What i would like to do is screw some while aluminium (or steel or upvc) poles into concrete floor outside. I have seen before (not sure where), cases where the 'bolt' is embedded into the concrete, and the pole has a thread on the bottom so it can be screwed in, and taken out again quite simply. The poles should be about 1m long. They dont need to be a huge diameter.
Has anyone seen poles with a thread at the end (and matching bolt) Embedding the bolt should be ok as i will take up the affected concrete and put down new concrete with the bolt embedded in it. However, to make the pole strong the bolt would have to be quite long - best would be the length of the thread.
Hope thats clear ! Anyone with any ideas where i can locate this sort of thing, or any alternatives.
Thanks
Attaching steel poles to a concrete floor
Re: Attaching steel poles to a concrete floor
fft100,
Not quite sure of your loads etc but it sounds like you want to drill into existing concrete and have threaded holes available. Normally you would cast threaded ferrules with the concrete. I suggest you look at 'Loxins' by Ramset to do this job. Threaded rod projecting out of the loxins could allow you screw on your posts.
Notes below from Ramset. (No, I'm not their salesman, just an engineer.)
LOXIN
OVERVIEW
The LoxinTM anchor consists of two half shields that are pressed and held together by lugs which are recessed into the outer body. A tapered steel nut is held captive by a crimped over legs at the base of the steel, the anchor is passivated zinc plated to resist corrosion.
The LoxinTM is clearly stamped on the outer surfaces of the shield with the thread size of the tapered expander nut, as well as the diameter of the outer shield (hole size), as is the case with most masonry anchors, they are often referred to, even specified, by bolt size rather than outside diameter.
LoxinTM is almost a generic term and is often referred to as a method of fastening rather than a description of the product.
The hole size required to install a LoxinTM is considerably larger than all other masonry anchors. The rather large expander nut fitted into the bottom of the shield causes this.
Because of this fact, a greater degree of expansion is achieved when the bolt is tightened down into the nut.
The LoxinTM is suited to both solid and hollow masonry materials.
FEATURE BENEFITS
Flush setting No protrusions when not in use.
Female thread Bolts and threaded studs of any length or type can be used.
Shallow embedment Reduces chance of drilling into rebar, therefore faster drilling.
Captive expander nut Held in place at the extreme of the anchor length for maximum embedment.
USES
Where would I use a LoxinTM anchor?
Where I require a neat machine bolt head finish.
Where I require a neat flush finish to the work surface.
Where the fixture or machine is likely to be moved later.
To obtain a firm fastening into less dense masonry materials.
To fasten into hollow concrete masonry blocks.
As a general-purpose anchor that does not need any special setting tools.
Where the space between the bolt and the anchor inside diameter allows for some lateral movement for positioning.
INSTALLATION
Drill hole at recommended diameter and at least the depth of the anchor.
Remove debris by way of vacuum or hand pump, compressed air etc. Insert the LoxinTM nut end first until it is flush with the surface.
Insert the correct size bolt through the fixture into the LoxinTM and tighten.
NOTE: It is important to pre-expand each anchor in turn before installation of the fixture, this will avoid any movement of the anchor and/or the tapered expander nut after the fixture is in position.
Not quite sure of your loads etc but it sounds like you want to drill into existing concrete and have threaded holes available. Normally you would cast threaded ferrules with the concrete. I suggest you look at 'Loxins' by Ramset to do this job. Threaded rod projecting out of the loxins could allow you screw on your posts.
Notes below from Ramset. (No, I'm not their salesman, just an engineer.)
LOXIN
OVERVIEW
The LoxinTM anchor consists of two half shields that are pressed and held together by lugs which are recessed into the outer body. A tapered steel nut is held captive by a crimped over legs at the base of the steel, the anchor is passivated zinc plated to resist corrosion.
The LoxinTM is clearly stamped on the outer surfaces of the shield with the thread size of the tapered expander nut, as well as the diameter of the outer shield (hole size), as is the case with most masonry anchors, they are often referred to, even specified, by bolt size rather than outside diameter.
LoxinTM is almost a generic term and is often referred to as a method of fastening rather than a description of the product.
The hole size required to install a LoxinTM is considerably larger than all other masonry anchors. The rather large expander nut fitted into the bottom of the shield causes this.
Because of this fact, a greater degree of expansion is achieved when the bolt is tightened down into the nut.
The LoxinTM is suited to both solid and hollow masonry materials.
FEATURE BENEFITS
Flush setting No protrusions when not in use.
Female thread Bolts and threaded studs of any length or type can be used.
Shallow embedment Reduces chance of drilling into rebar, therefore faster drilling.
Captive expander nut Held in place at the extreme of the anchor length for maximum embedment.
USES
Where would I use a LoxinTM anchor?
Where I require a neat machine bolt head finish.
Where I require a neat flush finish to the work surface.
Where the fixture or machine is likely to be moved later.
To obtain a firm fastening into less dense masonry materials.
To fasten into hollow concrete masonry blocks.
As a general-purpose anchor that does not need any special setting tools.
Where the space between the bolt and the anchor inside diameter allows for some lateral movement for positioning.
INSTALLATION
Drill hole at recommended diameter and at least the depth of the anchor.
