Roof Truss Stress Points

When high winds hit.

Roof truss stress points.

The bending stresses about both. Roofs are designed to withstand weight and tension by dispersing it over trusses or rafters. 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. A percentage increase in the stress permitted in a member based on the duration of the load causing the stress acts on the 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. 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. Apex peak the uppermost point of a truss.

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 normal rainfall typically won t cause damage to your roof unless it has already been undermined by other weather. Bowstring trusses are usually analysed for direct stress as though the top chord were in a straight line between panel points. Axial force a push compression or pull tension acting along the length of a member.

Stress points can indicate signs of roof damage winds. A roof truss consists essentially of the following components. Top chords may be glued laminated fig.