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RE: Steel Deck Diaphragms

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Personal preference is to use 6.35 mm (0.25 inch) self-tapping screws into
OWSJ.  Pre-drilling is required into material more than 6 mm thick.  Use
every flute, two at lap. 
 

Paul Meyer 
250-368-2407 
pmeyer(--nospam--at)hasimons.com <mailto:pmeyer(--nospam--at)hasimons.com>  

we always have uses the puddle welds due to local erectors resistance to it,
but: 
how many out there are specifying the required usage of powder actuated
mechanical deck fastening ? hilti ENKP pins, etc ? in lieu of the good old
puddle weld ?