OSE Microhouse Prototype Build

Linked from OSE Microhouse . Page edited by , design by Cohabitat Group with adherence to and . To be built with CEB Press IV supported by Prototype IV, Prototype I, Prototype III, Prototype V and VI, Prototype I, Prototype I, industry standard and industry standard .

Design Discussion

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
• Wall-integrated Stove
• CEB Floors
• Double CEB Walls insulated with hammer-milled straw
• Built-in winter-round greenhouse
• Locally milled lumber

Design

Foundation

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• 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

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Door and Window Detail

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Cost Structure

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

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Calculations

• Footer: 18" wide, 1 cubic foot of concrete per foot of double wall foundation

Build

First, go to on the above.

Links

• 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