I've got something that needs to be bolted down to the garage floor, but
which needs enough working space around it that it's going to be a PITA
if bolted down permanently. So I'm thinking in terms of putting fixings
into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but are they designed for repeated use, or are they
effectively one-shot?

Thoughts gratefully received. The fixings won't be receiving heavy-heavy
loads, mainly preventing rotational torque. (It's a manual car tyre-
fitting machine)

On 24/01/2015 10:43, Adrian wrote:
I've got something that needs to be bolted down to the garage floor, but
which needs enough working space around it that it's going to be a PITA
if bolted down permanently. So I'm thinking in terms of putting fixings
into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but are they designed for repeated use, or are they
effectively one-shot?

Thoughts gratefully received. The fixings won't be receiving heavy-heavy
loads, mainly preventing rotational torque. (It's a manual car tyre-
fitting machine)

Drop in anchors should do the job
http://www.screwfix.com/c/screws-nai...ors/cat7290020

--
Dave - The Medway Handyman www.medwayhandyman.co.uk

On 24/01/2015 10:43, Adrian wrote:
I've got something that needs to be bolted down to the garage floor, but
which needs enough working space around it that it's going to be a PITA
if bolted down permanently. So I'm thinking in terms of putting fixings
into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but are they designed for repeated use, or are they
effectively one-shot?

Thoughts gratefully received. The fixings won't be receiving heavy-heavy
loads, mainly preventing rotational torque. (It's a manual car tyre-
fitting machine)


Rawlbolts can be bolted and unbolted at will and, if you screw the bolt
in part way and hit the head with a hammer, they can even be removed
when you no longer want them. As for filling with dirt, that will depend
upon how clean the environment is.

--
Colin Bignell

On Sat, 24 Jan 2015 11:00:31 +0000, Nightjar "cpb"@ wrote:

Rawlbolts can be bolted and unbolted at will and, if you screw the bolt
in part way and hit the head with a hammer, they can even be removed
when you no longer want them. As for filling with dirt, that will depend
upon how clean the environment is.

Thanks, Colin, and to TMH.

In article , Adrian
writes
On Sat, 24 Jan 2015 11:00:31 +0000, Nightjar "cpb"@ wrote:

Rawlbolts can be bolted and unbolted at will and, if you screw the bolt
in part way and hit the head with a hammer, they can even be removed
when you no longer want them. As for filling with dirt, that will depend
upon how clean the environment is.

Thanks, Colin, and to TMH.

A final alternative is a resin socket (the opposite of a resin stud):

http://www.tooled-up.com/microcat/in...-sockets/3541/

IMV less likely to lose grip with repeated tightening and loosening
cycles.

Like any floor mounted socket they will fill up with crap so fill with a
plastic plug or grub screw when not in use.
--
fred
it's a ba-na-na . . . .

On 24/01/2015 10:43, Adrian wrote:
I've got something that needs to be bolted down to the garage floor, but
which needs enough working space around it that it's going to be a PITA
if bolted down permanently. So I'm thinking in terms of putting fixings
into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but

That's a hell of a trip hazard? Our garage door does not stop dirt and
leaves getting in, so the holes would fill with crud pretty quickly.

Ideally, you want something that can be screwed in level with the garage
floor when not in use. I was wondering about making U-shaped slots in
the feet of your tyre device. Then raise the bolt heads, slide the feet
under the bolt heads, and tighten down.

Rawlbolts would do, but a socket 'glued' in place would be better.

On 24/01/15 12:07, GB wrote:
On 24/01/2015 10:43, Adrian wrote:
I've got something that needs to be bolted down to the garage floor, but
which needs enough working space around it that it's going to be a PITA
if bolted down permanently. So I'm thinking in terms of putting fixings
into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but

That's a hell of a trip hazard? Our garage door does not stop dirt and
leaves getting in, so the holes would fill with crud pretty quickly.

Ideally, you want something that can be screwed in level with the garage
floor when not in use. I was wondering about making U-shaped slots in
the feet of your tyre device. Then raise the bolt heads, slide the feet
under the bolt heads, and tighten down.

I would cut the head off a stainless bolt or stud and cut a slot in so
it could be glued in flush.

Rawlbolts would do, but a socket 'glued' in place would be better.

