NFPA 13 (2016 Edition) Section 18.104.22.168.1 states:
22.214.171.124.1 Branch line hangers attached to metal deck shall be permitted only for the support of pipe 1 inch of smaller in size, by drilling or punching the vertical portion of the metal deck and using through bolts.
The Sammy X-Press has listed hangers that call out attachment directly to metal deck for pipe up through 4" in some cases.
From a code perspective, does the section above not apply, or would this be a code approved alternative? Just looking for the code logic that would allow use of listed special materials where the section above wouldn't trump this method.
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