轻型木结构轻木构件.ppt

加拿大木业协会设计师培训班第一阶段–轻型木结构CanadaWoodLevel1-Wood-.,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(软木)Standarddimensionsoftwoodlumberusedinwood-frameconstruction?名义尺寸Nominaldimensions?2x2,2x3,2x4,2x6,2x8,2x10,2x12?实际尺寸Actualdimensions?1?”x1?”(38mmx38mm)?1?”x2?”(38mmx64mm)?1?”x3?”(38mmx89mm)?1?”x5?”(38mmx140mm)?1?”x7?”(38mmx184mm)?1?”x9?”(38mmx235mm)?1?”x11?”(38mmx235mm)?长度Lengths?,每级增加600mmIncrementsof2feet(600mm)from8ft()to24ft()木基结构材WoodBasedBuildingMaterials?板材Boards?标准尺寸的软木板材Standardsizesofsoftwoodlumberboards?名义尺寸Nominaldimensions?1x2?1x3?1x4?1x6?1x8?实际尺寸Actualdimensions??”x1?”(19mmx38mm)??”x2?”(19mmx64mm)??”x3?”(19mmx89mm)??”x5?”(19mmx140mm)??”x7?”(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?mercialgroupdesignations?云杉-松-冷杉Spruce–Pine–FirS-P-F?花旗松-落叶松DouglasFir--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Efficientuseofmaterials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Similarstrengthtonumber1butnotasgoodvisualappearance?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StudGrade?2x4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Constructiongradeandstandardgradeusedforstructuralapplications?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GradingStamps?规格材每600mm有一个分