On Jun 30, 11:26 am, RicodJour wrote:
On Jun 30, 10:06 am, dpb wrote:



George wrote:
wrote:

...

WTF? Am I missing something? This is run of the mill garage floor
concrete, the direction say drill a damn hole and use a screwdriver to
sink it in? Should I try oil lubrication? My floor has several holes
with snapped off anchors now.

Time to review the instructions. You are supposed to power drive them
with the suggested driver tool.

Hammer-drill/driver may help, too.

Me? I'd go w/ powder-actuated myself and toss the tapcon's in the "nice
theory, no good in practice" pile along w/ the various other things over
the years...

imo, ymmv, $0.02, etc., ...

If you're driving Tapcons with a hammer drill, that might be why you
haven't had much success with them. Try an impact driver.

R

Another thing that helps is when you are drilling the hole, run the
drill up and down a few times to ream out the hole a bit. Tapcons
have always worked fine for me--I've tossed a powder actuated gun in
the dumpster in a fit of rage before, so they sure aren't a panacea--
jams, spalling, underdriven fasteners are all problems. (unless you
spend the money and get a Hilti). For instances where you are
primarily concerned about shear, I like drive in pegs or rawls for
ease of use and low tech simplicity.. Using a manual screwdriver on a
tapcon sounds like a hard way to serve the Lord.