Bohle , sometimes also plank, as well as post in Austria , is the name for an elongated sawn timber with a flat cross-section. Length and width dimensions correspond to a (wooden) board . However, a plank is thicker.
- According to DIN 68252 (sawn timber in general), which has a thickness of at least 40 mm and a width of at least twice the thickness.
- In contrast to this, the DIN 4074 standard (lumber for building construction) which is valid for the building industry defines the width as at least three times the thickness.
- In Austria, posts are pieces of wood with a rectangular cross-section, thicker than a board (according to the standard, which in Austria is a maximum of 35 mm thick). By definition, a post has a thickness of at least 40 mm and a maximum of 100 mm rough sawn with a width of ≥18 cm. Planed posts can also be only 35 mm thick.
Colloquially, floorboards are also called planks.
Planks are used because of their greater rigidity compared to boards:
- in construction as a walking surface on scaffolding ( Austrian scaffolding posts ), according to the standard of special wood quality, with chamfered corners and often with metal end pieces ( shoes ) for hanging and as splice protection;
- as bedding for heavy machinery, guns and the like;
- as scaffolding wood (aids in technical assistance or on construction sites) or for temporary small bridges (e.g. for loading a truck with a wheelbarrow).
Planks are especially used by joiners and carpenters . They are often used in shipbuilding (see plank ), timber construction as well as in construction site equipment and for (temporary) traffic structures :
- to floors in subordinate rooms (stables, passageways), historically as valuable flooring ( ( plank floor ) with planks up to 1 meter wide)
- as a plank covering to protect historical paving , to create access to construction sites , as a base for cranes and other heavy construction machinery as well as bridge tracks for wooden and iron road and railway bridges
- for pieces of cream , squared timber etc.
- for the production of sheet piling , bulwarks, etc.
A base board is a shorter board that is often slightly rounded on one side. The ends or only the corners can be protected from wear and fraying with metal fittings ( plank protection ). Alternatively, corrugated irons can be hammered into the end grain to prevent cracks from developing at the ends.
Norms and standards
- DIN 4074-1 (2003-06) Sorting wood according to load-bearing capacity - Part 1: Softwood lumber.
- DIN 4074-5 (2003-06) Sorting wood according to load-bearing capacity - Part 5: Hardwood lumber .
- is also binding for Austria as ÖNORM DIN 4074-x
- DIN 68252-1 Terms for sawn timber, shape and dimensions.