Timber Sites
Engineered Wood Association (APA)Western Wood Products Association (WWPA)Southern Pine Council's Home PageSouthern Forest Products AssociationAmerican Wood Preservers AssociationForest Products Laboratory Home PageNational Wood Flooring AssociationAmerican Institute of Timber Construction (AITC)American Forest & Paper Association (AF&PA)American Plywood AssociationBoise CascadeGeorgia-PacificWeyerhaeuser CompanyTrus JoistNorth American PlywoodLouisiana PacificOsmose Wood PreservingGreat Southern Wood PreservingArchitectural Woodwork InstituteAmerican Forest & Paper AssociationAmerican Wood CouncilAmerican Institute of Timber Construction (AITC)APA - The Engineered Wood AssociationCalifornia Redwood AssociationCanadian Wood CouncilCedar Shake & Shingle BureauComposite Panel AssociationCouncil of Forest Industries (COFI)Directory of Forest Products, Wood Science, & Forest Products Society (FPS)Hardwood Plywood & Veneer AssociationMSR Lumber Producers CouncilMaple Flooring Manufactures AssociationNational Hardwood Lumber AssociationNational Oak Flooring Manufacturers AssociationNational Sash & Door Jobbers AssociationNational Wood Flooring AssociationNorth American Wholesale Lumbermans AssociationSouthern Cypress Manufacturers AssociationSouthern Forest Products Association (SFPA)Southern Pine Inspection BureauStructural Board Association (SBA)The National Wood Window & Door AssociationVermont Wood Manufacturers AssociationWestern Red Cedar Lumber Association (WRCLA)Wood Moulding & Millwork Producers AssociationWood Truss Council of America (WTCA)Woodwork Institute of CaliforniaStaircase & Millwork CorporationStair WorldMylen Stairs, Inc.The Iron ShopArcwaysOutwaterSpiral Stairs of AmericaKroy Building ProductsAmerican Hardboard AssociationChadsworth's ColumnsMelton ClassicsRoyal CorinthianM-BossSpiral Stairs of AmericaSummit DoorMold and Wood ProductsLouisiana Pacific - SmartSide SidingGeorgia Pacific - Catawba SidingNatural Select WoodForest Products Laboratory (FPL)Real Cedar AssociationTemple InlandTreated WoodHardwood Plywood & Veneer AssociationSpan Calculator from Canadian Wood CouncilSpan Calculator from American Wood CouncilSouthern Pine Span TablesWashington State Timber EngineeringRandom LengthsAPA CAD Construction DetailsWood Connection CalculatorWood Span CalculatorStringfellow Lumber CompanyCase Engineered LumberLSU Ag Center for TermitesUSP Structural ConnectorsEngineered Wood Products AssociationBuild America ProgramWall Bracing (APA)Windstorm OSBWood I-Joist Manufacturers Association (WIJMA)Open JoistPerformance PanelsAPA CAD DetailsRidgeway Structural SystemsNorth American Deck and Railing Association (NADRA)Wood Plastic Composite Information CenterShake and Shingle AssociationBuilding Materials and Wood TechnologyFire Resources for Wood ConstructionWood Home ProjectsTypical Deck DetailsTimberWork ConnectorsEngineered Wood Products Association (EWPA)Ridgway Structural Systems, Inc.Timber Framer's Guild (TFG)Forest Products Laboratory (FPL)James & Company Reclaimed TimbersThe Roof Framing CalculatorStructuralamAPA - Build a Better HomeHuber Engineered Wood ProductsAdvantage Trim & Lumber - Exotic WoodsForest Products Laboratory DocumentsiLevel by WeyerhaeuserNichiha Fiber Cement Building ProductsTimber Framers Guild (TFG)Forest Products LaboratoryRaised Floor LivingStructural Building Components Association (SBCA)Zip System Roof and Wall SheathingGRK FastenersPhoenix Metal Products - Framing ConnectorsWoodworksUniversal Forest ProductsLumber and Building Materials Journal