Metal sheeting 2

[phuduhudu]

I have a situation where I have very large windloads on metal sheeting. For the IBR sheeting I have always used the manufacturers tables of purlin spacing previously. However, they have a limit on the windloads and my loads in this case are far in excess of those limits. Has anyone worked out metal sheet spanning capabilities from scratch. I guess that the limiting factor is local buckling of the thin sheet. Any ideas on how to figure out the limiting stress in a profiled thin sheet?

 

[hokie66]

Mike,

Phuduhudu didn't understand your question because he is not using the roof cladding as a diaphragm. It is just roofing, takes only load normal to the surface.

 

[msquared48]

Aah... Thanks.

Mike McCann
MMC Engineering