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Fastening of Z Purlins

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btemple

btemple

Structural
Joined
Mar 27, 2007
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4
Does a light gauge meta z purlin have any capacity if the top flange of the purlin is not attached to the roof decking?
 
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It would still have capacity just less than when braced. This comment is based on the top flange in compression
 
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How do you determine how much capacity?
 
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Would the purline feel any stress if the roof pannel flew away?
 
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To determine capacity you would need to refer to the AISI code. Lots of equations for calculating capacities based on unbraced lengths
 
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