Structural Lumber - Section Sizes - Basic size, area, moments of inertia and section modulus for timber - metric units.Stress, Strain and Young's Modulus - Stress is force per unit area - strain is the deformation of a solid due to stress.Softwood Lumber - Standard Sizes - Nominal and minimum-dressed lumber sizes.Softwood Lumber - Grading - Rough lumber, surfaced lumber (dressed), worked lumber, shop and factory lumber and yard lumber.Softwood Lumber - Dimensions - Commercial softwood lumber dimension chart - nominal and actual sizes.Softwood and Hardwood - Structural Strength Classes - Strength classes, bending stress and mean density of hardwood and softwood.Nails and Spikes - Withdrawal Force - Allowable withdrawal load for nail and spikes.2 Grade of Douglas fir and maximum span floor joists - imperial units Machine Stress Rated (MSR) and Machine Evaluated (MEL) Lumber - Grading of lumber in North America.Lumber - Weights - Weights of green, kiln dried and pressure treated lumber boards.Horizontal Roof Rafters - Maximum Spans - Douglas Fir in horizontal roof rafters and maximum spans. Hardwood Lumber - Dimensions - Sizing of hardwood lumber.Hardwood and Softwood Species - Species of hardwood vs.Glue-Laminated Timber - Dimensions - Common sizing of glue-laminated timber.Area Moment of Inertia - Typical Cross Sections I - Typical cross sections and their Area Moment of Inertia.Beams and Columns - Deflection and stress, moment of inertia, section modulus and technical information of beams and columns.Use the Engineering ToolBox - SketchUp Extension - to add Construction Lumber to Your Models Timber Structural Properties - Metric unitsīased on standard commercially available lumber within the USA.
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