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E L E C T R I C A L CO N N E C T I O N
S P R I N G 2 0 16
TIPS
A
nthony Maunder used to work
as a builder who did a lot of retail
fit-outs for supermarket chains
and shopping centres. He got fed up with
seeing core holes that had undergone
dodgy patch-jobs with paper bags, old bits
of ply or whatever else happened to be
lying around.
“On some jobs – like if a supermarket
wanted to move the fridges after the holes
had been drilled – you’d get up to about
120 core holes needing to be filled. The
amount of different ways I’d seen them
repaired, and all the horror stories I’d
heard where plugs have fallen out, made
me think ‘there’s got to be a better way
than this,’” says Anthony.
This frustration motivated Anthony to
come up with a unique idea. He then took
his idea to his engineer and together they
designed, and later patented, a core hole
repair system that is quite different from
anything else on the market.
Anthony’s ADM Core Hole Repair Kit,
is comprised of a steel plate that plugs
the bottom of the hole and a cap piece
that bridges the top, these are joined by a
threaded bar. The kit also includes grout
to fill the plugged hole.
The kit can be installed in four steps:
STEP 1
ǩ
Place the repair kit head piece in
the centre of the hole, mark a 10mm
clearance and chase the marked area
of concrete out .
STEP 2
ǩ
Measure the hole’s depth and cut the
threaded rod length before screwing
the rod into the repair kit head piece.
STEP 3
ǩ
Apply a bead of silicone or similar
product around the repair kit
cap piece and push onto the slab with
the threaded rod protruding through the
cap hole. Then put the nut and washer
onto the threaded rod and tighten.
STEP 4
ǩ
Mix the supplied grout wand pour into
the core hole before finishing with a
trowel.
The system keeps the floor surface
flush and trafficable and maintains the
structural integrity of the slab and has
also been fire tested to four hours by the
CSIRO in accordance with AS1530.4:2005.
“Hopefully it’ll keep gaining momentum.
We do get a lot of cowboys who still say ‘I
don’t want that crap. I’ll just do it the old
way.’ But in the building industry we just
can’t do that anymore – things have got to
be done properly,” says Anthony.
Several large builders like Watpac and
Hutchinson are already using the ADM
Core Hole Repair Kit because, according
to Anthony, they realise that any costs
incurred up front are quickly offset but
labour time saved and the uniformity of
the end result.
>
Core Hole Solutions
www.coreholesolutions.com.auA HOLE IN ONE
Every now and again a simple,
solid solution to a common
problem comes along that has
everyone else in the industry
asking themselves ‘why the
hell didn’t I think of that?’
Jacob
Harris
explains.