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Straw Bale Construction

Straw Bale Construction. A Path to Sustainability. Julie Birdwell, New Prairie Construction Co. Building with Straw. Energy Efficient Structurally Superior Community Building and Personal Aesthetics. Energy Efficiency. Low Embodied Energy of Straw Uses an agricultural waste product

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Straw Bale Construction

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  1. Straw Bale Construction A Path to Sustainability Julie Birdwell, New Prairie Construction Co.

  2. Building with Straw • Energy Efficient • Structurally Superior • Community Building and Personal Aesthetics

  3. Energy Efficiency • Low Embodied Energy of Straw • Uses an agricultural waste product • Renewable as next year’s grain crop • High “R” Value (R 34 –R 55) in walls

  4. Healthy Material Choices • Wall package contains no VOC’s (volatile organic compounds) • Earthen plasters for interior finishes • Reduces construction waste & hauling • Low embodied energy ingredients • Painting not required • Stucco/Plaster serves as masonry mass

  5. Structural Integrity • Straw bale houses more earthquake resistant • Two hour fire wall • Exceptionally strong • 100 lbs/lf lateral force load strength* • 4000 lbs/lf compressive load strength* *when finished with cement stucco

  6. Community Benefits • “High Tech” expertise not required • Encourages community building through participation in building • Supports local agriculture • Economical • 1 straw bale = insulation + sheathing + studs + drywall • $1/sqf straw bale; $3.41/sqf standard construction with same R-value

  7. Aesthetics • Design flexibility • Creativity in construction • Biomorphic to angular/modern

  8. Urbana Straw Bale “Green” Features • Rastra Foundation Walls (R-34, 85% recycled styrofoam ICF) • Rye Straw Bales from Organic Farmer

  9. Cellulose Ceiling Insulation (recycled newspaper) • Reclaimed Maple Great Room Floor

  10. Bamboo Floors in Bedrooms • Reclaimed Yellow Pine Jambs, Interior Doors, and Trim • Reclaimed Slate Countertops

  11. Recycled Porch Flooring • High Efficiency Gas Forced Air Furnace • Corn Stove- lower level; Wood Stove- first floor • Low E glass for windows/skylights

  12. Engineered Lumber Bearing Beams and Floor Joists • Trussed Roof System

  13. Natural Paints- 1st floor interior • Outdoor Kitchen • Outdoor Clothes Line

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