According to the use and arrangement of the loads, one or another typology or arrangement of vertical and diagonal uprights is appropriate. Some of the most used typologies are known by the names of the people who patented them or studied them in detail for the first time.

In horizontal trusses with vertical gravitational loads, generally the upper chord (set of horizontal or inclined bars located higher) is subjected to compression forces, while the lower chord is subjected to tensile forces. On the other hand, the uprights and diagonals present more variability. Depending on the inclination of the diagonals to one side or the other, they can be all in tension, all in compression, with alternating compressions and tractions, or with an even more complex stress distribution. The stress of the uprights, in turn, is usually opposite to that of the adjacent diagonals, although this is not a general rule.

Among the most common variations is the use of double Warren trusses and the inclusion of mullions.

There are other types of lattice or truss structures such as:

Contenido

En el cálculo de celosías se puede dividir en las siguientes etapas de cálculo:.

Statically determined plane trusses can be calculated with sufficient approximation, without considering deformations, using only static equations "Statics (mechanical)"). In this type of trusses it can be estimated that the nodes are articulated, so the bending moment "Bending (engineering)") is not taken into account, nor the shear stress, only the axial stress, constant along the bar, is considered. There are various methods based on applying the statics equations efficiently and quickly, for a lattice of n knots:

The structures for which the first two methods work are called simple, and their geometry is that of a conformal triangulation. There are statically determined lattices that are not simple, called composite lattices that can be calculated by the section method, possibly combined with the knot method or the Cremona-Maxwell method. If the lattices are not statically determined, which happens whenever b > 2n-3 the first three previous methods do not work and the Henneberg method or the rigidity matrix method must be used. In the case that b > 2n-3 the lattices are called complex.

For statically determined three-dimensional lattices the three-dimensional version of the knot method can be used. For hyperstatic structures, various matrix methods can be used.

According to the use and arrangement of the loads, one or another typology or arrangement of vertical and diagonal uprights is appropriate. Some of the most used typologies are known by the names of the people who patented them or studied them in detail for the first time.

In horizontal trusses with vertical gravitational loads, generally the upper chord (set of horizontal or inclined bars located higher) is subjected to compression forces, while the lower chord is subjected to tensile forces. On the other hand, the uprights and diagonals present more variability. Depending on the inclination of the diagonals to one side or the other, they can be all in tension, all in compression, with alternating compressions and tractions, or with an even more complex stress distribution. The stress of the uprights, in turn, is usually opposite to that of the adjacent diagonals, although this is not a general rule.

Among the most common variations is the use of double Warren trusses and the inclusion of mullions.

There are other types of lattice or truss structures such as:

Contenido

En el cálculo de celosías se puede dividir en las siguientes etapas de cálculo:.

Statically determined plane trusses can be calculated with sufficient approximation, without considering deformations, using only static equations "Statics (mechanical)"). In this type of trusses it can be estimated that the nodes are articulated, so the bending moment "Bending (engineering)") is not taken into account, nor the shear stress, only the axial stress, constant along the bar, is considered. There are various methods based on applying the statics equations efficiently and quickly, for a lattice of n knots:

The structures for which the first two methods work are called simple, and their geometry is that of a conformal triangulation. There are statically determined lattices that are not simple, called composite lattices that can be calculated by the section method, possibly combined with the knot method or the Cremona-Maxwell method. If the lattices are not statically determined, which happens whenever b > 2n-3 the first three previous methods do not work and the Henneberg method or the rigidity matrix method must be used. In the case that b > 2n-3 the lattices are called complex.

For statically determined three-dimensional lattices the three-dimensional version of the knot method can be used. For hyperstatic structures, various matrix methods can be used.