Girder Roof Structure

A girder truss is designed to support other secondary roof supports.

Girder roof structure.

Notches on the outer thirds must not exceed 1 6 of the width of the board. Here s a look at the fundamental differences between these two elements. 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. 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.

Buildings constructed in l or t shapes use girder truss systems where the roof changes direction. Both headers and girders are beams that are oriented horizontally and transfer load down to walls piers or posts. All girders are beams but not all beams are girders. It can bear the load extra loads imposed on it.

A girder ˈɡɜːrdər is a support beam used in construction. It is the main horizontal support of a structure which supports smaller beams. 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. Girder is a type of roof truss or beam that is built stronger than a standard truss to support in construction.

Girders often have an i beam cross section composed of two load bearing flanges separated by a stabilizing web but may also have a box shape z shape or other forms. Girders are the main horizontal supports of a structure and support smaller beams. These are often pre fabricated and sent to a construction site.