I've put up my own shelves with proper brackets. But I see these "floating shelves" advertised. I thought, "What's holding them up?" Apparently there's no right angle involved, just a screw going straight into the back of the shelf out of the wall. How can that possibly support anything?
But proper shelves have an angled bracket which can hold a lot of weight. Nothing without a 45 degree support can hold weight. Just try holding a car battery at arms length. Now support your arm at your elbow by using the other arm at 45 degrees.
But plenty don't need to hold a lot of weight and prefer the cleaner
look of a floating shelf which has no visible brackets at all.
That's wrong too. I do mine that need to hold a lot of weigh
with a floor to ceiling rectangular welded frames made of
dexion slotted tubing with shelves that are fully adjustable
on 25mm spacings with the frames bolted to the walls.
Whatever the route, I can say with great confidence that the wall does
provide a load path all the way down to the footings. Adding a floating
shelf puts a relatively small bending moment on the wall at the anchor
points, that's all.
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Furthermore, you'll need to get a building permit and have the shelves inspected by the AHJ.
Failure to comply could result in fines and your insurance company could refuse to pay the claim if your house falls over.
Brian prefers you reply at the top.
I have freestanding dexion shelves in the garage, several shelves in the house made of wood and proper mitred supports, and in the bathroom normal little glass shelves with proper attachments which aren't invisible and can take weight.
Or anyone, as the stuff on the shelf is now on the floor broken into pieces.
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