Anchor pot

[jrhaines2]

I am going to have a 2000lb overhead crane in my garage and from time to time I need to straighten out bent items such as farm machinery and such.

I would like to have an anchor in the floor so I might use my crane to straighten out items attached to the anchor.

I am going to have a 5' slab with in floor heat,is there a reasonable way to prepare the concrete to expect a 2000 lb pull on it?

 

[koditten]

My last shop I used 4" I beam chunks lying on their sides. Concrete flowed in between the flanges. This left me with a flat 4" plate. I wanted a flat floor, so I would just weld a chain hook to the plate when I needed to make any pulls. When I was done I just cut off the hooks and ground flat. Back to a perfectly smooth floor. If you don't do welding, this might not work for you. I stalled the hydraulic rams plent and saw no concrete cracks.

I forgot all about putting those in my new shop. Not happy about that.

 

[wssix99]

You can't make a slab able to withstand that kind of uplift, but you can put the anchor under the slab. (Particularly if its going to be radiant.)

I'd think the easiest way to do it would be to pour an anchor under the floor with your attachment sticking above the future level of the floor and then pouring the floor around that. You'll need an anchor of 1/2 cubic yard of concrete, which weighs one ton.

Maybe you could put an aircraft anchor in a small pier and then route your radiant lines around the pier? Here are some ones I like: http://www.pacificmarine.net/airtiedown.htm (The strengths here are not for uplift. You would probably need to weld these to another steel piece to get down to the anchor mass and reinforce the anchor so it doesn't break apart under load.

 

[wssix99]

You can't make a slab able to withstand that kind of uplift, but you can put the anchor under the slab. (Particularly if its going to be radiant.)

I'd think the easiest way to do it would be to pour an anchor under the floor with your attachment sticking above the future level of the floor and then pouring the floor around that. You'll need an anchor of 1/2 cubic yard of concrete, which weighs one ton.

Maybe you could put an aircraft anchor in a small pier and then route your radiant lines around the pier? Here are some ones I like: http://www.pacificmarine.net/airtiedown.htm (The strengths here are not for uplift. You would probably need to weld these to another steel piece to get down to the anchor mass and reinforce the anchor so it doesn't break apart under load.

 

[sfckiddo]

its a pain but i made my own. i used pipe with a chain anchored around it. before i poured the slab i went 6 in deeper than the bottom of the floorand put in a pipe framework and rebar over it. the chains go up through a pipe saddled to the framework and coil 4 or 5 links inside so you have a flush floor. covered the tops with duct tape when i poured the concrete. i have them in a 16x30 bay, 3 across each end and on on each side in the middle. if you need to pull where you don't have an anchor simply connect 2 together with a chain and pull from anywhere in your frame pattern. this way you are not pulling from any one place it would have to pull up a lot of floor before it came out.

 

[79firebird]

jrhaines2 for that kind of pull i would say let it cure for atleast a year. at my work we have a 5 inch slab no rebar or any thing in it drilled the holes put our pots in and only ever had 2 pull out wich isent to bad. That was on a 5ton truck frame with a 10 ton puller doing a downword pull.