# Timber
The Grade Wizard should normally be used to define the timber grade properties.
# Definition
Name
The name is only used as a convenient way of identifying a material.
Standard Grades
The standard grades allows selection from among a predefined set of properties.
Basic Properties
The following basic properties are specified:
- Strength (
) - Elastic modulus (
) - Poisson's ratio (
) - Density (
) - Thermal expansivity (
)
Environmental Impact
Clicking Environmental Impactenables environmental impact parameters to be specified for this material by opening the Environmental Impact Wizard. These values then override the global values specified in Environmental Impact Specification for this material.
The current environmental values for the material are reported.
The cost allocates a unit cost to the material.