ANTI SAG SUPPORT FOR NON RESTRAINING ROOF CLADDING

Use of Load Tables with non restraining cladding
The standard Load Tables assume the top flange is fully restrained and may NOT be used where non restraining cladding is involved. A separate set of tables is available for this situation. These make allowance for the unrestrained nature of the flange. Please contact Duggan Profiles for appropriate loadings.

Anti sag support requirements for non restraining roof cladding
Construction details:

Span (M): Up to 6.1m

For spans up to and including 6.1m anti sag supports are recommended at: Mid Span

Components: Angle Struts are used to support the purlins with the load transferred to the structure by a combination of Apex Ties and Tie Ropes.

Note on above: Supports are generally not required for spans less than 3m

Restraints for Bays over 6.1m up to 9m

Span (M): 6.1 – 9m
For spans greater than 6.1m up to and including 9m anti sag supports are recommended at: 1/3 Points

Components: Angle Struts are used to support the purlins with the load transferred to the structure by a combination of Apex Ties and Tie Ropes.