When specifying timber, the following aspects need to be considered:
- Application - the relevant functional requirements for the timber to be used in the building or structure.
- Performance requirements - appearance, structural performance, service life, initial cost, ongoing costs.
- Environmental hazards - each application will have a service environment that will enable the estimation of Environmental Hazard Level. This can be used as a guide for selecting a species with the right natural durability or for selecting an appropriate treatment type and level.
More information on timber specification.