Resin/chemical sockets are the name:

http://www.ukfixings.net/Internal-Threaded-Sockets/

Well, concrete is strong under compression, but weak in almost all other
ways, so whatever you put in would need to have a large area in contact with
the concrete to be reliable in the first place.

IE I'd dig a hole and put something down with all the fixing points joined
together inside a bloody big chunk of concrete!


Brian

--
From the Sofa of Brian Gaff Reply address is active
"Adrian" wrote in message
...
I've got something that needs to be bolted down to the garage floor, but
which needs enough working space around it that it's going to be a PITA
if bolted down permanently. So I'm thinking in terms of putting fixings
into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but are they designed for repeated use, or are they
effectively one-shot?

Thoughts gratefully received. The fixings won't be receiving heavy-heavy
loads, mainly preventing rotational torque. (It's a manual car tyre-
fitting machine)

On 24/01/15 12:53, Brian Gaff wrote:
Well, concrete is strong under compression, but weak in almost all other
ways, so whatever you put in would need to have a large area in contact with
the concrete to be reliable in the first place.

IE I'd dig a hole and put something down with all the fixing points joined
together inside a bloody big chunk of concrete!


I'll respectfully disagree.

I've seen some very big industrial robots bolted into an ordinary
workshop concrete floor after the fact.

Concrete is weak in tension and also in bending (for the same reason) if
unreinforced.

However, trying to pull a lump out of the middle of a slab will be
extremely hard, unless the bolts are ridiculously shallow in which case
it might pull a cone shaped lump out the surface.

Depending on what's being bolted down and how thick the slab is, I would
be happy with 3+ inch resin sockets set in. 2" if it's something not
exerting any turning/pulling forces.

If this is a car lift, then seek better advice! But it sounds unlikely
as you don;t tend to remove those.

For the resin, use cheap Screwfix NoNonsense resin - this is actually
pretty good stuff if you don't need some particular performance aspect
of one of the fancy Fischer products.

Blow the hole out after drilling *hard* with a pipe that goes right in -
you need to get all the dust out. A hoover will not be good enough.

Personally I degrease the fixings too - hot water and a bit of washing
liquid or some alcohol.

On Sat, 24 Jan 2015 12:53:06 +0000, Brian Gaff wrote:

Well, concrete is strong under compression, but weak in almost all other
ways, so whatever you put in would need to have a large area in contact
with the concrete to be reliable in the first place.

IE I'd dig a hole and put something down with all the fixing points
joined together inside a bloody big chunk of concrete!

Mebbe a tad overkill! grin

On Sat, 24 Jan 2015 12:07:57 +0000, GB wrote:

On 24/01/2015 10:43, Adrian wrote:
I've got something that needs to be bolted down to the garage floor,
but which needs enough working space around it that it's going to be a
PITA if bolted down permanently. So I'm thinking in terms of putting
fixings into the floor which I'll bolt it to as needed.

Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill
with dirt and crap? It makes sense to put the bolts back in the fixings
to help stop that, but

That's a hell of a trip hazard?

Four bolt heads sitting just proud of the floor?

Our garage door does not stop dirt and leaves getting in, so the holes
would fill with crud pretty quickly.

Yeh, that's what I'm thinking.

Ideally, you want something that can be screwed in level with the garage
floor when not in use. I was wondering about making U-shaped slots in
the feet of your tyre device. Then raise the bolt heads, slide the feet
under the bolt heads, and tighten down.

The device in question is one of these :-
http://www.amazon.co.uk/Sealey-TC960...-Operation/dp/
B000ROBCT2

The four legs each have bolt holes. People have reported having success
just bolting them to a wooden pallet - without being bolted to anything,
you just don't get enough force on the lever.

On 24 Jan 2015, fred grunted:

A final alternative is a resin socket (the opposite of a resin stud):

http://www.tooled-up.com/microcat/in...-sockets/3541/

Blimey, never heard of those. I can think of several times in the past
where it would have been really good to haved use those in place of resin
studs!

--
David

On 24/01/15 15:57, Lobster wrote:
On 24 Jan 2015, fred grunted:

A final alternative is a resin socket (the opposite of a resin stud):

http://www.tooled-up.com/microcat/in...-sockets/3541/

Blimey, never heard of those. I can think of several times in the past
where it would have been really good to haved use those in place of resin
studs!


