Steel Roof Cross Bracing

Fly bracing is the secondary structure which between roof beam and purlin column and wall girt bracing connected with roof beam and purlin in 45 degree.

Steel roof cross bracing.

In braced construction beams and columns are designed under vertical load only assuming the bracing system carries all lateral loads. However high wind loads high snow loads high seismic activity or a large number of framed openings might result in alternative bracing methods. Bracing which provides stability and resists lateral loads may be from diagonal steel members or from a concrete core. Roof bracing is the secondary structure of the steel building which include lateral horizontal bracing and longitudinal horizontal bracing.

It may be located in the roof and walls of a building between frame members transferring longitudinal forces to the foundation. Also called x bracing is a tension only bracing system. Economy comes from the inexpensive nominally pinned connections between beams and columns. Bracing is often provided by a steelbrace.

Braced frames are a very common form of construction being economic to construct and simple to analyse. Diagonal bracing is required to address top chord distortion. It is used in other parts of the roof as well for example the bottom chords and webs. Metal buildings face constant stress from wind forces including torsion shear compression and lift.

For most steel buildings x bracing each wall with cables provides all the bracing that is needed.