Roof Truss Support Walls

Structural support usually a beam or wall that is designed by the building designer to carry the truss reaction loads to the foundation.

Roof truss support walls.

To hold them up until the decking of the roof is placed on top a 12 foot 1 inch by 4 inch piece of lumber is used. Nearly all types of trusses used in roofs from kingpost and queenpost to bowstring and cambered possess a central support beam. Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located. 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.

A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches. 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. 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. A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall.

Elements that make a roof truss. Inclined or horizontal member that establishes the bottom of a truss usually carrying combined tension and bending stresses. Most simple construction truss roof home s roof and trusses are supported by the exterior walls perpendicular to the trusses. Some roof truss types such as stub and dual pitch contain no center and therefore lack central support.