Squared timber is a solid sawn timber or construction timber obtained by sawing tree trunks along the trunk axis. It is square timber with a rectangular cross-section and a thickness-width ratio of no more than 1:3.
Two standards are decisive for the minimum thickness: squared timber must be at least 6 cm thick as sawn timber, at least 4 cm thick as construction sawn timber with a defined load-bearing capacity.
The strongest and most stable square timber after wooden beams is characterised by high load-bearing capacity and load-bearing capacity. Squared timber can be used in various ways, for example as ceiling beams, rafters or in combination with other square timber as part of trusses.
The weight of a squared timber depends on three factors: the type of wood, the volume and the moisture content of the wood. A typical spruce squared timber with dimensions of 3,000 x 80 x 80 mm and 20 percent moisture (air-dry), for example, weighs around 8.8 kg.
The designation of individual formats of coniferous timber is defined in DIN 4074-1:
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