Permanent Wood Foundation Design Specification with Commentary

ivPermanent wood foundationTABLE OF CONTENTSSection/Title Page Section/Title Page1 GENERAL REQUIREMENTS ..............11.1 Scope 21.2 Conformance With Standards 21.3 Terminology 21.4 Notation 32 MATERIALS ..............................................................52.1 Framing 62.2 Sheathing 62.3 Preservative Treatment 62.4 Connections In Preservative-TreatedWood 72.5 Aggregate for Footings and Fill 72.6 Caulking Compound 72.7 Polyethylene Sheeting 72.8 Polyethylene Sheeting Adhesive 83 SOIL: TYPES, STRUCTURALPERFORMANCE, DRAINAGE ..........93.1 Soil Types 103.2 Soil Structure Characteristics 104 ENVIRONMENTAL CONTROL .....114.1 Design for Dryness 124.2 Design for Climate Control 135 STRUCTURAL DESIGN ....................... 155.1 General 165.2 Material Design Standards 165.3 Design Loads and Design Methodology 165.4 PWF Wall Design 185.5 Footing Design 225.6 Basement Floor Design 245.7 Design of Framing Around Openings 24REFERENCES ...................................................................... 25LIST OF FIGURESFigurePage1 PWF Exterior Basement Wall ShowingLocation of Vapor Barrier With VentedAir Space......................................................... 132 PWF Exterior Basement Wall ShowingLocation of Vapor Barrier with no VentedAir Space......................................................... 143 Pressure Diagram Used to CalculateBending Moment, Shear, and Deflection inFoundation Walls with Basement ResistingLateral Soil Load............................................. 174 Pressure Diagram Used to CalculateBending Moment, Shear, and Deflectionin Foundation Walls with Crawl SpaceResisting Lateral Soil Load............................. 175 Basement Wall Anchorage to Resist WindUplift............................................................... 216 Crawl Space Wall Anchorage to ResistWind Uplift..................................................... 21American Wood Council