straw bale construction
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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 - PowerPoint PPT PresentationTRANSCRIPT
Straw Bale Straw Bale ConstructionConstruction
A Path to SustainabilityA Path to Sustainability
Julie Birdwell, New Prairie Construction Co.
Building with StrawBuilding with Straw
Energy EfficientEnergy Efficient Structurally SuperiorStructurally Superior Community Building and Personal Community Building and Personal
AestheticsAesthetics
Energy EfficiencyEnergy Efficiency
Low Embodied Energy of StrawLow Embodied Energy of Straw– Uses an agricultural waste productUses an agricultural waste product– Renewable as next year’s grain cropRenewable as next year’s grain crop
High “R” Value (R 34 –R 55) in wallsHigh “R” Value (R 34 –R 55) in walls
Healthy Material ChoicesHealthy Material Choices
Wall package contains no VOC’s Wall package contains no VOC’s (volatile organic compounds)(volatile organic compounds)
Earthen plasters for interior finishesEarthen plasters for interior finishes– Reduces construction waste & haulingReduces construction waste & hauling– Low embodied energy ingredientsLow embodied energy ingredients– Painting not requiredPainting not required
Stucco/Plaster serves as masonry Stucco/Plaster serves as masonry massmass
Structural IntegrityStructural Integrity
Straw bale houses more earthquake Straw bale houses more earthquake resistantresistant
Two hour fire wallTwo hour fire wall Exceptionally strong Exceptionally strong
– 100 lbs/lf lateral force load strength*100 lbs/lf lateral force load strength*– 4000 lbs/lf compressive load strength*4000 lbs/lf compressive load strength*
*when finished with cement stucco
Community BenefitsCommunity Benefits
““High Tech” expertise not requiredHigh Tech” expertise not required Encourages community building Encourages community building
through participation in buildingthrough participation in building Supports local agricultureSupports local agriculture EconomicalEconomical
– 1 straw bale = insulation + sheathing + studs + 1 straw bale = insulation + sheathing + studs + drywalldrywall
– $1/sqf straw bale; $3.41/sqf standard construction $1/sqf straw bale; $3.41/sqf standard construction with same R-valuewith same R-value
AestheticsAesthetics
Design flexibilityDesign flexibility– Creativity in constructionCreativity in construction– Biomorphic to angular/modernBiomorphic to angular/modern
Urbana Straw Bale “Green” Urbana Straw Bale “Green” FeaturesFeatures
Rastra Foundation Rastra Foundation Walls (R-34, 85% Walls (R-34, 85% recycled styrofoam recycled styrofoam ICF)ICF)
Rye Straw Bales Rye Straw Bales from Organic from Organic FarmerFarmer
Cellulose Ceiling Insulation (recycled Cellulose Ceiling Insulation (recycled newspaper)newspaper)
Reclaimed Maple Great Room FloorReclaimed Maple Great Room Floor
Bamboo Floors Bamboo Floors in Bedroomsin Bedrooms
Reclaimed Reclaimed Yellow Pine Yellow Pine Jambs, Interior Jambs, Interior Doors, and TrimDoors, and Trim
Reclaimed Slate Reclaimed Slate CountertopsCountertops
Recycled Porch FlooringRecycled Porch Flooring High Efficiency Gas Forced Air High Efficiency Gas Forced Air
FurnaceFurnace Corn Stove- lower level; Wood Stove- Corn Stove- lower level; Wood Stove-
first floorfirst floor Low E glass for windows/skylightsLow E glass for windows/skylights
Engineered Engineered Lumber Lumber Bearing Beams Bearing Beams and Floor Joistsand Floor Joists
Trussed Roof Trussed Roof SystemSystem
Natural Paints- Natural Paints- 11stst floor interior floor interior
Outdoor KitchenOutdoor Kitchen Outdoor Clothes Outdoor Clothes
LineLine