This document details the construction of a low-cost, self-sufficient home using a corrugated-steel structure. Key steps include:
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Structural Design: A 40×40-foot corrugated-steel building (S Model) made of 22-gauge Galvalume steel, featuring a self-supporting arched design with no internal posts or beams. The structure requires a concrete slab for stability, with a floating slab design on gravel to allow water drainage.
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Installation Process: The building was assembled by a three-person crew in two weeks, requiring 240 labor hours. Components were delivered on three pallets, including 160 panels and over 3,000 nuts/bolts. A local contractor completed the wooden south wall, including windows, doors, and passive solar heating elements.
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Interior Additions: The south-end addition included a second floor, electrical wiring, plumbing, kitchen installations, and decks. Open joist systems were used for the second floor, finished with joint compound and paint.
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Water Management: A 1,000-gallon underground cistern captures rainwater from the building’s gutters, providing non-potable water. A shallow-well jet pump delivers water to the house. Rainwater collection saves approximately $1,500 compared to drilling a well.
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Sewage System: A BioLet composting toilet reduces water usage, with plans to power it with solar panels. Graywater is directed to fruit/nut trees via underground pipes, avoiding the need for a costly sand mound system.
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Food Production: The property includes a large garden with blueberries, raspberries, beans, pumpkins, and asparagus. A food room with insulation and a heater stores canned goods and freezes excess produce. A movable greenhouse extends growing seasons by 12 weeks annually. Chickens will provide meat/eggs, with plans for year-round flock management.
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Cost Management: Total costs remained under $35K, with no debt. Income is generated through crop sales, shiitake mushrooms, and honey.