Lattice (assembly)

See also: Lattice

A lattice , or system triangulated , is an assembly of Barre S verticals, horizontal and diagonal forming triangles, so that deformability is reduced when it is subjected to an effort.

This structure became current in construction starting from the industrial revolution, for bridges, planes… This preference of use rises from the effectiveness of the assembly, and the possibility of prefabricating the lattices, before final assembly on the site of construction.

When a lattice is subjected to an effort, certain parts of the assembly are put in compression and other parts in tension. For example, in the case of a bridge, the higher beams are compressed, the lower beams are tended, and the parts in diagonal avoid the Vrillage principal beams. The axis S of the bars contribute in Nœud S , which are perfect articulations. The loads are thus applied only to the only nodes.

Calculations of lattice or structures are an application of the Résistance of the materials. A graphic method of calculating is due to Karl Culmann.

See too

Method of crémona

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Lattice (assembly)

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