Seed Home v2 Data Collection

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Notebook Data Collection Snapshots

Here.

Development Time Comment

  • Former builds - 50 people*80 hours - 1 workshop - 4000 hours
  • 30 people * 40 hours = 1200 hours
  • 2 full person years direct development - 4000
  • 1 full person year background - 2000
  • Ancillary systems and machines - 1 full year of development time - 2000

Total - 13.2k hours of development.

Why large scale development is needed? - and the reason is that it takes tremendous effort to deliver the above stated goal. In practice, the Extreme Enterprise Manual can only set a pattern for one house model, but with the information provided, other models can readily be derived. First model will require about 40,000 hours of development/documentation to give it full digital scalability. Each additional model will probably require 1000 hours of development. The numbers add up to 24 hrs*2000 people = 48000 hours, where 1000s of hours (estimated time spent already is 8000 hours to get to the design core).

Total Time Budget

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Wall Panel Predictions

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Stain

  • Jarrah Brown - 9.2 panels sprayed per gallon, full strength.
  • 60/45 PSI setting on both guns. 60 PSI initial, 45 PSI during spray
  • Both guns on Ingersoll Rand gas compressor, 1 gas tank for 8 hours, about 2 quart?
  • Initial panels - 52 minutes to stain. Have to brush them off before spraying.

2 handed spraying with an Ingersoll Rand compressor, 60 PSI with 45psi trigger pressure using the famous Harbor Freight Purple Guns and 32 oz gravity cups. https://www.harborfreight.com/20-oz-h...​. Strained with 60 mesh strainer. https://www.harborfreight.com/pack-of...​. Disclaimer: Harbor Freight is not paying us to advertise their wares.

Works well in sub-freezing weather as in the video. Each gallon of stain covers 9.2 panels. 18 seconds of video at 3 second time lapse interval means 27 minutes of video - or 1 panel stained with Jarrah Brown color every 9 minutes. Includes time to brush panels off with broom, as there is sawdust on these rough cut exterior panels, and time includes straining stain and moving panels. For an entire Seed Eco-Home 2 with 48 of these panels (1536 square feet of panels), that would be 7.2 hours for exterior stain at this rate. Is that good or can we do better?

Spraying Tests

  • Note: latex, and acrylic 35F rated with addition of Floetrol, does not spray through HVLP gun. It does not even strain through 70 mesh at 35F.
  • Settings on The Purple Harbor Freight Gun - full throttle on fan, minus until it starts to reduce diameter
  • Water cleaning results - good results.
  • Diesel cleanign results - point is to keep a little oil in the gun to prevent rust. Good. Just pump it.
  • Spraying rate - for water at 40 PSI regulator. 350 ml in 2:31 minutus. 1000 ml is 33 oz. 3 oz/min spray rate, looks like. About 5 minutes per small 20 oz stock cup, about 8 minutes per 33 oz 1 l cup.
  • Pure walnut for indoor, pure brown for outdoor. No thinner.

Spraying

  • Prep - cleaning shop and laying out all of the inteerior plywood - 53 sheets - started about 2 pm, and finished 5:10.
  • Typical camera settings for timelapse - 1 second for the time data videos.

Data

Final Foundation Result

  • Length to outside of insulation -
  • Length to inside of insulation -
  • Lengths of diagonals to outside of insulation -
  • Z difference on 4 corners and in mid point of long side -
  • Location of plumbing hole -
  • Actual locations of anchors (from outside of foundation)

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Grading

  • Ample time spend preparing solar power stations for 3 cameras, and making outdoor industrial tripods for cameras for wind and weather and long-term timelapses.
  • 7.2 hours machine time on Takeuchi rented tracked 72 hp 8000 lb traction bobcat to grade a pad to +-2". Pad size - 32x64 feet including garage and 8' outer perimeter for scaffolding and drainage later.Additional time marking, clearing with chainsaw, etc. One day of LifeTrac with initial clearing and moving logs.

Moving Gravel

  • 26 minutes staking out the new 32x16 location for Rosebud, for actual foundation.
  • 1:07 hr moving gravel from load dump to middle of foundation. Note that this could have been done on the spot with the gravel truck, if we got the dump truck here after the foundation pad was graded.

Preparing Foundation Forms

  • 2:15 hr - Form Lumber prep. Making and sharpening 68 stakes (12 extra) from 2x2s, combining 2x8x8 to 2x8x16 (only 3 were 16s), cutting 28 supports, and making a 16' gravel screed board. Collecting spacer boards for putting under foundation.

Installing Forms

  • 0:38 hr - making 32x16 box. 2 joints made. 1 mistake - joined on wrong side of board where extension was made of two 8 footers. Also, one 16 footer had an extra joint, which was taken off.
  • 0:08 hr - Laying out all support boards and stakes next to box.


Monday

Day of Pour (Tuesday)

  • Started at 9:00 AM, so total hours MJ were 11:30. Final cleanup of trench for 15 minutes. Cutting and bending rebar. Unloading the remesh (nighmare out of van as it gets stuck all the time). 9:28 MJ Day of Pour - trench, rebar, spread + screed gravel, pour, and trowel for about 2 hr more than Gary
  • 5:00 Gary (1:30-6:30) - rebar, polyethylene, pour, float and trowel
  • 3:00 Catarina - mudsill anchors, rebar, poly. Setting rough plumbing box level. Cutting wood blocks as remesh chairs, but they didn't really work.

Seed Home 2 Data Collection Plan

A part of our unique value proposition is a house that is easy to build, in a way that breaks the Iron Triangle.

The ease must be communicated well.

Ultimately, we say it takes X hours to build the entire house, at a cost of Y based on standard labor.

X and Y are to be the lowest in the industry, for replicable housing - not one-off projects.

Some of the numbers that we need to validate include details of the main build, outside of foundation, which is done typically by a helical pier contractor.

Links