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Concrete Anchors

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matt_i

Well-known member
Joined
Mar 14, 2008
Messages
10,726
Location
SE Michigan
I'd go with a size that closely fits the baseplate/footplate on your lift, 6" deep. If you epoxy the anchors the critical step involves ID brushing and blowing the holes out with a pencil-sized air gun which will reach to the bottom of the hole, until no more dust can be detected exiting.
 

NewLogik

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Joined
Sep 21, 2010
Messages
191
Location
Repentigny, QC, Canada
Which model of post lift you intend to install ? Usually, you will use 3/4" x 5"1/2 or so concrete anchors, but the requirement might be different depending on which 2 posts lift you install. You then follow the instructions to tighten to the correct torque.

When installing my 2-post list I drilled the 3/4" holes to the appropriate depth as stated for the fasteners I used. What I made sure was to remove any and all drill dust after I met the required depth. Make sure the hole is clear of all debris. I was able to easily attain the *** lb/ft torque as stated in the anchors instructions and still be well within the max stud stick-out height specified above the slab.

So, there's a lot of other things to consider regarding the installation, like the slab thickness, strength, etc...

As always, contacting the lift maker is the best answer to such a question.

If I can help answers other questions, let me know.
 

Pwrgeek

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Joined
Oct 18, 2015
Messages
288
Location
Texas USA
Mine is down using 3/4 X 4" redheads per manufacturers instruction. There are about 8 per side so it's not going anywhere. I did deviate a bit in that the middle bolt on the back of each post I set a 3/4 J bolt in the slab tied to the rebar. That one bolt will hold each side by itself many times over so I'm really not worried.


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Pwrgeek

Well-known member
Joined
Oct 18, 2015
Messages
288
Location
Texas USA
A cantilevered bench is not going to experience any uplift on the base member. Use a couple of 1/4 tapcons to keep it from moving around and you'll be good. The issue to be concerned with is properly anchoring it to the wall. You have to remember that with a cantilever for every pound of weight you put on it there is going to be a resultant pound of weight trying to pull it away from the wall.


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matt_i

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Mar 14, 2008
Messages
10,726
Location
SE Michigan
I don't want to use 1/2" anchors.

Any standard workbench in standard depth concrete, is probably well served by 3/8" wedge (stud) anchors. My free advice is to drill all the way thru the slab so if you get tired of it you can simply hammer the anchor down flush rather than having to get out a cutoff disk and sling hot metal all over the place.
 
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wrench409

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Joined
Oct 14, 2006
Messages
2,559
Location
Over here....
Plenty of other guys here have built this type of bench. I am not a babe in the woods. I've built many standard type benches but in this case I don't want a four legged behemoth and am looking to build it differently.

My question was simply what size and depth of post anchors are used on lifts so as to consider what size and type to use should I continue with the build.

If it falls off the wall when I lay a wrench on it, I'll post pictures.

Sheesh.
 

ddawg16

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Joined
Jul 11, 2008
Messages
21,005
Location
S. California
My workbench's do not touch the floor at all.

I have a 'ledger' board bolted to the wall.....1/4" lag bolts anchored about 4" into a 2x6. I made the ends out of 3/4 plywood. Essentially, a big box. It is not going anywhere.
 
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