轻型木结构轻木构件

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1、加拿大木业协会设计师培训班第一阶段–轻型木结构CanadaWoodLevel1-Wood-FrameConstruction构件设计FramingComponentsHerbertOttoB.Arch.,MRAIC锯材SawnTimber胶合材Plywood轻型木结构房屋使用不同的木产品AVarietyofWoodProductsareUsedtoFrameaHouse木基结构材WoodBasedBuildingMaterials规格材Dimensionedframinglumber轻型木结构使用标准的规格材（软

2、木）Standarddimensionsoftwoodlumberusedinwood-frameconstruction名义尺寸Nominaldimensions2x2,2x3,2x4,2x6,2x8,2x10,2x12实际尺寸Actualdimensions1½”x1½”(38mmx38mm)1½”x2½”(38mmx64mm)1½”x3½”(38mmx89mm)1½”x5½”(38mmx140mm)1½”x7¼”(38mmx184mm)1½”x9¼”(38mmx235mm)1½”x11¼”(38mmx235

3、mm)长度Lengths从2.4m到7.3m，每级增加600mmIncrementsof2feet(600mm)from8ft(2.4m)to24ft(7.3m)木基结构材WoodBasedBuildingMaterials板材Boards标准尺寸的软木板材Standardsizesofsoftwoodlumberboards名义尺寸Nominaldimensions1x21x31x41x61x8实际尺寸Actualdimensions¾”x1½”(19mmx38mm)¾”x2½”(19mmx64mm)¾”x3½

4、”(19mmx89mm)¾”x5½”(19mmx140mm)¾”x7¼”(19mmx184mm)框架用木材FramingLumber用于轻型木结构的软木树种Speciesofsoftwoodlumberusedinwoodframeconstruction花旗松DouglasFir西部落叶松WesternLarch西部铁杉WesternHemlock云杉Spruce松Pine冷衫Fir材性接近的树种放在一起使用Specieswithsimilarcharacteristicsgivencommercialgrou

5、pdesignations云杉-松-冷杉Spruce–Pine–FirS-P-F花旗松-落叶松DouglasFir-LarchD.Fir-L铁杉-冷杉Hemlock-FirHem-Fir指接材FingerJointedLumber较短的材料，如38x89和38x140指接在一起形成较长的材料Shortlengthsof38x89and38x140(2x4and2x6)joinedtoformlongerpieces.用于墙骨柱Usedforstuds没有翘曲Doesnotwarp材料利用率高Efficientus

6、eofmaterials规格材分等GradingLumber加拿大的规格材有目测分等和机械分等(MSR)LumberinCanadavisuallygradedormachinestressrated(MSR)分等依据Selectstructural高强度Higheststrength良好的外观Bestappearance一等Number1和上述分等依据相似，但允许出现更大的结疤Similartoselectstructuralbutlargerknots二等Number2和一等的强度分等相似，但外观稍差Simi

7、larstrengthtonumber1butnotasgoodvisualappearance三等Number3大量用于施工，外观没有要求Widelyusedinconstructionwhereappearanceisnotafactor规格材分等GradingLumber墙骨柱等级StudGrade2x4和2x6的墙骨柱用于承受竖向荷载2x4and2x6ratedforverticalloading施工级材和标准级材用于结构构件Constructiongradeandstandardgradeusedfor

8、structuralapplications实用级和经济级材用于非结构构件Utilitygradeandeconomygradefornon-structuralapplications分等机构GradingAgency生产厂代码Milldesignation树种SpeciesGroup含水率MoistureContent指定的等级AssignedGrade分等认证章Gr