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Guide > Designing for Durability
> Natural timber
Designing for Durability
Natural timber
Cypress and many
hardwoods show great natural durability. For instance, Turpentine has a
proven track record in tough marine environments such as wharf
construction. Timber species are divided into four durability classes as
shown in Table 15. The tabulated data indicates how long each species will
resist decay and termite attack under different hazard conditions. These
classifications relate specifically to untreated heartwood rather than the
less durable sapwood (which is generally regarded as Class 4
durability).
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