Rules for Openings in Obstructed Construction Apply Only to Small Beam Pockets?

Curious if others interpret the obstructed construction rule the same way I do.

I've seen and heard quite a bit of dispute on how Obstructed Construction should be applied to solid beams with corrugated metal deck above (when applied perpendicular to the beams in question). So the definition of obstructed construction is really defined by applying what unobstructed construction isn't.

In summary, obstructed construction is solid members (or members less than 70% open) that are spaced less than 7-1/2 on center. That would lead you to believe that openings of 29.99% are permitted as long as members are less than 7-1/2' on center.

If you go to the appendix, it offers a LOT more information on types of obstructed construction, one of those being panel construction. There it mentions that (pockets) 300 sqft or less can also be obstructed construction, even with members more than 7-1/2' on center, as long as NO openings are allowed, including at the beam to ceiling interface.

I take this opening rule as only applying to when the 300 sqft exception is being used and where beams are more than 7-1/2' on center. Is this how you interpret this section? 

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