View source for OSE Microhouse Prototype Build

Linked from [[OSE Microhouse]] [[Image:microhouse04.jpg|130px]]. Page edited by [[Image:marcinted.jpg|80px]], initial design by [[Image:cohabitatlogo.jpg|80px]] [[Cohabitat Group]] and final design by [[Chris Reinhart]] with adherence to [[Image:oshwalogo.png|60px]] and [[Image:logobw-vector.svg|100px]]. To be built with [[Image:CEB Press.png|80px]] [[CEB Press IV]] supported by [[Image:Tractor.png|50px]] Prototype IV, [[Image:Sawmill.png|50px]] Prototype I, [[Image:Rototiller.png|50px]] Prototype III, [[Image:Power Cube.png|50px]] Prototype V and VI, [[Image:Backhoe.png|50px]] Prototype I, [[Image:Trencher.png|50px]] Prototype I, industry standard [[Image:Baler.png|80px]] and industry standard [[Image:Chipper Hammermill.png|50px]].

=Results from 2013=

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<iframe src="http://blog.opensourceecology.org/2013/10/architecture-lead-joins-the-ose-team/
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=Ergonomics Concept=
We want to press bricks realtime and lay directly into walls. Our goal is to demonstrate that we can produce and lay 5000 bricks into a 400 sf structure in one day with 12 people laying bricks in 4 teams of 2 and another 4 people sliding the blocks on the rollers. Another carpentry crew of 8 breaks into 4 teams that make windows, doors, and roof sections. Another team of 4 inserts the mechanical unit, and the final team of 4 mixes and sprays stucco with a slurry sprayer. So a team of 2 dozen is needed for one day. Foundation is prepared beforehand. Start at 8 AM and press until 5 PM with 1 hour break. Begin roofing at 7 PM and finish at 9 PM including stucco.

=Introduction=

Factor e Farm is building a prototype Microhouse to demonstrate and document the efficiency of building [[Compressed Earth Block]] structures - in order to demonstrate the robustness and efficiency of the CEB construction method. We are considering CEBs as a scalable, high-performance method for building OSE infrastructure - consistent with our [[Strategic Plan]].  

We will make a comparison to stick-built methods. We are documenting the time of construction. Compared to stick-frame construction - we are designing for:
#improved thermal performance (both heating and cooling)
#comparable cost
#use of local material sourcing (block + insulation)
#longer lifetime 

We will be building a minimalist 12'x12' structure to demonstrate the building techniques - while documenting the process in full technical detail:
#Step by step procedure with diagrams prior to build
#Time required for each step of the build
#Comprehensive cost including materials, labor, and others
#Bill of materials with links to sourcing
#Step-by-step video instructional with technical script

=Design Discussion=

Discussion between [[Floyd Hagerman]], professional CEB builder, and Marcin Jakubowski.

<html><iframe width="300" height="169" src="http://www.youtube.com/embed/2itc2Lun9CU" frameborder="0" allowfullscreen></iframe></html>
Notes:
*Spread Footer: 1:50
*Wall 14" wide - double wall with thermal breaks, see [[Earth Sheltered House and Double Wall Brick Laying with Thermal Break Video]]
*2:30 - gravel base, 
*2:50 - pea gravel - 6" wider than footer

=Design Rationale=
*Breakthrough cost to performance ratio by [[DIT]] [[Collaborative Production]]. Goal: $4/sf.
*Breakthrough construction time: 2 days with 5 people for every 300 square feet of house space for modular structure
**Preframed door, window, roof. mechanical/kitchen units.
*Modular structure, additions can be made on-demand
**Modular window and door units
**Modular roof structure - long, interconnectable panels with possible skylight.
*Wall-integrated Stove
*CEB Floors
*Double CEB Walls insulated with hammer-milled straw
*Built-in winter-round greenhouse
*Locally milled lumber - after Phase 1

=Design=

==Specifications and Build Plan==
*Phase 1: Build foundation for a single free-standing unit of 12'x12' size. Structure has electricity and a provision to connect a water line in the future (water line stubbed out under house skirt insulation. At this phase, no provision for interconnecting further additions to this structure need to be made.
*Build 12'x12' living structure - CEB floor, built-in wood stove, electrical connection
*Siting is north of HabLab
*We are intending to use the tractor, brick press, and industry standard hammer mill (needs to have hydraulic motor and base stand mounted still) for chopping hay insulation
*Phase 2: Building an independent next module - a greehouse module - separated by 8 feet with covered walkway. Allow for water and electrical connection.

