Parts Of A Roof Truss

A roof truss is a structural unit designed to frame a roof and to support the roof material interior ceiling insulation and forces caused by snow rain and wind.

Parts of a roof truss. See gusset construction below. Bearing cut or seat cut. Roof trusses can be said to be the skeleton of the roof as you known the skeleton produce the shape of animals even humans. Here are a roof truss basic parts and terms.

The primary segment of the roof truss that runs along the underside and supports its decking. It is a waterproofing layer made of regular felt stacked above the solid. For instance say your roof is 5 in 12. Structural support of trusses usually walls normally with a timber wall plate.

In structural engineering the name truss describes a triangular design a joint framed structure that sustained the inclined vertical or horizontal loads a truss consist of angles channels plates and eye bars. The bottom chord which is the bottom of the framed truss. It s telling you the roof is raised four inches for each horizontal 12 inch run. This is the roof s steepness measurement.

The wall plate width see figure 7. Horizontal beams supported by posts and used to support the mid span of rafters to cover longer spans these are used in large buildings like the traditional large old barns in the us. Components of roof truss. Roof truss parts explained.

Truss the truss is a framework comprised of wooden beams that helps to support the roof. There are three parts to the roof truss that you have to know. It is a framework typically consisting of rafters posts and struts supporting a roof bridge or other structure you will find them supporting the roofs of auditoriums. The highest point on a truss where the sloping top chords meet.

Then there is the top chord or rafters that are angled to make the roof pitch. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. A slight vertical cut usually less than 75mm at the. A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework.

Rafters these are wooden beams that run from the top of the roof to the bottom. The rafters when combined together help to form the truss. Hip this is an external angle formed by the intersection of two sloping roof planes. A roof truss is supported by the exterior walls and span the width of the building.

One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. Finally there are the gussets that hold the framed truss together.