COP v3.0:structure; steel-cladding-wind-load-span-graphs

3.17 Steel Cladding Wind Load Span Graphs 

Wind Load span graphs should be read in conjunction with the constraint of access and the span at which the point load will be the limiting factor.

The performance of profiled metal cladding depends on the profile shape, thickness of the metal, the span, and the fastening type and pattern. These values can be greatly enhanced by using load spreading washers or thicker material.

All the tests from which these graphs have been derived used the 2:3 ratio of end to intermediate span and the graphs shown are for intermediate spans only. End spans must be reduced by two-thirds for these values to be assumed.

3.17.1 Corrugated Steel – 0.40 

 

3.17.1B

Recommended Point Load LimitSpan
Type AUnrestricted AccessN/A
Type BRestricted Access0.9 m

 

 

3.17.2 Corrugated Steel – 0.55 

 

3.17.2B

Recommended Point Load LimitSpan
Type AUnrestricted Access1.2 m
Type BRestricted Access1.5 m

 

3.17.3  Trapezoidal Five Rib Steel – 0.40  

 

3.17.3B

Recommended Point Load LimitSpan
Type AUnrestricted AccessN/A
Type BRestricted Access1.4 m

 

3.17.4 Trapezoidal Five Rib Steel – 0.55 

 

3.17.4B

Recommended Point Load LimitSpan
Type AUnrestricted Access1.5 m
Type BRestricted Access2.1 m

 

3.17.5 Trapezoidal Six Rib Steel – 0.40  

 

3.17.5B

Recommended Point Load LimitSpan
Type AUnrestricted AccessN/A
Type BRestricted Access1.5 m

 

3.17.6 Trapezoidal Six Rib Steel – 0.55  

 

3.17.6B

Recommended Point Load LimitSpan
Type AUnrestricted Access1.5 m
Type BRestricted Access2.2 m