Mark Jerde asks:


In my home office I have 3 sets of 3 eight foot bookshelves attached to the
wall studs with 2" drywall screws. The shelves are chocked full of mainly
computer programming books, dunno, maybe 1000 lbs on each set of the 3
shelves. They've been up for several years. Any reason I should be
worried? (I don't recall for sure, but I probably drilled a hole for most
of the length before putting in the screws.)

Half a ton? Books are heavy, but that's still a lot of books. If the screws
haven't sheared off by now, I'd forget it. I think. Then again, I might run in
some other type of steel screws just to be safe.

Hope you're not in earthquake country.

Charlie Self
"I hope our wisdom will grow with our power, and teach us, that the less we use
our power the greater it will be." Thomas Jefferson