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Hankinson's equation (also called Hankinson's formula or Hankinson's criterion) [1] is a mathematical relationship for predicting the off-axis uniaxial compressive strength of wood. The formula can also be used to compute the fiber stress or the stress wave velocity at the elastic limit as a function of grain angle in wood.
Wood or timber decking can be used in a number of ways: as part of garden landscaping, to extend the living area of a house, and as an alternative to stone-based features such as patios. Decks are made from treated lumber , composite lumber , composite material , and aluminum .
This is a list of building materials.. Many types of building materials are used in the construction industry to create buildings and structures.These categories of materials and products are used by architects and construction project managers to specify the materials and methods used for building projects.
When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. [3] The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the ...
Deck (bridge), the roadway surface of a bridge; Deck (building), an outdoor floor attached to a building made of wood or wood-like material; Another name for a storey; The concrete or tile area surrounding a swimming pool; Deck arch bridge, a type of bridge; Observation deck, a platform situated upon a tall architectural structure or natural ...
The wood moisture content is above 25% on a dry-weight basis; The environment is sufficiently warm; Oxygen (O 2) is present; Wood with less than 25% moisture (dry weight basis) can remain free of decay for centuries. Similarly, wood submerged in water may not be attacked by fungi if the amount of oxygen is inadequate. Fungi lumber/timber ...
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