Engineered Roof Trusses Load Bearing Walls

By contrast a non load bearing wall sometimes called a partition wall is responsible only for holding up itself.

Engineered roof trusses load bearing walls.

Trusses unless a special girder truss which accepts the loads of attached trusses have no interior load bearing walls. Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located. Some spans have a lower rate per foot than others. Johnson got it right.

Load bearing walls support the weight of a floor or roof structure above and are so named because they bear a load. Factors that affect truss pricing and cost. The span in short is the length of the bottom of the truss. Engineered trusses tend to be designed to span from exterior wall to exterior wall.

This is the distance of the bottom chord of the truss from outside overhang of bearing wall to outside of the other bearing wall. If all the trusses are identical they can t be load bearing with walls in three different spots. The first and second floors have 13 5 9 and 9 5 spans add the 6 per bearing wall and each exterior wall you get 33. They are the walls that carry the weight of the home.

Load bearing walls are fairly self explanatory. If there is a column that supports the truss found in the wall the wall still would not be load bearing because the column is taking the load. Usually load bearing interior walls support the structure above directly by the components of the wall. These are structurally engineered not only to bear the weight and stress of a home but also to resist earthquakes heavy winds and other weather related events.

Stick built roofs tend to only span about the same distance as floor joists and would require load bearing interior walls to support them. The roof trusses span the whole distance. Technically the interior partition walls shouldn t even be touching the truss bottom cord during rough in but they usually are. We built our own home and it is about 33 wide.

For example a gable end truss may be designed with support members that transmit the roof weight load outward to the side walls allowing the end wall directly below it to have breaks or openings in it that would otherwise be impossible.