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The quality of timber must be ensured before using it for a purpose. The quality can be ensured by investigating the properties of timber. Here we have discussed both physical and mechanical properties of timber which affects timber quality.Followings are the physical and mechanical properties of timber:


Structural Lumber - Properties - Properties of structural lumber Timber - Structural Lumber Section Sizes - Basic size, area, moments of inertia and section modulus for timber - metric units Wood - Moisture and Compressive Strength - Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength

www.aboutcivil.org/Properties of Wood and Timber.html

Wood is the oldest material used by humans for construction after stone. Despite its complex chemical nature, wood has excellent properties which lend themselves to human use. It is readily and economically available; easily machinable; amenable to fabrication into an infinite variety of sizes and shapes using simple on-site building techniques; Exceptionally strong relative


Specific gravity is one of the very fundamental properties of wood and timber. All types of wood have Specific gravity below 1. The hardwoods have a specific gravity ranging between 0.7 to 0.9 whereas in most of the softwoods it lies below 0.7.


Properties of Timber From Dead Trees 4–33 ... Many of the mechanical properties of wood tabulated in this chapter were derived from extensive sampling and analysis ... have been implemented in engineering standards. Orthotropic Nature of Wood Wood may be described as an orthotropic material; that is, it ...


on structural properties of timber and timber products'. A knowledge of engineering materials is essential for engineering design. Timber is a traditional building material and over the years considerable knowledge has been gained on its important material properties and their effects on structural design and service behaviour. Many failures in ...


Warping: Good timber do not warp under changing environmental conditions. Toughness: Timber should be capable of resisting shock loads. Abrasion: Good timber do not deteriorate due to wear. This property should be looked into, if timber is to be used for flooring. Strength: Timber should have high strength in bending, shear and direct compression.


Civil Engineering Design Knowledge. The following table is Structural Lumber Wood Engineering Properties. Modulus of Elasticity of Wood, Wood Engineering Design Data. Modulus of elasticity also referred to as Tensile Modulus or Young's Modulus. Elastic ratios for various wood species at approximately 12% moisture content - see bottom of webpage.


Cherry timber can contain pith flecks and gum pockets. It has a good workability. Cherry timber is easy to machine, nail, and glue. It is an excellent timber for turning and carving. It has good bending properties. It has low stiffness. Cherry timber is shock resistance.


Structural Lumber - Properties - Properties of structural lumber Three-Hinged Arches - Continuous and Point Loads - Support reactions and bending moments Timber - Structural Lumber Section Sizes - Basic size, area, moments of inertia and section modulus for timber - metric units