==Foundation==

See also [[Shallow Insulated Footer]]

<html><img src="https://docs.google.com/drawings/pub?id=1PEe1g7aI1IiCZoawD2eqlH801-Lo_TVddrNGO3BW39U&amp;w=480&amp;h=360"></html>

[https://docs.google.com/drawings/d/1PEe1g7aI1IiCZoawD2eqlH801-Lo_TVddrNGO3BW39U/edit edit]
*Shallow insulated footer technique. Works for heated structures to prevent frost heave.
*Inside - poly goes under footer
*Outside - poly goes up footer and under insulation

==Walls==
<html><img src="https://docs.google.com/drawings/pub?id=1yYNxQCJ1N3SchRZWlgM5QSktEz3oJYfi2jb0RRQTgVI&amp;w=400&amp;h=300"></html>
[https://docs.google.com/drawings/d/1yYNxQCJ1N3SchRZWlgM5QSktEz3oJYfi2jb0RRQTgVI/edit edit]

<html><img src="https://docs.google.com/drawings/pub?id=136hBQfHJHrqvNY1Ut4cjAKe1_tN1DGtNqAuh4aORzHQ&amp;w=480&amp;h=360"></html>
[https://docs.google.com/drawings/d/136hBQfHJHrqvNY1Ut4cjAKe1_tN1DGtNqAuh4aORzHQ/edit edit]

==Door and Window Detail==
<html><img src="https://docs.google.com/drawings/pub?id=1RVHg-vw3RsF8y2U9J9xGuAWCQuWIBTLjKhV26gqIHdE&amp;w=480&amp;h=360"> </html>

[https://docs.google.com/drawings/d/1RVHg-vw3RsF8y2U9J9xGuAWCQuWIBTLjKhV26gqIHdE/editp edit or comment]

<html><img src="https://docs.google.com/drawings/pub?id=1MUI2TOdFUL9RK3hXqQkWqV_mNmY3GD7xXoRqcmf8NIs&amp;w=480&amp;h=360"></html>

[https://docs.google.com/drawings/d/1MUI2TOdFUL9RK3hXqQkWqV_mNmY3GD7xXoRqcmf8NIs/edit edit]

==Mechanical Unit==

==Cost Structure==
*Cement footer: $100/cu yd
*Insulation: $35/sheet of 2" pink board for skirt - 6 sheets per unit - $200

<html><iframe width='500' height='300' frameborder='0' src='https://docs.google.com/spreadsheet/pub?key=0Av4ZjQn4DHJHdF9kUVBVSkVodFNYc0xEc2xFc2xBYmc&output=html&widget=true'></iframe></html>

[https://docs.google.com/spreadsheet/ccc?key=0Av4ZjQn4DHJHdF9kUVBVSkVodFNYc0xEc2xFc2xBYmc#gid=0 edit or comment]

=Design Proposals=

[https://docs.google.com/open?id=0BwxMMqGvwTM-ZEtKUEJBeW9FSWs sketchup - brick theory]

[https://docs.google.com/file/d/0BwxMMqGvwTM-UDRXZk5ZbzZzVkU/edit?usp=sharing sketchup - gable roof]

=Calculations=
*Footer: 18" wide, 1 cubic foot of concrete per foot of double wall foundation

=Build=
First, go to [[Image:school.jpg|75px]] on the above.

=Links=

*[https://docs.google.com/a/opensourceecology.org/document/d/1wtMUoUbSROLhFG39vjORIYRLeQiM1sYv043Q9JmPtd0/edit Aug 6, 2013 Support Equipment Discussion for Microhouse] - internal document to build participants due to POC list
*Wall Details from Cohabitat Group - [[Microhouse_Architectural_Details]]
**Includes download of MacroHabitat - a CEB house designed by Paweł Sroczyński for OSE.
*Wall Details from Floyd Hagerman - [[HabLab Build]]
*[[OSE_Roof_Instructions]] - instructions for modular flat roof sections
*[[How to Build a Brick Wall]]
*[[CEB_Architecture_Plans]]
*[[Open Source Architecture]] - TED Talk
*[[Open_source_strawbale_design]]
*http://en.wikipedia.org/wiki/Passive_solar_building_design
*http://energy.gov/energysaver/articles/passive-solar-home-design

[[Category:Housing and construction]]
[[Category:Microhouse]]