On 2006-11-20 20:28:11 +0000, "Antix" said:

ahhh :-) well, maybe not such a far out idea !

ok...so far I'm sort of leaning to the idea of a sleeve anchor....the
1/4 inchers by all accounts stand up to 500lbs or so 'pull out' and i'd
have 3 of those which would hopefully give me a good degree of
leaway...but I'm certainly concerned about the condition of the bricks
which I haven't uncovered yet (but will !). How does resin compare to a
sleeve anchor ?

Way superior.

Keep in mind that the claimed pulling force is completely dependent on
the brick not having cracked or crumbled at all and your having drilled
the hole perfectly with no wobble removing extra material.
Resin is not at all dependent on that. It doesn't matter if the hole
is a bit too large and there is no possibility of the brick being
stressed and cracked as it can be when a sleeve anchor is tightened.




now...not such a far out idea above becuase I am planning on removing a
brick from the wall to provide a hole to drop the AV cables through
(along with another brick at the base of the wall as the outlet)....so
there is 'some' potential to access the rear side of the wall (albeit
with shredding most of the skin off my hand fiddling around trying to
attach the nut to the back end of a bolt I've poked through...and a few
tens of nuts and washers in the proces :-) ). I'm thinking, no lateral
pressure from an expanding bolt on the brickwork is a good thing, and
no reliance on a resin I've never used before, and providing I can
actually reach the end of the bolt with my hand/arm through a single
brick hold, it'd give me a hell of a lot of peace of mind....Any
thoughts on this approach ? ideas on what to use as a stud/bolt or what
to use on the rear (just washers ? or are there special things I can
get ?)...anyone able to tell me how far through a singl brick hold I'm
likely to get my arm !! :-)

I think that you would need to remove more than one brick and you
wouldn't be able to reach very far. The cavity between the walls is
likely to not be much more than about 50mm. You can easily test that
by drilling a small hole through (mark drill carefully as it reaches
the cavity) and then poking a piece of wire in until it touches the
other wall. Subtract and that's the cavity depth. I think that you
would need to take out at least two bricks to do what you are
suggesting.

I was also sceptical about the resin stuff before I tried it (quite
recently). So I bought some and did a test run on something that
wasn't critical. I loaded that up with three times the weight and
force that I calculated would be needed in the critical application and
it was completely fine.

Up to you, but if I were doing this job, that's what I'd use without
further thought.




(it's a partition between my part of the house and the neighbour so I'm
not tooooo worried about condensation dripping down the cables...I'll
work around it if it happens and I'm more happy to replace cables if
they deteriorate than have the kit fall off the wall)

Ant.