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Old 05-17-2013, 12:32 AM   #16
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Slab for brick column.. What would you do?


you'd have to excavate to determine where your good undisturbed soil is located. I'd say probably a couple of feet. you want part of the column below grade with your footing. This way the back fill will help to stablize the column. the larger the footing the more stable it will be. stop and think, if you try and push down on one side of the footing the dirt on top of the other side will help to resist that movement. you'll need steel reinforcing that extends from the footing pad up into the column to tie it all together. hopefully your mason is knowledgeable about building columns. Have you asked them if they've done this before and went to see their work? I would .....

yes the top of the footing should be below the surface of the ground. if you excavate two feet of fill and your footing is 12" that would leave 12" of fill on top. do not tie your walkway to the footing or columns.

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Old 05-17-2013, 08:13 AM   #17
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Slab for brick column.. What would you do?


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Wow! Thanks for all the great info!

It makes sense to me when you say go under the current slab with the footing.

I'm I understanding you correctly: the finished height of the footer should be "below grade"? For example the surface of the footer should meet approximately the base of the current slab?

The first run of bricks will be below grade?
The finished height of a non-basement house footer is well underground, right? At least 12". The first three runs of brick below ground.
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Old 05-18-2013, 07:24 AM   #18
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Slab for brick column.. What would you do?


You can leave the first few bricks below grade, just make sure the weeps are above grade (assuming the mason is using them). You'll want at least 6" of ground over the footing to plant grass flowers, etc... and get them to grow.
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Old 05-18-2013, 07:57 AM   #19
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Slab for brick column.. What would you do?


if i were doing that =

5' deep x at least 2' hole. NO sono-tubes ! just a hole. fill it with concrete. and have rebar coming up at least 2' above grade.

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Old 05-21-2013, 09:40 PM   #20
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Slab for brick column.. What would you do?


Thanks for all the advice everyone.

I got the footers done over the weekend. I went close to 36"x36" and almost 24" deep with some 5/8 rebar in there. I stopped a few inches from the surface so about two courses of brick will be below grade.

I decided not to do the extra rebar running vertical to support any filling as this will be a hollow column. The gate I mentioned will not be attached to the columns, it will have it's own metal hardware and supports separate from the brick.

If all goes well bricking will happen towards end of week.
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Old 05-21-2013, 10:21 PM   #21
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Slab for brick column.. What would you do?


post some photos when you're done please
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Old 05-25-2013, 08:58 PM   #22
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Slab for brick column.. What would you do?


I am getting ready to build 3 bricks columns on my 4inch concrete patio. I would like to know will the 4inch concrete hold up the brick colums?
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Old 05-25-2013, 09:34 PM   #23
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Slab for brick column.. What would you do?


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I am getting ready to build 3 bricks columns on my 4inch concrete patio. I would like to know will the 4inch concrete hold up the brick colums?
Do the little 4" bricks (with no steel in them) hold up all the bricks above them? What a load on that first bottom row of bricks!

The trouble comes when you plan to simply build a column on the edge of that slab. The object and function of a pad is just like your own feet... to spread the load of the weight of the body. Spread it out some so the column doesn't exert all its pressure straight down below it. (Imagine walking on just 3" diameter stubs at the ends of your legs.) The concrete in the pad doesn't give way...... the ground below it does, IF the weight is not spread out some... in ALL directions.

"But I'm putting the columns out in the center of the slab... That's certainly spreading the weight out." Think about it. There is a reason you are required to dig the bottom of a footing down to "undisturbed" soil. That is because dirt settles. And that dirt way down in there has been settling for decades. It's packed good. Solid! Not so for the layer of dirt just below your 4" slab. Sure, "compacting" it helped some. But compacting is not all that effective.... especially not the way it is done by the sobered-up drunk they hired to run the little "shaker machine" for a few minutes.
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Old 05-29-2013, 08:06 PM   #24
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Slab for brick column.. What would you do?


Ok GB here they are so far.

I had the mason leave the top off for now. I want to run some electrical incase I want to light them in the future.

I'm thinking I might have them re-do the top two courses. I'm not in love with the sliver cuts they did. But the columns are true and solid.

The distance between the two columns is 66 inches. I'm struggling with what to do about the gate situation that will be between the columns. I'm having that built to my specs, but not sure if I want a monstrous 5 foot gate. Thoughts?
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Old 05-29-2013, 08:16 PM   #25
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Slab for brick column.. What would you do?


looks good!

do a double gate, less weight on each set of hinges. could have a pin (into sidewalk) so that one side opens and the other stays fixed unless you pull up the pin.

of course if I was hanging metal gates off the columns I'd have concrete in the void area to anchor the hinges into
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Old 05-29-2013, 08:57 PM   #26
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Slab for brick column.. What would you do?


I kind of ruled out a double gate bc. I think it might be less secure than a single...


I'm leaning towards a 2 foot fence piece then 3 foot gate. Between the 2 foot piece and the gate will be a static post (bolted to walk). Not sure how that would look, but it would cut down the overall width.


Btw. I'm not planning on hanging the gate directly to the columns. I didn't mention this earlier (I wanted to avoid being lambasted), but I allowed space for steel gate posts when I built the footers. I cut the slab (covered by wood in and brick in photo) and put a 8" tube and poured the footer around so I can install the steel posts later. I didn't want the posts in the way of the masonry.
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Old 05-29-2013, 10:20 PM   #27
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Slab for brick column.. What would you do?


A 2 foot fence is "security"?
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Old 05-29-2013, 10:29 PM   #28
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Slab for brick column.. What would you do?


2 foot wide. Hard to explain. I'll sketch it out and post it up later.

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