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Design Concept: Microhouse

Shed roof with loft - borrow Microhouse 1 Design

Review - shed roof works well
Review - loft works well

Loft Platform - modular design for swarming

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Wood Requirements

Ladder

Loft

Bond Beam

Roof

Secondary Bond Beam

Roof frame for hanging tin
Bond beam forms (reusable)

Secondary bond beam (recycles bond beam forms
(loft is CEB as well)

Loft + loft hanger
Ladder
Window framing
Door framing

Loft Hanger

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Roof BOM

[11] 2x6, 16’ long
Is 6” overhang acceptable? If so, 4 sheets of 47.25 roofing = 15.75’...
3 seams of 3”

2x6 lumber, 16’ long

2’ on center

14’9”

16’ 3” 15’

16’

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Roof Metal

[10] 2x6, 16’ long
Is 6” overhang acceptable? If so, 4 sheets of 47.25 roofing = 15.75’

2x6 lumber, 16’ long

2’ on center

15’

16’

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2. Bond Beam BOM

BOM:

[4] 2x6, 14’ long
[4] 2x6, 12’ long
Bond beam evens out the top
Use 2x6 lumber, bond beam is 3” thick

14’

2x6 lumber

Forms are drilled into upper CEB layer

12’

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Modular Loft

2x6 header
6’ wide, 12’ long
Lays on top of 2x6 support screwed into CEB prior to stucco
Support board is mounted after mesh, prior to stucco

6’

2x4 lumber in green

18” centers

2x6 lumber in red

Loft support screwed into CEBs before stucco

Length will be 12’ minus thickness of stucco coat (⅜ on each side)

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3. Loft BOM

[4] 2x6, 12’ long
[7] 2x4. 6’ long

Detailed:

[2] 2x6, 12’ long
[4] 2x6. 6’ long
[7] 2x4. 6’ long

6’

2x4 lumber in green

18” centers

2x6 lumber in red

Loft support screwed into CEBs before stucco

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4. Ladder BOM

[3] 2x6, 9’ long

Rungs are [6] 2x6. 1.5’ long

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Window Concept Builds upon Microhouse 1

1 upper window,

but on back (ventillation)

2 front

windows

1 side

window

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Window Concept

1 upper window,

but on back

(ventillation)

2 front

windows

1 side

window

Back door to kitchen

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Window Framing 1

To frame window, put in window frame (2x12) while laying block
Put mesh around window frames when doing the reinforcing mesh

block

Mesh everywhere

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Window Framing 2

Insert window with trim into aperture Before stucco
Screw trim into wood, pinch down meah with trim

block

Then stucco, usin trim as limit of stucco:

Window

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Window Materials

Get window made with trim as discussed here so we can screw the window into frame
Wood required depends on the size of windows, but each frame is essentially 4 sides of 2x12 lumber so lumber goes flush with CEBs:
Door framing - depends on door design, but is likewise a box with2x12 sides

Get door made so we can hang it on the frame using trim just like windows?

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Floor

Shed roof with loft - bprrow Microhouse 1 Design

Review - shed roof works well
Review - loft works well

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CEB House Cost Prediction in Belize v2

Vapor barrier + sand base

Foundation - 15% Cement SCEBs, 5” tall - concrete+rebar

Gravel Base - 9” 6” thick, 20’x20’ ( 11.1 cu yd). Packed down hard.

12% SCEB, 5” tall for foundation, 96 block needed at, 41 cents/block. $40 total.
Windows and doors are inside frames wrapped in lath
Stucco - 3 lb/sf or

Door

Windows, 3

Sink

Shower

Stove - CEB

Prewire Electrical

Prewire Plumbing

$375 $250

$40 $212

$170 + 85

4 Frames

$165

$80

Floor - 288 SCEB at 5% stabilization

$32

Acrylic stone sealer for floor

$122

2 X $15 + 50

$180

Fibalath, 512 sf = $400

Or 17 ga stucco wire (¼ cost)

Site Grading - 4 hours. 1 gal/hr gas. $75 + $40 + $25 labor

$140

$100

Bond Beam - 4”x12” rough lumber, lath wrapped around it. Concrete Bond Beam

$180

Shed Roof - 2x8 rough lumber, 16’ long, 2’ centers

Fibalath, 512 sf

Or 17 ga stucco wire (¼ cost)

$150

Tin roof

$320

$250 screws

$25 screen (100 sf)

$100

$200

$100

$4127

$200

Stucco

800 sf

$80

$300

Truckload of soil for SCEB

$120

Digging soil for SCEB from site

$220

10 Pallets

$96

Tractor operator for soil loading or

14 workers

Does not include forms for laying the bricks against

Walls, Bricks, 8 sections + 4 sections for patio

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BOM Details

Critical Tools

1200-1800 sf chicken wire - 2 rolls of this - or 3 rolls if we do CEB loft

Or 17 ga stucco wire if not chicken wire

CEB floor - 4 mil poly - 1 roll 6x100 feet
Electric fence wire - we can use this for cross ties for the wire mesh - 1320 feet

Electricity access
[2] Wood cutoff saw for lumber
[2] Circular saw - for cutoff, etc.
[12] Cordless drills (good to have 24 total)
[4] Corded drills - backup for mud slurry, drilling
[20] hard hats
[20] gloves
[20] eyewear