fasten stainless steel plates into cement floor

I am installing a stainless steel (SS) cable shelving system in a retail space.
I have multiple circular SS plates which i need to inset flush and fasten to an existing concrete floor. What is the best way to affix these plates in a secure way? The research i've done thus far suggested that when using masonary screws, a minimum distance of 5 times the diameter of the screw should be maintained between screws to conserve the integrity of the concrete floor, however the plate is only 2" in diameter.
thanks
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allpurpose wrote:

There are powder actuated fastening tools which are designed for this purpose. It uses the equivalent of a .22 cartridge to shoot masonry nails.
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How much load will these be bearing? And will the load be perpendicular to the floor?
Flank allpurpose wrote:

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wrote:

Drill a 2" hole, fill it with epoxy, and set the screws in that?
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