Gravel Base

4 sections with 16’x16’ roof structure, posts with 14’ spacing

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Requirements:

*Kitchen to feed 24 people for now;

- Overall structure scalable

- Design on right does not

have scalable wastewater

- Greywater drainage scales

- In line extension of shower

is feasible

*Scalable for expanding in future

*4 showers and 2 bathrooms

*Seating area for 36

*Summer operation only

*Macerating toilets to facilitate wastewater plumbing ($850)

*Water system - freeze-proof hydrant conntction

Bathroom

*Framed 2x4 lumber

*⅜” plywood skin, painted

*Quick coupler on back (hydraulic or other)

*Traps with drain plugs

Kitchen

*Row of rodent-tight cabinets

*Rodent Tight Storage Closet

*Double sink

*1 fridge, one freezer

*Stove - for 4 large pots

*Dishwasher

*Water Quick Coupler

*100 lb propane tank

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Foundation: Roof

*4x4 treated lumber post and beam

*1 bag of Readimix per hole

*Augered with LifeTrac

*14 foot on center, 8 posts total

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Foundation: Platforms

*4x4 treated lumber post and beam, 4 foot centers

*2x6 spans, 12” on center

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Drainage

*Gravel bed for gravel runoff into drainage channel

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Shower Module

*Framed 2x4 lumber

*⅜” plywood skin, painted

*Quick coupler to water, no traps

Cabinets, Sink, Stove, 2 Fridges

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Rodent TightStorage

4’x8’

septic tank

Gravel Greywater Drainage

Floor Layout:

Connected, not

scalable

Floor Layout,

not scalable as

drawn

Concept 2: Modular Units

1000 sf floor plan

Gravel Base

4 sections with 16’x16’ roof structure, posts with 14’ spacing

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Requirements:

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*Scalability is prime design feature (swarming development) for future growth from 12 to a population of 100 (Uniform Plumbing Code - 1 shower/WC per 8 people for college campus)

*Camping holds many people, stable housed population grows as number of MicroHouses increases

*Open air, 3-season structure

*Peak use in summer

*Linear scalability is easiest scaling strategy

*Post and beam roof structure

*Car siding for attractive finish

*Utility connections: water and power for each module; simple plug-in via plug and water quick couplers

WC

*Framed 2x4 lumber

*⅜” plywood skin, painted

*Quick coupler on back (water for sink and toilet)

*Electrical connection for wall light with shaver outlet

*GFCI

Kitchen Strategy

*Walk-in storage (animal proof) on both sides serves as wind break

*C-shaped framed wall between roof posts

Foundation: Roof

*4x4 treated lumber post and beam

*1 bag of Readimix per hole

*Augered with LifeTracor manually

*14 foot on center, 8 posts total

*Bathroom platform sits on blocks

*Kitchen platform sits on blocks

- Connection detail needed between platform and C wall

Foundation: Platforms

*4x4 treated lumber post and beam, 4 foot centers

*2x6 spans, 12” on center

Drainage

*Gravel bed for gravel runoff into drainage channel

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Shower Module

*Totally independent; water quick coupler and electrical plug-in via campground outdoor plug hookup.

*Each module electical - light only

Cabinets, Sink, Stove, 2 Fridges

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Utility Space? Unconnected Kitchen and Bathroom for modularity

septic tank

Gravel Greywater Drainage

Outdoor Camping Electrical Plug

Rodent Tight Storage

4’x8’

Rodent Tight Storage

4’x8’

Shower

Shower Total

Sink - $36+

Sink - Amazon - $63

Shower stall - sheathing at $18, plywood $14, or cement board at $24/sheet

Shower Faucet - 2 ball valves - $5ea

Shower head with valve-in-handle - $18

Height-Adjustable Shower Head Mount - $9

½” 100psi NSF-14 Blue - $14

Freezeless Hydrant - $120

On Demand LP Heater - $340+

Slide Bolt Latch - $6

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Shower Concept

Build a Plug-and-Play summer module that can be scaled in number by adding modules in line. Curent OSE need is 2 more showers, but it will likely rise to 8 by next year. All plug-and-play connections are on back side (opposited the door). Frame is structural and can be built in a workshop and lifted into place via forklift, or build in place.

Shower Concept 2

Front View

Top View

4’x8’x8’, 2”x4” treated stick frame structure. ⅜” plywood skin. Skin is painted after assembly. Drain is treated lumber planks, painted. Front door- sliding bolt latch on plywood/2”x4” door

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6” gravel base with gravel trench for base

gravel trench

2x4 treated planks for shower drainage, then through gravel trench. Roof has 50% skylight.Fluorescent light for night.

