After felling, timber will lose moisture to align itself with the atmospheric conditions. Moisture content should be lower than 20% to stop fungal attack. Seasoning is the name of the process where moisture content is reduced to the appropriate level for proposed use.
Shrinkage will occurs as a result of the moisture loss - typical 3-4% across the grain.
Densities of solids, liquids and gases. Definitions and convertion calculators.
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
Calculate angles with a straight board across carpenter's square.
Board feet is used as a volume measurement of lumber.
Densities of common products - Imperial and SI-units.
An introduction to density, specific weight and specific gravity.
The cord unit for purchasing fuel wood.
Common sizing of glue-laminated timber.
Species of hardwood vs. softwood.
Hardwood and softwood drill speed chart.
Sizing of hardwood lumber.
Lumber and surface finishing abbreviations.
Weights of green, kiln dried and pressure treated lumber boards.
Grading of lumber in North America
Calculate miter saw protractor angles for skirting and decorative mouldings work.
Allowable withdrawal load for nail and spikes.
Grit sizes ranging 12 - 600.
Strength classes, bending stress and mean density of hardwood and softwood
Rough lumber, surfaced lumber (dressed), worked lumber, shop and factory lumber and yard lumber.
Nominal and minimum-dressed lumber sizes.
Densities of selected solids.
Basic size, area, moments of inertia and section modulus for timber - metric units.
Properties of structural lumber.
Trees species and relative water demand.
Height of trees commonly used in towns and urban areas.
Combustion of wood and firewood heat values for species like Pine, Elm, Hickory and more.
Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength.
The density of wood versus moisture content.
Combustion heat values for wet and dry wood - Btu/pounds, kJ/kg and kcal/kg.
Safe loads for wood columns.
Soft and hardwood - the Janka Hardness scale.
Weight supported by a double or triple wood headers.
Allowable withdrawal load force.
Weight of green and air-dried fire wood.
Density, fibre stress, compressive strength and modulus of elasticity of clear wood, panel and structural timber products.
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