Roof Truss Stress Points

The bending stresses about both.

Roof truss stress points.

For bundles of trusses greater than 45 and up to 60 in length at least two lift points are required. Battens purlins timber sections spanning trusses to support roof covering. Trusses that are banded together into a bundle are stiffer in comparison to a single truss but lifting a bundle of trusses by the peak can still cause undue stress and damage. Roofs are designed to withstand weight and tension by dispersing it over trusses or rafters.

Trusses that are banded together into a bundle are stiffer in comparison to a single truss but lifting a bundle of trusses by the peak can still cause undue stress and damage. Apex peak the uppermost point of a truss. Top chords may be glued laminated fig. For bundles of trusses greater than 45 and up to 60 in length at least two lift points are required.

Spanning from truss to truss which is meant to carry the load of the roofing material and to transfer it on the panel points is called a purlin. When high winds hit. A roof truss consists essentially of the following components. Hence the length of the purlin is equal to the width of the bay i e the spacing of the trusses.

Axial force a push compression or pull tension acting along the length of a member. 1 to the curvature or may be solid timbers laid to the curved pattern with or without their top surfaces sawed to the curvature fig. A normal rainfall typically won t cause damage to your roof unless it has already been undermined by other weather.