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==D.I.Y==
==D.I.Y==
{{How to
{{How to  
  |title=How To Build An Earthen Oven
  |title=How To Build An Earthen Oven  
  |File:Newell_brickfooter.jpg |Brick Footer |1 |Mortar three layers of red bricks onto the foundation.
  |File:Newell_brickfooter.jpg |Brick Footer |1 |Mortar three layers of red bricks onto the foundation.
  |File:Newell_stacked_urbanite.jpg |Stacked Urbanite |2 |Stack urbanite within the footer to reach the desired height (about 36"). At the top of the stack, create a perimeter from urbanite that will be filled in.
  |File:Newell_stacked_urbanite.jpg |Stacked Urbanite |2 |Stack urbanite within the footer to reach the desired height (about 36"). At the top of the stack, create a perimeter from urbanite that will be filled in.

Revision as of 05:43, 3 December 2012

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Newell oven 2.jpg

Abstract

The objective of this project is to build a sustainable, beautiful, safe, long-lasting, and functional outdoor oven for baking and cooking. The project will be a collaborative effort including Laurel Tree Charter School, its students, Humboldt State University, our team, and the community to demonstrate the ability to apply sustainable practices by designing products for use in daily life.

Background

The Cobb Goblins were commissioned to design and construct an earthen pizza oven for Laurel Tree Charter School. Laurel Tree's mission is to create a sustainable model of education which provides all students with accessible curriculum, based on college preparatory standards, while developing life and socials skills in a mixed age setting.

Problem Statement and Criteria

The purpose of our design is to create a low embedded energy, natural, beautiful way to cook pizza. The oven will be used weekly for children's pizza lunches and for the occasional fundraiser. The table below shows the criteria created by our team and Laurel Tree. These criteria were weighted to help choose a design that fit the client's needs effectively.

Criteria Importance
Safety 10
Construction Time 10
Effectiveness 9
Durability 8
Usability 7
Sustainability 7
Aesthetics 6
Student Involvement 6
Cost 5

Description of Final Project

Figure 1: CAD Drawing of Oven Layers
Figure 1: CAD Drawing of Oven Layers

Oven Layers

Inner Thermal Layer

This layer retains heat from firing and radiates it back into the oven chamber. The mixture recipe for this layer is 1 part clay, 1 part sand.

Insulation Layer

This wooly looking layer insulates the inner layer and keeps heat from dissipating into the environment. The mixture recipe for this layer is 1 part clay, 1 part sand, and 5 parts straw.

Outer Cobb Layer

The straw in the outer cobb layer provides the tensile strength need to make the oven sturdy. This layer is also useful for applying designs to the oven's exterior. The mixture of this layer is 3 parts clay, 3 parts sand, and 1 part straw.

Lime Plaster

Lime plaster is applied after the inner layers have fully dried. This layer protects the oven from the environment.

Materials/Costs

Newell costtable.png

Results

Ovenly Inferno is successful in producing ebough pizza for the whole school during lunch time. It requires 1 ft^3 of wood to fire it in 2 hours. The oven's peak temperature is ___*F and after cooking __ pizza's the temperature is ____*F. The counter space provides adequate preparation space and the fuel is kept close in the wood storage.

D.I.Y

File:Newell_brickfooter.jpg
How To Build An Earthen Oven

Discussion and Next Steps

References

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