Seed Eco-Home 4 Calculations
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Contents
Various Calculations Spreadsheet
- Concrete volume, materials lenghts, etc. - [1]
Build Time Spreadsheet
Build Time
- Foundation - 40 hr foundation with grading. 20 hours without grading. 4 hour backhoe, 4 hour gravel, 4 hr rebar, 4 hr staking, 4 hr forms.
- Modules build - 118 hours for 118 modules total. 60 + 18 garage for 1300 sf model. 40 interior modules.
- 10 windows at 2 hours. Rest is one hour average, easy. 108 hours + 20 hours. Including plumbing and electrical!. Total of 128 hours.
- Note that electrical and plumbing may involve up to a dozen components, from cut lists. The assebly station should include spools of wire and tubing, PVC stock, fittings, electrical boxes and devices. A dozen steps at an extra 3 minutes per means about 1/2 hour. For a typical 1/2 hour module - this translates to one hour - within the budget of wall module construction. As far as module stacking, interior modules with MEP can be stacked vertically for tansport.
- Data from [2] - 3 minutes per member, for 9 members - is a good conservative speed for a carpenter. Build time was 22 minutes with blocking + top/bottom available for these garage modules.
- Typical simple modules are 12 members, or 24 minutes
- Windows are ~20 members - 60 minutes for frame.
- 10 windows at 2 hours. Rest is one hour average, easy. 108 hours + 20 hours. Including plumbing and electrical!. Total of 128 hours.
- Joists - use Jig Tape premarked for joists. 3D printed blocking later - with recessed screw holes.
- Modules installation - 15 minutes per. See 1 Hour First Floor for data that says 6.3 minutes per team of 2, making it under 15 minutes per person. Thus the 15 minute estimate holds.
- Joists and floors x3. First floor, second floor (roof) and garage. 5 minute figure for joist and 4x8 sheet. 22+22+13 sheets = 57 sheets. Joists - 32+32+18=82. 139 total, with 5 min ea, is 695 minutes. 12 hours.
- Assumption of auto material delivery, Helper Tape
Devices
- Helper tape - premarked tape. $5. Green for first floor joists, red for second floor joists, blue for garage joists.
- Joist hoist
- Drywall Jack
- Winch system
- Power Ladder system
- Bump nailer
- OSB as the Arbiter
- Hole saw set
- Socket set
- Interior modules - prepped with MEP
Installation - 15 Minutes Per Wall Module
About:
- This process relies on quality controlled modules which are flat to 1-2".
- OSB Master already guarantees edges to be square.
- Leaning in or out - corrected at the top plate-setting level with string line between 2 corners. Braces released in the middle
Process:
- Clamp to bottom of next module.
- Screw working module into base near bottom clamp.
- Clamp to top of next module.
- Suck in middle as needed. Use T25 screws.
- Screw working module at other end - done.
- Add brace for support. 2x4x8s for braces.
- Bump nail it off once quality controlled for module correctness with fiducials and Pokayoke marking.
Concrete Calculator
Links
- See SH4 Pictures