Timber design refers to the process of designing structures using wood as the primary material. It requires specialized skills and knowledge of the properties and behavior of wood as well as the relevant design codes and standards. Timber design involves planning, calculation, and detailing of structural elements, such as beams, columns, and trusses, to ensure safety, durability, and efficiency of the structure. Timber design also involves consideration of factors, such as moisture content, drying, and preservation, which may affect the performance and service life of the wood.