Remove debris by way of vacuum or hand pump, compressed air etc. Insert the LoxinTM nut end first until it is flush with the surface.
Insert the correct size bolt through the fixture into the LoxinTM and tighten.
NOTE: It is important to pre-expand each anchor in turn before installation of the fixture, this will avoid any movement of the anchor and/or the tapered expander nut after the fixture is in position.
Re: Attaching steel poles to a concrete floor
You can make this simple or complex depending on how you want the floor to be when the posts are removed and the tools you have available
Simplist is just to cast some sockets in the floor using a length of plastic or steel tube and drop the posts in. Posts can be steel, ali, plastic, wood etc, no welding or tapping of threads etc required
Drill and put in chemical anchor bolts with projecting studs. Posts steel or ali will require a welded base plate with tapped hole or welded nut to suit projecting stud. Plastic post will be much weaker and harder to make a good/strong connection.
Drill and fit LoxinTM or similar captive device. Posts steel or ali will require a welded base plate with tapped hole or welded nut and threaded stud bar to suit . Plastic post will require full length stud bar and drilled top plate and nut to clamp post down.
If you have a small fab shop near to you you can get them to make very simple posts out of square, angle bar or tubulars very cheaply. Else buy some thick wall plastic pipe and cast some sockets this makes it a much easyer DIY job and posts are easily drilled for attaching chain or rope etc.
Simplist is just to cast some sockets in the floor using a length of plastic or steel tube and drop the posts in. Posts can be steel, ali, plastic, wood etc, no welding or tapping of threads etc required
Drill and put in chemical anchor bolts with projecting studs. Posts steel or ali will require a welded base plate with tapped hole or welded nut to suit projecting stud. Plastic post will be much weaker and harder to make a good/strong connection.
Drill and fit LoxinTM or similar captive device. Posts steel or ali will require a welded base plate with tapped hole or welded nut and threaded stud bar to suit . Plastic post will require full length stud bar and drilled top plate and nut to clamp post down.
If you have a small fab shop near to you you can get them to make very simple posts out of square, angle bar or tubulars very cheaply. Else buy some thick wall plastic pipe and cast some sockets this makes it a much easyer DIY job and posts are easily drilled for attaching chain or rope etc.
Re: Attaching steel poles to a concrete floor
Thanks.
Thats certainly helped point me in the right direction. If i have it right, i just have to find the Loxins now - hopefully Homepro or similar, and some poles with the right size thread on the bottom. It will be for a simple fence around a pool using that flexible green plastic chicken wire type fencing. Wont keep out a determined child, but will hopefully stop an accidental fall/trip.
Thats certainly helped point me in the right direction. If i have it right, i just have to find the Loxins now - hopefully Homepro or similar, and some poles with the right size thread on the bottom. It will be for a simple fence around a pool using that flexible green plastic chicken wire type fencing. Wont keep out a determined child, but will hopefully stop an accidental fall/trip.
Re: Attaching steel poles to a concrete floor
I presume that you want this as a temporary fence?
Why not weight the posts to the ground( post cast in a bucket with concrete is an easy method) - this will be as least as strong as the plastic fence and removable without leaving sockets in the ground to stub toes on.
If permanent and as you are removing concrete why not concrete the posts in?
I have found looking on the internet at engineering products and then trying to obtain them in somewhere like Homepro is usually a no go.
Why not weight the posts to the ground( post cast in a bucket with concrete is an easy method) - this will be as least as strong as the plastic fence and removable without leaving sockets in the ground to stub toes on.
If permanent and as you are removing concrete why not concrete the posts in?
I have found looking on the internet at engineering products and then trying to obtain them in somewhere like Homepro is usually a no go.
no more dePreston
Re: Attaching steel poles to a concrete floor
You could perhaps try asking at one of those shops that make welded steel fences and gates that you see around the town.
They might be able to make you some light lengths of fence that were removable by being dropped into sockets or whatever. As long as you can communicate exactly what you want, some of these Thai companies can be pretty good at finding ways of doing things.
They might be able to make you some light lengths of fence that were removable by being dropped into sockets or whatever. As long as you can communicate exactly what you want, some of these Thai companies can be pretty good at finding ways of doing things.
Re: Attaching steel poles to a concrete floor
I don't think you will find posts with a matching thread off the shelf they will have to be fabricated
Stud bar (round bar completely threaded) is relatively cheap you could just buy 24mm stud bar and cut to length and hang the fence netting on this but the cast in fittings (LoxinTM) will be more expensive due to the size.
Remember any exposed threads on the LoxinTM when not in use will need protecting
You could just buy round bar Or re-bar and hire a Hilti and just drill holes 1 or 2mm oversize to suit and drop the bars in and attach the fencing using clips this would be a lot easier and cheaper for a temporary fence
Stud bar (round bar completely threaded) is relatively cheap you could just buy 24mm stud bar and cut to length and hang the fence netting on this but the cast in fittings (LoxinTM) will be more expensive due to the size.
Remember any exposed threads on the LoxinTM when not in use will need protecting
You could just buy round bar Or re-bar and hire a Hilti and just drill holes 1 or 2mm oversize to suit and drop the bars in and attach the fencing using clips this would be a lot easier and cheaper for a temporary fence