Girder Roof Truss Design

Girder trusses have a long straight design.

Girder roof truss design. Girder trusses are designed to carry additional loads other than standard roof loads. Girders may also be designed to accommodate special applications or designs. 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. Figure 6 1plane truss trusses are frequently used to span long lengths in the place of solid web girders.

The roofing system for such buildings is truss with roof covering material. Using these structures in roof design eliminates the need for a load bearing wall below resulting in open floor plans. Buildings constructed in l or t shapes use girder truss systems where the roof changes direction. An advantage of the truss design for roofs is that ducts and pipes that are required for operation of the buildings services can be installed through the truss web i e.

They have a top chord and a bottom chord separated by diagonal webs and vertical webs. The top chord is always in compression and the bottom chord is always in tension. A girder truss is designed to support other secondary roof supports. Typically the building designer or builder will contract with the truss fabricator who will supply a truss layout and a structural design of each significant element of the roof system.