Girder Roof Structure

These are often pre fabricated and sent to a construction site.

Girder roof structure.

The top ends of the rafters often meet at a ridge beam but may butt directly to another rafter to form a pair of rafters called a couple. All girders are beams but not all beams are girders. A girder truss is designed to support other secondary roof supports. Construction of a rafter roof a simple rafter roof consists of rafters that the rafter foot rest on horizontal wall plates on top of each wall.

Their is no notching permitted in the center third of any beam. A girder ˈɡɜːrdər is a support beam used in construction. A truss is a roof or floor support structure built from a connected series of box or triangle shaped elements to distribute load to a building s walls or foundation. Girder is a type of roof truss or beam that is built stronger than a standard truss to support in construction.

Girders are the main horizontal supports of a structure and support smaller beams. It can bear the load extra loads imposed on it. Here s a look at the fundamental differences between these two elements. It is the main horizontal support of a structure which supports smaller beams.

Understanding how a girder is different from a beam is a necessary skill for any builder engineer or constructionworker. Buildings constructed in l or t shapes use girder truss systems where the roof changes direction. See the figure below the girder trusses usually are specially made with heavier chords and plates and can consist of a number of trusses laminated with nails or bolts.