Me too -

I have a use or two coming up that would suit these

In article ,
Adrian wrote:
Looking at concrete fixings, the question that comes to mind is what'll
happen when they're not in use. Will they come loose? Will they fill with
dirt and crap? It makes sense to put the bolts back in the fixings to
help stop that, but are they designed for repeated use, or are they
effectively one-shot?

Assuming the concrete is reasonably thick, I'd just use Rawlbolts. You use
either studs and nuts into them, or bolts. If bolts, you could just
replace them when the device is removed. That would stop the threads
getting full of crap. You might need different length bolts if whatever
you're fixing is thick, though.

You can also remove Rawlbolts complete by tapping the bolt inwards while
slack - that will push the wedge back allowing the whole lot to be
removed. And they're cheap. ;-)

--
*Never miss a good chance to shut up *

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Adrian wrote:
That's a hell of a trip hazard?

Four bolt heads sitting just proud of the floor?

They needn't even be proud - if you use a spacer (some washers?) between
the bolt and housing when first fitting. Remove the spacer and the bolt
head could be flush with the concrete.

--
*There are 3 kinds of people: those who can count & those who can't.

Dave Plowman London SW
To e-mail, change noise into sound.

On Sat, 24 Jan 2015 17:07:02 +0000, Dave Plowman (News) wrote:

That's a hell of a trip hazard?

Four bolt heads sitting just proud of the floor?

They needn't even be proud - if you use a spacer (some washers?) between
the bolt and housing when first fitting. Remove the spacer and the bolt
head could be flush with the concrete.

Good idea.

On Sat, 24 Jan 2015 17:04:04 +0000, Dave Plowman (News) wrote:

Assuming the concrete is reasonably thick

7"+, depending on which bit of the garage. There's a two-post lift going
in there, and the floor's intended to take that.

In article , Lobster
writes
On 24 Jan 2015, fred grunted:

A final alternative is a resin socket (the opposite of a resin stud):

http://www.tooled-up.com/microcat/in...-sockets/3541/

Blimey, never heard of those. I can think of several times in the past
where it would have been really good to haved use those in place of resin
studs!

I don't think they've really reached the mainstream yet but the prices
have definitely come down, particularly those on Tim's link.

With the length of the M8s being in the 75-80mm range I can see them as
being useful to mount heavy stuff like plasmas securely on dot & dab
walls, 2" in the wall and the rest coming flush to the outside of the
boards.

That plus anything that needs to be easily dismountable and leave a
clean finish. Frame fixings on steroids.

--
fred
it's a ba-na-na . . . .

On 24/01/2015 17:07, Dave Plowman (News) wrote:
In ,
wrote:
That's a hell of a trip hazard?

Four bolt heads sitting just proud of the floor?

They needn't even be proud - if you use a spacer (some washers?) between
the bolt and housing when first fitting. Remove the spacer and the bolt
head could be flush with the concrete.


Or, how about this . . .

Use a steel plate (say 3" square) at each fixing position, and
permanently set it into the concrete so that the top is flush with the
floor. Use resin sockets in the floor - set down by the thickness of the
plates. Drill a countersunk hole in the centre of each plate, in line
with the socket. Use ordinary set bolts to hold the machine down and,
when the machine isn't in place, use countersunk set screws to fill the
holes. There will then be no trip hazard and no risk of crud getting in
the bolt holes.
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

"Adrian" wrote in message
...
On Sat, 24 Jan 2015 17:04:04 +0000, Dave Plowman (News) wrote:

Assuming the concrete is reasonably thick

7"+, depending on which bit of the garage. There's a two-post lift going
in there, and the floor's intended to take that.


And rawlbolts hold my brothers two-post lift in place (with a little help
from gravity)

--
Adam

"Dave Plowman (News)" wrote in message
...

Assuming the concrete is reasonably thick, I'd just use Rawlbolts.

+1. I used them in the garage when I had a Norton flypress bolted down and
that got some serious welly on the handle when I was pressing gudgeon pins
out of old pistons. Holding a tyre changer down isn't going to phase them in
the slightest and they're dead easy to remove.
--
Dave Baker