Wall anchors say that they are rated for x number of pounds.
My questions are:
Is that “per anchor”? And, if so, how accurate is it? And up to what point?
For example: if I had 100 wall anchors rated for 100 lbs in drywall, and I distributed them evenly over a large space on my wall, could I hang a car? Doesn’t seem likely, but I don’t know.
Practically, I’m hanging shelves, and I may be placing some heavy stuff on them. I want to know how much weight I can with certainty say they can hold, given that I’m using less than the calculated weight limit for the anchors for drywall.
In short, is there a weight at which anchor specifications become unreliable? And if so, approximately what is it?