"Jeff Wisnia" wrote in message
. ..
J.Lef wrote:
The wife went out to ikea and came back with a 200 lb bookcase.
After spending the better part of 10 hours putting it together, I
was ready to mount it to wall for safety.
The bookcase will be close to 700 pounds heavy when full.
I stripped off the carpeting section, and actually took off the
bottom molding to insure a close fit.
The unit has two sort of L brackets(one at either top end )that is
attached to unit with two screws and then they expect you to mount to
wall with one large cutout hole, with a sort of washer/lock that has a
big hole and small locking hole.
For these jobs, I usually encounter a wall which is hollow after
drilling through and I would use a toggle bolt to insure the safety with
this weight.
When I starting drilling in, after about an inch, I realized I
was into something the drill bit wouldnt penetrate.
It wasnt a wood beam, thats for sure, or a wood stud.
I went to the other side of book case and tried that side(six feet
apart) and got same result. I tried two smaller pilot holes in various
locations and everything is that way, so I am assuming I am hitting
concrete/cement, as a beam I dont think would be that large.
How do I mount this unit, into concrete if that is what I am
looking at. I dont believe its brick or metal.
Thanks for any info provided. Much regards

Get yourself some "Tapcon" concrete screws and a masonry drill sized to
fit them.

Or use screw type expanding concrete anchors and get a masonry drill to
fit them.

This page may give you some more ideas:

http://tinyurl.com/3azcwr

Nobody else said it, so I will- OP should make sure this isn't a 'wet wall',
and he isn't drilling into iron waste stacks or something. Is this a house
or a condo? If the latter, I suspect he is hitting a fire break wall between
his unit and the next one. (Concrete block wall, with furring and drywall
over.) If a house, is this backing up to a chimney stack or something? Or is
this an older house of actual brick construction, and he is mounting on
old-style plaster over masonary work?

aem sends....