What is a Girder Truss?
The design of girder trusses is long and straight. They have a top chord and a bottom chord, with diagonal and vertical webs separating them. The top chord is in compression all of the time, whereas the bottom chord is in tension all of the time. Depending on their direction, the webs might be in tension or compression. In the truss depicted below, the diagonal webs are in compression and the vertical webs are in tension.
Timber girder trusses are ideal for large structures and look fantastic when combined with steel joinery. A girder truss’ primary function is to support other structural elements in the frame, such as standard trusses, rafters, and purlins. As a result, girded trusses are built to be extremely robust and stiff.
Its Function in Construction
A girder truss is a type of secondary roof support that is most commonly used in the construction of buildings that have a roof that is irregularly shaped. Its main function is to support the weight of the roof.
Typically present in L- or T-shaped buildings due to the fact that the roof changes direction at a sharp angle. Typically, it is constructed of wood, although stronger materials, such as steel, are often used. A secondary function of a girder truss is to provide structural support to both the roof and the adjoining walls and help buildings withstand hurricanes and other powerful forces.