ($)
Lifespan (years)
Modularity (sqft)
Wind Resistance (mph)
Metal Sheets 1
1.5 7 50 42
140
Tar Tiles 2
1.20 20 3
110
Clay Tiles
2.50 10 4 45
*Benchmarks are in America
Peter

12. Engineering Requirements
Peter

13. House of Quality
Compared customer requirements to engineering requirements
Cindy

14. HOQ Insights Most important ER: Total Cost Keep cost down
Number of Skilled operators
Time to install roof
Takeaways:
Keep cost down
Keep installation simple
Tradeoffs:
Add more desired features, increase cost
Keep in mind roof weight, dimensions, ability to hold a person, decreases install time
Cindy

15. Risks
Cindy

16. Current Project Plan and WBS
Jamiya

17. Concerns Having our first meeting with one of our main customers today
Will have to ensure that all of the previous work aligns with their requirements
Jamiya

18. Future Plan
As a team, where do you want to be in three weeks at your next review?
Developing Alternatives
Concept Selection
Functional Analysis
Feasibility Analysis
Risk Assessment
Test Plan
Each individual team member has certain action items before the next review
Jamiya

19. Questions?