Roof Truss Lattice Girder Truss

The wind girder is arranged as a warren or pratt truss parallel to the roof plane the chords of the wind girder are the upper chords of two adjacent vertical trusses.

Roof truss lattice girder truss.

North light truss is the oldest and most economical kind of truss. Trusses can have a particular advantage for bridges in countries where access to the site is difficult or supply of skilled labour is limited. Quality assurance manufactured to the iso9001 2008 specifications. North light roof truss.

Open sections primarily angles channels tees and joists. The diagonal lines of steel give support in all directions helping to prevent the lattice girder from bending. This type of truss is seen in a framed roof consisting of rafters and a ceiling joist and in other mechanical structures such as bicycles and aircraft. The simplest form of a truss is one single triangle.

These loads can be other trusses that attach by sitting on top of the girder or they may attach to the side of the girder using truss hangers. Have a wide set of lattice girders that include support trusses. Double angle and channels. Girders may also be designed to accommodate special applications or designs.

Widely used in mining tunnelling for roof support. These are found in industrial buildings drawing rooms and large spaces with a span of 20 30 meters. The mansard trusses can be used in the span ranges of 12 m to 30 m. The belfast truss is a cross between the town s lattice truss and the bowstring truss it was developed in ireland as a wide span shallow rise roof truss for industrial structures.

Because of the stability of this shape and the methods of analysis used to calculate the forces within it a truss composed entirely of triangles is known as a simple truss. This means that the axial forces in these members due to loading on the vertical truss and those due to loads on the wind girder loading must be added together for an. Truss lattice girder and bracing members for buildings are selected from. A floor girder b warren truss d k type web c lattice girder e diamond type web the economical span lengths of the pitched roof trusses excluding the mansard trusses range from 6 m to 12 m.

Mctear co of belfast ireland began fabricating these trusses in wood starting around 1866 by 1899 spans of 24 metres 79 ft had been achieved and in the 20th century shipyards and airplane hangars demanded.