Roof Truss Bearing Points

Vertical distance between bearing and the uppermost point of the peak.

Roof truss bearing points.

The number of panels configuration of gambrel room in attic polynesian duo pitch dual slope double pitch tri bearing clear story vault slope slope coffer cove studio with three bearing points studio with two bearing points. The point on the truss where the top and bottom chords intersect. Bearing widththe width dimension of the member providing support for the truss usually 3 1 2 or 5 1 2. Illustrated on this chart are a representative sampling.

Most exterior walls bear some load of a house while interior load bearing walls can typically be parallel to the roof ridge of the home and tend to run perpendicular to the floor joists. Bearing must occur at a truss joint location. That truss appears to only have two load bearing points. Structural support of trusses usually walls normally with a timber wall plate.

Trusses are also marked at the load points when manufactured. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e. The roof structure and second floor structure defines largely where load bearing points are located. Some structures that span between these grounding points are known as load bearing walls beams headers trusses or lintels.

Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. The wood truss configurations for the actual truss design. One top plate and a space between the bottom chord of the truss and the top of the wall non load bearing. If there are two plates refer to an engineer.

Chances are this is a non bearing wall. The wall plate width see figure 7. Bearing cut or seat cut. Actually a quick way to determine if the wall is bearing is to cut hole at the top to see if it has one or two top plates.

Extension of the top chord of a truss beyond the outside of the bearing support. The cantilever dimension is measured from the outside face of the support to the heel joint. It appears that the truss was too low once it spanned the high ceiling area and the clearance was elevated to create a vaulted ceiling at the top of the stairwell. Cantilever that structural portion of a truss which extends beyond the support.

I would still call the architect to verify. Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.