Wood



The strength of wood in both tension and compression arises from its organic nature, which gives it an internal structure of longitudinal and radial fibres that is not impaired by cutting or long exposure. But like all organisms it contains moisture and is not uniformly strong, so it must be carefully selected and seasoned to prevent warping, splitting, and failure under loads. Wood is used in building both solid and skeletal structures.
 * //Wood//** is easier to acquire, transport, and work than other natural materials. All parts of a building can be efficiently constructed of wood except foundations; its disadvantage is susceptibility to fire, mold, and termites.