Girder Roof Structure

Their is no notching permitted in the center third of any beam.

Girder roof structure.

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. A girder ˈɡɜːrdər is a support beam used in construction. It is the main horizontal support of a structure which supports smaller beams. These are often pre fabricated and sent to a construction site.

Here s a look at the fundamental differences between these two elements. Understanding how a girder is different from a beam is a necessary skill for any builder engineer or constructionworker. All girders are beams but not all beams are girders. 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.

Notches on the outer thirds must not exceed 1 6 of the width of the board. 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. Girders are the main horizontal supports of a structure and support smaller beams. Girder is a type of roof truss or beam that is built stronger than a standard truss to support in construction.

A girder truss is designed to support other secondary roof supports. 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. It can bear the load extra loads imposed on it.