Roof Truss Support Walls

A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall.

Roof truss support walls.

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. Bracing for putting up trusses as each truss is put up on top of opposite walls it must be put up straight and supported while the next truss is put up. Inclined or horizontal member that establishes the bottom of a truss usually carrying combined tension and bending stresses. Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located.

A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches. Nearly all types of trusses used in roofs from kingpost and queenpost to bowstring and cambered possess a central support beam. Usually trusses are put 24 inches apart. Some roof truss types such as stub and dual pitch contain no center and therefore lack central support.

Gable trusses are more expensive than common structural trusses because more lumber is required. As with any question individual building designs can differ and just because a. Structural support usually a beam or wall that is designed by the building designer to carry the truss reaction loads to the foundation. We usually build on the exterior walls set the trusses and do all of the chord blocking and truss bracing before building the interior walls since it is easier to roll a scaffold around on an empty open floor.