Hello, I'm about to fix a 20 foot aluminium pole to a couple T+K standoff
brackets about 1.5meters apart and standoff about 16 inchs I'm wondering
what size of Rawbolts to use ?? I'm think 12mm ??? Oh yes on the pole would
be a 2/70cm co-liner and a 66ft longwire on a pulley no great size or weight

Any advise links would be good !

Thanks

On 8/1/2011 8:29 AM, Dave wrote:
Hello, I'm about to fix a 20 foot aluminium pole to a couple T+K
standoff brackets about 1.5meters apart and standoff about 16 inchs I'm
wondering what size of Rawbolts to use ?? I'm think 12mm ??? Oh yes on
the pole would be a 2/70cm co-liner and a 66ft longwire on a pulley no
great size or weight

Any advise links would be good !

Thanks


I think that 12mm will be just fine. I'm in the US and some of your
terminology is a bit obscure to me, in particular "rawbolts" and "T+K
standoff". But I'm bilingual, I speak inches and meters so bolts of that
size should hold that short of mast up just fine if the standoffs are up
to the task.

John W3JXP

"John Passaneau" wrote in message
...
On 8/1/2011 8:29 AM, Dave wrote:
Hello, I'm about to fix a 20 foot aluminium pole to a couple T+K
standoff brackets about 1.5meters apart and standoff about 16 inchs I'm
wondering what size of Rawbolts to use ?? I'm think 12mm ??? Oh yes on
the pole would be a 2/70cm co-liner and a 66ft longwire on a pulley no
great size or weight

Any advise links would be good !

Thanks


I think that 12mm will be just fine. I'm in the US and some of your
terminology is a bit obscure to me, in particular "rawbolts" and "T+K
standoff". But I'm bilingual, I speak inches and meters so bolts of that
size should hold that short of mast up just fine if the standoffs are up
to the task.

John W3JXP

Thanks John, You've already guessed I think that I'm in the UK where we seem
to mix up units of everything quite happily millimetres', inch's, pints,
litres, Km, miles

Anyway back on topic the T+K bracketts are just the shape T at the top and K
shape at the bottom. One thing I forgot to add was the wall type it's a
'breeze block' construction or cemet block I think that's a cinder block in
the US, and the wall has a filled cavity.

Dave G6ZKC

On 8/1/2011 6:39 PM, John Passaneau wrote:
On 8/1/2011 8:29 AM, Dave wrote:
Hello, I'm about to fix a 20 foot aluminium pole to a couple T+K
standoff brackets about 1.5meters apart and standoff about 16 inchs I'm
wondering what size of Rawbolts to use ?? I'm think 12mm ??? Oh yes on
the pole would be a 2/70cm co-liner and a 66ft longwire on a pulley no
great size or weight

Any advise links would be good !

Thanks


I think that 12mm will be just fine. I'm in the US and some of your
terminology is a bit obscure to me, in particular "rawbolts" and "T+K
standoff". But I'm bilingual, I speak inches and meters so bolts of that
size should hold that short of mast up just fine if the standoffs are up
to the task.

John W3JXP

It's Rawlbolt. It is a brand of expanding anchor.

On 2 Aug,
"Dave" wrote:

Anyway back on topic the T+K bracketts are just the shape T at the top and
K shape at the bottom. One thing I forgot to add was the wall type it's a
'breeze block' construction or cemet block I think that's a cinder block in
the US, and the wall has a filled cavity.

I used 10mm resin anchors for a similar installation into brick, they have
the advantage of being less likely to crack the brick as compared to
expanding/rawl bolts. Breeze block is a dubious material, depending on it's
strength it may or may not be ok. If it is a dense concrete block you should
be ok, but I'd recommend resin type anchors anyway. I got mine from screwfix.
--
BD
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wrote in message ...
On 2 Aug,
"Dave" wrote:

Anyway back on topic the T+K bracketts are just the shape T at the top
and
K shape at the bottom. One thing I forgot to add was the wall type it's
a
'breeze block' construction or cemet block I think that's a cinder block
in
the US, and the wall has a filled cavity.

I used 10mm resin anchors for a similar installation into brick, they have
the advantage of being less likely to crack the brick as compared to
expanding/rawl bolts. Breeze block is a dubious material, depending on
it's
strength it may or may not be ok. If it is a dense concrete block you
should
be ok, but I'd recommend resin type anchors anyway. I got mine from
screwfix.
--
BD
Change lycos to yahoo to reply

Funnily enough I was just looking into chemical (resin) fixings - do you
have a link for the screwfix anchors you used ?

I have in the past used rawbolt's and indeed split the wall, well the ones
near the top, a low thump as I tightened them up. They seemed ok with no
problem afterwards with a 2m 10XY and a 88ele 70cm beams (this was my mum &
dads house!)

Dave

On 2 Aug,
"Dave" wrote:

Funnily enough I was just looking into chemical (resin) fixings - do you
have a link for the screwfix anchors you used ?

Looks like it was from Toolstation rathr than Screwfix (local branches are
next door to each other):
http://www.toolstation.com/shop/Screws+Fixings/Chemical+Fixings/Resin+Bolt+Stud+Fix+300ml/d90/sd1960/p11337

--
BD
Change lycos to yahoo to reply

wrote in message ...
On 2 Aug,
"Dave" wrote:

Funnily enough I was just looking into chemical (resin) fixings - do you
have a link for the screwfix anchors you used ?

Looks like it was from Toolstation rathr than Screwfix (local branches are
next door to each other):
http://www.toolstation.com/shop/Screws+Fixings/Chemical+Fixings/Resin+Bolt+Stud+Fix+300ml/d90/sd1960/p11337

--
BD
Change lycos to yahoo to reply

Thanks, looks cheaper than Screwfix. Did you use a normal 'frame' with the
resin, I think some of them need a stronger frame because of the viscous
nature of the resin. Looking at the spec this resin is really strong stuff I
didn't realise how strong it was - about 2800Kg tensile strength on a 10mm
bolt !....