Biochar Concrete Roofing Sheets

for Nicaragua

Design Review 1

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

Team Intro and Roles

Peter Chynoweth - Mechanical Design Lead

Jamiya Cook - External Project Manager

Adrian Izbicki - Materials Design Lead

Cindy Widergren - Internal Project Manager

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

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

Project Background: Biochar

http://www.terralogix.net/biochar http://biochar.ucdavis.edu/

Problem Statement

Current State 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

Deliverables

Working Roof Prototype

Test Documentation

Molds for Manufacturing

Material Mix (Biochar/Concrete)

Instructions for Installation

Schematics/Design Models

Use Scenario: Construction of the Roof

Customer Requirements / Interview Insights

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 1 2 1.20 20 3 110

Clay Tiles 2.50 10 4 45 1.5 110

*Benchmarks are in America

Engineering Requirements

House of Quality

● Compared customer requirements to engineering requirements

HOQ Insights

Most important ER:

Total Cost

Number of Skilled operators

Time to install roof

Tradeoffs:Add more desired features, increase costKeep in mind roof weight, dimensions, ability to hold a person, decreases install time

Takeaways:

Keep cost down

Keep installation simple

Risks

Current Project Plan and WBS

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

Future Plan

As a team, where do you want to be in three weeks at your next review?

a. Developing Alternatives

b. Concept Selection

c. Functional Analysis

d. Feasibility Analysis

e. Risk Assessment

f. Test Plan

Each individual team member has certain action items before the next review

Questions?