Roof Truss Stress Points

Hence the length of the purlin is equal to the width of the bay i e the spacing of the trusses.

Roof truss stress points.

Stress points can indicate signs of roof damage winds. Battens purlins timber sections spanning trusses to support roof covering. 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. For bundles of trusses greater than 45 and up to 60 in length at least two lift points are required.

The bending stresses about both. Axial force a push compression or pull tension acting along the length of a member. Roofs are designed to withstand weight and tension by dispersing it over trusses or rafters. When high winds hit.

Bowstring trusses are usually analysed for direct stress as though the top chord were in a straight line between panel points. Apex peak the uppermost point of a truss. Top chords may be glued laminated fig. 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.

A roof truss consists essentially of the following components. For bundles of trusses greater than 45 and up to 60 in length at least two lift points are required. 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.