What protective device is required for a floor opening that measures at least 12 in and its least dimension?

Well, you know what they say, "safety first, jokes second!" A floor opening that measures at least 12 inches in its least dimension should have a sturdy and reliable floor cover. You don't want anyone accidentally taking a tumble into a hole. And no, a sign that says "Watch Your Step" is not a suitable protective device, unless you want to remind people that gravity is always lurking around the corner. So, let's make sure to secure that opening with a proper floor cover to keep everyone on their toes and off their bottoms!

The protective device required for a floor opening that measures at least 12 inches in its least dimension is a standard railing.