The simple design of timber members consists of the effective cross-section method and the reduced strength and stiffness method. The methods are based on charring depths and temperature profiles, which need to be calculated. At present the only reliable temperature information is limited to the standard time-temperature response. Read more.

For small section timber members, protection from linings is required. In the case of walls and floors, tables are provided in codes and guides that allow the designer to assess the stability, insulation and integrity of the system. These tables are only valid for use with the standard time-temperature relationship. Read more.

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