• Rear of module has 1 electrical plug, 2 quick connect ½” water lines, and ¾” outlet.
• Each unit can be fabricated completely independently
• Designed for 1 day build time with 2 people
• Multiple modules can be built in parallel by multiple teams
• Scalable extensively
• Features: macerating toilet for facilitating blackwater plumbing via ¾” line discharge to septic system

Summer Camp Outdoor Showers

Kitchen

Wall mount faucet - $80

Stainless food prep sink - $265+

Fridge

Stove

Cabinets

Storage Pantry

WC

Sink - $36+

Mirror - $10

Macerating Toilet - $850+

Hand held bidet - $50

Grinder - $55

On-delay timer - $4+

Septic Tank - 1048

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Concept 3 - Going Hyper-Modular to integrate with CEB Construction

• Now panelize all wall, floor, and roof components.
• Standard stick framing with plywood face
• 4’x8’ standard size panels; 12” trusses handle 12’ span
• Use framing studs to maintain height at 8’
• Set on 12’ centers
• Create door, window, floor, shower, sink, kitchen, and bathroom panels; quick connect utilities.
• Paint entire assembly beforehand
• Interoperable between CEB and stick-frame construction, allowing temporary space to be created
• Panels usable as scaffolding, tables
• Deployable on day timescale, and panels completely reusable/reconfigurable
• Connection system allows reuse. Simplest is a metal edge corner bracket.

Cost

• Treated: Lumber with ½” plywood - [4] $3 + [2] $28 = $68 per panel
• Untreated: Lumber with ⅜” plywood - [4] $2.77 + [2] $14.2 = $40.4 per panel
• Roof - 2”x8”x16’ -[11] $11.57 -
• Roof - 2”x8”x8’ - [9] $5.19
• Roof - 2”x6”x16’ - $11.69 -
• Roof Treated - 2”x6”x16’ - $11.42
• Roof Treated - 2”x8”x16’ - $16.19
• 2x12s - 16’ - $23
• 2x10x16 - $13.71

Immersion Learning Workshop - Carpentry, Plumbing, and Electrical

Carpentry:

• Stick Framing - miter saw, skil saw, jigsaw, table saw, drill. Modular design.
• Leveling
• Post-and-beam foundations - post hole auger + cement technique
• Roofing + daylighting
• Structural design and beam spacing

Plumbing:

• Uniform Plumbing Code
• Sink, shower, toilet, faucets install
• Water heater installation
• Greywater drainage
• Septic system connection, venting

Electrical:

• National Electrical Code
• Breaker Panel Connection
• Ground Fault Circuit Interruptor
• Lights and power outlets

Insulated Modular Structure

Walls

• 4’x8’ panels made from 2x4 lumber - wall, window, door, breaker panel, garage door (double door), sink, bathroom, kitchen sink, electrical, GFCI electrical
• Lights and power outlets pre-wired into walls; walls plug in

Ceiling

• 4’x12’ panels, 2”x10” lumber, R30 in ceiling - zone 5, nonresidential - 2”x10” lumber
• Underside - ⅜” plywood
• ¼” OSB for top surface above insulation - $7.55/sheet

Roof

• 3’x12’ panels - 12’ span on 18” centers - 2”x6” lumber from span table
• See also span calculator
• Use 2”x8” - cheaper than 2”x6”
• Roof is for water, wind, and snow loads only

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Modular Structures: Interface Design (Joints)

Panels to Floor

• 4’x8’ panels - treated lumber base, anchor bolts in concrete

Walls (Panels to Panels)

• Seam is fiberglass insulation
• Screwed together tight
• Screwed down to base lumber
• Caulked at seams with outdoor caulk

Ceiling To Walls

• 4’x12’ panels - screwed on top of walls and toe-nailed into one another
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Roof

• 3’x12’ panels - 12’ span on 18” centers - 2”x6” lumber from span table
• R30 for roof - zone 5, nonresidential - 2”x10” lumber
• 1’x12’

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Modular Structures: Ceiling Detail

Ceiling To Walls - top view

• 4’x12’ panels - screwed on top of walls and toe-nailed into one another
• Designed for Replacement of 4’x8’ panels in situ

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wall

N

extra 2”x8”x10’ lumber

extra 2”x8”x16’ lumber

2’ overlap

sample ceiling panel (4’x12’)

Modular Structures: Ceiling Detail

Order of Ceiling Build:

• Screw down first panel (toenailing from bottom to allow in-situ disassembly)
• Screw 2 corners together first to pinch in gap between panels

Build Parallelization:

• 4 groups can work on this, 1 per corner (16 people)

Gap Sealing:

• Use thin fiberglass insulation bats between panels and under panels to address heat retention
• +/-1” tolerance can be accommodated over 60’
• To fit, must adjust outer N edge of panel to face of wall
• This indicates that a 7” gap will remain in middle section if build happens from 4 corners. Gap may be widened to 14”
• That’s a great way to implement a skylight for daylighting. N-S location may be adjusted as needed

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• E-W gap may also be used as daylighting - use double layer of clear plastic for that.

wall

N

sample ceiling panel (4’x12’)

sample ceiling panel (4’x12’)

Modular Structures: Ceiling Detail

Build Parallelization:

• Skylight is formed in middle (number of panels not to scale)

sample ceiling panel (4’x12’)

Walls Detail

Carpentry:

• 2”x4” lumber

Roof Detail

Carpentry:

• 20 psf wind load or snow load
• 7.1 degree roof angle
• Skylight
• 12’ panels
• Seam between roof panels covered by 6” overhang of roof metal

Equipment

Bays

(16’ roof panel)